## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work
> - Adapter utilities transfer files between the host and an agent
environment
> - A sandbox target already provides the security boundary for inbound
files
> - The generic fallback adds a temporary file and a rename that do not
add protection inside that boundary
> - This pull request writes a mode-constrained inbound file directly to
its target and applies the mode after the write
> - The benefit is a simpler transfer path while host targets keep the
strict pre-write mode rule
## Linked Issues or Issue Description
**What existing behavior does this improve?**
The inbound file-sync fallback for a mode-constrained file stages the
file under a temporary name, applies the mode, and renames the file into
place.
**Subsystem affected**
`packages/adapter-utils` and `packages/plugins`.
**Current behavior**
A sandbox target uses a temporary path before it receives the file. The
host then changes the mode and renames the file to the target path.
**Proposed behavior**
A sandbox target receives the file at its target path. The host applies
the mode after the write. A host target still applies the mode before
the first byte.
**Reason and benefit**
The sandbox boundary already protects the target. The direct write
removes an unnecessary staging path and rename.
**Breaking changes**
None. The directory path and outbound transfer path keep their existing
behavior.
## What Changed
- Write a mode-constrained single-file inbound transfer directly to the
sandbox target.
- Apply the mode after the direct write and keep the confinement check
before post-upload commands.
- Scope the protocol comment by transfer direction and preserve the
strict host-target rule.
- Keep directory inbound transfers and outbound transfers unchanged.
## Verification
- Run the targeted unit suite for the changed package.
- Verify the suite covers direct target writes, post-write mode
application, and confinement rejection.
- Run `tsc --noEmit` for both changed packages.
- Review the full GitHub Actions check set after the PR opens.
## Risks
- A sandbox provider that assumes a temporary inbound path could expose
a behavior mismatch.
- The confinement check remains before post-upload commands, which
limits escape risk.
- Host targets keep the pre-write mode rule, so host permission behavior
does not change.
## Model Used
OpenAI GPT-5. This model assisted with Git operations, PR preparation,
review coordination, and tool use. Context window size and reasoning
mode are not exposed by the runtime.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work.
> - Sandbox adapters stage project files before an agent starts.
> - Referenced projects ignored Git-ignored paths and copied large local
directories.
> - This behavior increased staging time and disk use, and it differed
from anchor workspaces.
> - This pull request resolves Git-ignored paths once and shares that
result across all referenced-project consumers.
> - The benefit is smaller, faster, and consistent project staging.
## Linked Issues or Issue Description
No public GitHub issue exists for this bug.
**What happened?**
Referenced-project staging copied Git-ignored paths, except for a fixed
list of heavy directory names. A large repository therefore used much
more time and disk space than the same repository in an anchor
workspace.
**Expected behavior**
Referenced-project staging should exclude the same Git-ignored paths
that the workspace staging path excludes.
**Steps to reproduce**
1. Create a referenced project with a large Git-ignored directory.
2. Start a sandbox or SSH run that stages the referenced project.
3. Observe that the ignored directory enters the staged content.
**Paperclip version or commit**
Commit `9964b034bbff24e700c8eccf5a8b1fc3daa44bf2`.
**Deployment mode**
Built from source.
## What Changed
- Resolve each referenced project's Git-ignored paths once before
staging.
- Carry the resolved paths as a required field on
`SandboxAdditionalSource`.
- Reuse the resolved paths in sandbox staging, SSH staging, and
content-signature code.
- Harden the read-only Git helper with a bounded process, a reduced
environment, and disabled system and global configuration.
- Fail closed on Git errors, timeouts, and invalid path relations.
- Escape tar glob metacharacters in ignore-derived exclude entries.
- Add and update unit tests for the resolver and its three consumers.
## Verification
- `pnpm vitest run --config packages/adapter-utils/vitest.config.ts`
passes 266 tests locally.
- `pnpm exec tsc --noEmit -p packages/adapter-utils/tsconfig.json`
passes locally.
- CI must pass on this pull request.
- Greptile must report 5/5 with no unresolved comments before merge.
## Risks
- A Git error or timeout now prevents staging for the affected
referenced project.
- The resolver uses a bounded read-only Git process and fails closed by
design.
- The change stays inside `packages/adapter-utils` and does not change
the database schema.
## Model Used
Claude Sonnet 5 (Anthropic) assisted the implementation with code
execution and tool use. The exact context window and reasoning mode are
not recorded.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` /
`Closes: #` / `Refs: #` OR (b) described the issue in-PR following the
relevant issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work
> - Sandbox providers carry agent work through controlled execution
channels
> - The Daytona callback bridge uses a bespoke line-framed protocol over
its duplex channel
> - The bespoke protocol adds framing work and does not use the Node
transport that already supports multiplexed streams
> - This pull request carries raw bytes across the channel, adds a Node
HTTP/2 bridge, and selects it for Daytona
> - The benefit is one authenticated, multiplexed callback session with
queue_v1 as the bounded fallback
## Linked Issues or Issue Description
**Subsystem affected**
The packages/plugins Daytona provider and the shared duplex execution
path.
**Problem or motivation**
The Daytona callback bridge uses a bespoke line-framed protocol over the
provider duplex channel. This adds protocol work and limits stream
handling.
**Proposed solution**
Carry raw bytes through the cross-layer channel. Add an authenticated
Node HTTP/2 host server and sandbox client gateway. Select http2_v1 for
Daytona and retain queue_v1 as the fallback.
**Alternatives considered**
Keep the current duplex_v1 protocol. This keeps the bespoke framing path
and does not provide one HTTP/2 session for callback streams.
**Roadmap alignment**
ROADMAP.md lists Daytona under cloud and sandbox agents. This change
improves the shipped Daytona provider path.
**Additional context**
The branch adds no dependency. Node 24 provides the http2 module. The
host token check and canonical path parser remain the single dispatch
path.
## What Changed
- Carry raw Uint8Array chunks through the adapter, plugin, worker,
runtime, and Daytona layers.
- Encode bytes as base64 only across the JSON-RPC hop, because JSON has
no binary type.
- Add the bounded host HTTP/2 server and the in-sandbox HTTP/2 client
gateway.
- Authenticate every stream with the per-run bridge token before route
work.
- Parse the path once and reuse the canonical result for route and
forwarding work.
- Select http2_v1 for Daytona and fall back once to queue_v1 when the
client preface is absent.
- Add transport, session, stream, and fallback telemetry.
- Mark HTTP/2 as the preferred transport and queue_v1 as the
soft-deprecated fallback.
## Verification
- `npx vitest run packages/adapter-utils/src` — 990 passed and 4
skipped.
- `npx vitest run
server/src/__tests__/plugin-worker-manager-duplex.test.ts` — 32 passed.
- `npx vitest run --config
packages/plugins/sandbox-providers/daytona/vitest.config.ts` — 220
passed and 6 skipped.
- `npx tsc --noEmit` in `packages/adapter-utils`, `packages/shared`,
`packages/plugins/sdk`, and `server` — clean.
- No `package.json` or `pnpm-lock.yaml` file changed.
- The live Daytona test skips when `DAYTONA_API_KEY` is absent.
- The root `npx tsc --noEmit` command has a pre-existing missing
`packages/adapters/droid-local` reference on this branch and on
`master`.
## Risks
- The transport change affects several duplex layers and could expose
byte-boundary errors.
- A missing HTTP/2 client preface falls back once to queue_v1 and
records `preface_missing`.
- The host token check and canonical path parser must remain on the
shared dispatch path.
- The live Daytona test needs `DAYTONA_API_KEY` and does not run in this
agent sandbox.
## Model Used
OpenAI GPT-5, tool-enabled coding agent with repository inspection,
GitHub CLI, and shell execution.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip runs AI agents through local and remote execution
adapters.
> - Sandbox providers move workspace and asset files before and after
agent runs.
> - Serial file transfers delay startup and teardown when several
operations do not depend on each other.
> - Providers need an opt-in contract so existing providers keep their
serial behavior.
> - This pull request adds a bounded scheduler and routes inbound and
outbound sync operations through it.
> - The benefit is shorter sandbox setup and teardown with stable
errors, clear telemetry, and a safe opt-in path.
## Linked Issues or Issue Description
**Subsystem affected**
Cross-cutting (multiple of the above): packages/shared,
packages/adapter-utils, packages/plugins, and server.
**Problem or motivation**
Sandbox sync processes the workspace, assets, and referenced projects in
series. This adds avoidable wait time to agent startup and teardown.
**Proposed solution**
Add a fail-closed provider capability named concurrentSyncOperations.
Use a bounded scheduler with a limit of four operations. Preserve
operation order for error reporting. Keep non-opted-in providers on the
serial path.
**Alternatives considered**
Increase the serial transfer speed or add provider-specific schedulers.
Those options do not provide one shared contract or stable behavior
across providers.
**Roadmap alignment**
ROADMAP.md lists cloud and sandbox agents as a product area. This change
improves sandbox execution without changing the control-plane contract.
**Additional context**
The Daytona provider opts in. Board trials on this commit showed overlap
for inbound sync and outbound restore, with no referenced-project
staging failures.
## What Changed
- Add the concurrentSyncOperations sandbox capability and fail-closed
parsing.
- Add a bounded settle-all scheduler with stable input-order errors.
- Parallelize inbound workspace, asset, and referenced-project sync
operations when the provider opts in.
- Parallelize outbound workspace and asset restore operations when the
provider opts in.
- Surface referenced-project failure text in run logs and server
telemetry.
- Add Daytona sync spans and the capability declaration.
- Preserve in-flight upload scratch tarballs during workspace wipe.
- Add unit and regression tests for the scheduler, coordinators,
provider behavior, telemetry, and wipe race.
## Verification
- Run the adapter-utils and server type checks.
- Run the targeted adapter-utils, server, and Daytona test suites.
- Run the full automated sweep.
- Review six cold Daytona trials, with three serial and three parallel
runs.
- Confirm that parallel trials show inbound overlap and outbound restore
overlap.
- Confirm that providers without the capability keep serial behavior.
## Risks
- Providers must opt in only when their file operations can run safely
at the same time.
- A provider that declares the capability incorrectly can expose
transfer races.
- The scheduler keeps a limit of four to bound resource use.
- Providers without the capability keep the prior serial behavior.
## Model Used
OpenAI GPT-5 in the Codex runtime. The model used tool calls, code
inspection, and GitHub workflow support. The model did not author the
implementation commits.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with Fixes: # / Closes #
/ Refs # OR (b) described the issue in-PR following the relevant issue
template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub #NNN / github.com/paperclipai/paperclip URLs)
- [x] My branch name describes the change and contains no internal
Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work
> - Runs can reference more than one project
> - Each referenced project must land in its own sandbox tree so one run
does not mix files across projects
> - The anchor workspace must keep its own git history and overlay rules
> - Fail closed on sync and confinement errors, and keep the other
projects alive
> - This pull request stages referenced projects into isolated project
directories under the run sandbox root
> - The benefit is safer multi-project runs with clear failure isolation
## Linked Issues or Issue Description
No public issue exists.
Related PR: #10448.
## What Changed
- Thread additional referenced-project sources through the run prepare
path and the runtime layers.
- Stage each referenced project into its own `project-<projectId>`
directory under the runtime root.
- Keep the anchor workspace history and overlay semantics unchanged.
- Fail closed on confinement or sync errors for one project, and keep
the other projects running.
- Keep the path inert by default behind the multi-project workspace-sync
kill-switch.
- No documentation update was needed for this code-only runtime change.
## Verification
- `pnpm --filter @paperclipai/adapter-utils exec vitest run
src/sandbox-file-sync.test.ts src/command-managed-runtime.test.ts
src/sandbox-managed-runtime.test.ts src/remote-managed-runtime.test.ts`
- `pnpm --filter @paperclipai/adapter-utils exec tsc --noEmit`
- The branch points at `871378e4064a95adc8e4647e442ec1359768de61` on
`origin/feat/stage-referenced-projects-into-sandbox`.
- GitHub CI is green on PR #10469.
## Risks
- A referenced project can skip if confinement or sync fails.
- A new runtime tree layout can affect tools that assume one project
root.
- The kill-switch keeps the path inert until operators enable it.
## Model Used
OpenAI Codex, GPT-5, tool use enabled.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes or
confirmed no docs update was needed
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work
> - The sandbox exec path starts agent commands and passes runtime
options to the server and plugin layers
> - This path kept a noProfile flag after the exec wrappers stopped
sourcing a login profile
> - The flag no longer changed behavior, so it left dead API surface in
the protocol and runtime helpers
> - This pull request removes that dead flag from the plugin protocol,
the server drivers, and the managed-runtime helpers
> - It also updates the tests and points the agent runtime README at the
sandbox requirements file
> - The benefit is a smaller and clearer exec-path contract with no
behavior change
## Linked Issues or Issue Description
- No public GitHub issue exists.
### What happened?
The sandbox exec path kept a `noProfile` field after the exec wrappers
stopped sourcing a login profile.
### Expected behavior
The plugin protocol, server drivers, and managed-runtime helpers should
not expose or forward a dead field.
### Steps to reproduce
1. Run a managed-runtime command through the sandbox exec path.
2. Inspect the protocol payload and runtime helper inputs.
3. Observe that `noProfile` is present even though it no longer changes
behavior.
### Paperclip version or commit
`60c7da86fc7a6c1dbf37bbcd86e25ecaaff01607`
### Deployment mode
Built from source (pnpm dev / pnpm build)
### Additional context
This pull request removes the dead field, updates the affected tests,
and updates the README note for the sandbox profile path.
## What Changed
- Removed noProfile from the plugin protocol and the server exec-path
call sites.
- Updated the managed-runtime helpers to use the narrower exec-path
contract.
- Updated the affected tests and added the README pointer to
SANDBOX-REQUIREMENTS.md.
## Verification
- `git grep -n "noProfile" -- packages/ server/` returns zero matches.
- `tsc --noEmit` passed for `@paperclipai/adapter-utils`,
`@paperclipai/plugin-sdk`, and `@paperclipai/server`.
- `command-managed-runtime.test.ts` passed: 22/22.
- `environment-runtime.test.ts` passed: 24/24.
## Risks
- Low risk. The flag was already a no-op.
- A hidden external caller may still send the removed field.
## Model Used
- OpenAI GPT-5, tool-enabled.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` /
`Closes: #` / `Refs: #` OR (b) described the issue in-PR following the
relevant issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip is the control plane for autonomous AI companies
> - The Daytona adapter turns tasks into shell commands and manages
execution overhead
> - Many short-lived exec calls still pay for login-shell profile
sourcing even when the binary already resolves on the sandbox default
PATH
> - That extra startup work adds latency on the hot path for repeated
command execution
> - This pull request adds an opt-in fast path that skips profile
sourcing only when the caller explicitly requests it and the command
does not need shell initialization
> - The benefit is lower per-call latency for eligible commands without
changing the conservative default behavior for commands that need the
profile
## Linked Issues or Issue Description
This change does not reference a public GitHub issue. It follows the
same Daytona startup-speed work as merged PR #10335 and narrows the
execution path for eligible commands while keeping the default
login-shell behavior intact.
## What Changed
- Added an optional `noProfile` flag to
`PluginEnvironmentExecuteParams`.
- Refactored Daytona login-shell script assembly so the profile and nvm
sourcing block is omitted only on the explicit fast path.
- Preserved environment prefixing, `cd`, shell quoting,
`NONINTERACTIVE_GIT_ENV`, stdin handling, and `durationMs` behavior on
both paths.
- Added regression tests for the fast path omission, the preserved
execution parameters, and the default profile-sourcing path.
## Verification
- `pnpm --filter @paperclipai/sandbox-provider-daytona exec vitest run
src/plugin.test.ts`
- `pnpm --filter @paperclipai/plugin-sdk tsc --noEmit`
- Reverted the guard locally to confirm the two behavior tests fail
again, then restored the change.
## Risks
- If a caller opts into `noProfile` for a command that depends on shell
initialization, the command can fail to resolve its binary.
- The API comment and opt-in design keep that risk narrow; the default
path remains unchanged.
## Model Used
OpenAI GPT-5 (Codex tool-using coding agent)
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` /
`Closes: #` / `Refs: #` OR (b) described the issue in-PR following the
relevant issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work
> - The adapter/runtime layer has to move files into sandboxes safely
and efficiently
> - The current sync-in path needs a provider-delegable seam so
providers can use their native upload transport when available
> - The upload contract also needs ordered post-upload commands so
extracted content can be finalized fail-fast after transfer
> - The fallback path still has to preserve current behavior when the
provider does not expose native sync verbs
> - This pull request adds the contract and runtime seam for
provider-delegable sync-in, plus the single-stream collapse flag
> - The benefit is fewer round trips, a cleaner provider-owned upload
path, and a compatible fallback for existing runners
## Linked Issues or Issue Description
No public GitHub issue exists for this change. The underlying feature
request is described below in the repository's feature-request format.
### Problem or motivation
Paperclip needs a sync-in path that lets each provider choose the best
available upload transport instead of forcing the harness to orchestrate
uploads the same way every time. The runtime also needs a way to
describe ordered post-upload commands so providers can finalize
extracted content fail-fast after transfer.
### Proposed solution
Extend the sync contract with ordered post-upload commands, forward that
contract through the plugin and environment runtime layers, and make
client syncIn always available. When a provider advertises native sync
verbs, the client should delegate to that transport; otherwise it should
fall back to the existing tarball/write/extract behavior and then run
the post-upload commands in order.
### Alternatives considered
Keeping upload orchestration entirely host-side would avoid a contract
change, but it would block provider-specific transport optimizations and
keep the harness responsible for a path the provider can do more
efficiently. A separate post-upload API would add another surface
without improving the existing sync flow.
### Roadmap alignment
This work aligns with the broader runtime and adapter roadmap because it
improves provider integration without changing the external product
model. It is an additive contract change that preserves backward
compatibility for providers that do not expose native sync verbs.
### Additional context
The fallback path still needs to preserve existing observable behavior,
including command ordering, cwd confinement, and fail-fast execution.
The single-stream progress flag is part of the same transport
improvement so smaller writes can collapse to a single round trip when
the runner supports it.
## What Changed
- Added ordered `postUploadCommands` support to the sync operation
contract and SDK mirror.
- Plumbed the sync-in contract through the plugin and environment
runtime layers.
- Implemented a runtime client `syncIn` path that delegates to native
provider transport when available, otherwise uses the generic
tarball/write/extract fallback.
- Preserved fail-fast execution of ordered post-upload commands in the
fallback path.
- Flipped the sandbox runner's single-stream stdin progress flag to
collapse small `writeFile` operations to a single round trip.
- Added and updated tests for contract forwarding, fallback behavior,
cwd rejection, fail-fast behavior, and single-stream collapse.
## Verification
- `pnpm --filter @paperclipai/plugin-sdk exec vitest run
protocol.postupload.test.ts`
- `pnpm --filter @paperclipai/plugin-sdk exec vitest run
environment-sync-negotiation.test.ts`
- `pnpm --filter @paperclipai/adapter-utils exec vitest run
command-managed-runtime.test.ts`
- `pnpm --filter @paperclipai/server exec vitest run
environment-execution-target.test.ts`
- Local typecheck and targeted suite runs reported in the handoff passed
before PR creation.
## Risks
- The new fallback path could diverge from the previous inline upload
behavior if the tarball/extract contract changes.
- Provider-native sync handling may expose provider-specific edge cases
if a runner advertises sync verbs but does not fully honor the contract.
- The single-stream flag changes transport behavior for small uploads,
so regressions would likely show up as round-trip or upload failures.
## Model Used
OpenAI Codex (GPT-5, tool-using coding agent).
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` /
`Closes: #` / `Refs: #` OR (b) described the issue in-PR following the
relevant issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change and contains no internal
Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip is the control plane people use to coordinate AI agents
and their execution environments.
> - Environment realization decides where an agent runs and which
filesystem and toolchain are authoritative.
> - Copy-based realization is unsafe for container-anchored tasks
because absolute paths such as `/app` can point outside the synchronized
tree and task-specific binaries may be absent.
> - That mismatch can let an agent successfully verify work in a phantom
writable path while sync-back silently discards the result.
> - Existing task environments already provide the authoritative
filesystem and toolchain, so they should be executed in place rather
than copied.
> - Copy mode still needs explicit confinement rules so aliases target
the synchronized workspace and unsynchronized writable paths fail
visibly.
> - This pull request adds typed realization metadata, propagates the
authoritative root through orchestration, and teaches Codex to honor it.
> - The benefit is that container-anchored tasks operate on
verifier-visible state with the intended tools, while copy mode remains
safe and backward compatible.
## Linked Issues or Issue Description
No public GitHub issue exists for this defect.
GitHub duplicate searches for in-place execution, workspace realization,
and authoritative workspace roots found no related pull request to link.
### What happened?
Environment-backed agent runs were always realized through a copied
workspace. Tasks anchored to absolute container paths could therefore
write outside the synchronized tree, and task-provided toolchains were
unavailable in the copy. A run could report success even though
sync-back discarded its output.
### Expected behavior
Existing task environments should run against their real authoritative
root and toolchain. Copy-mode runs should map declared absolute aliases
into the synchronized tree and reject writable paths that cannot be
restored.
### Steps to reproduce
1. Run a Codex task environment whose required files live under `/app`
or `/workspace` and whose required binary exists only in the task
container.
2. Observe that copy realization changes the effective
filesystem/toolchain or permits writes outside the synchronized root.
3. Complete and verify the task inside the agent sandbox.
4. Observe that the verifier cannot see out-of-tree artifacts or that
task-specific commands were unavailable.
### Reproduction context
- Paperclip commit: `3a16b91217483d2c233926de5b7f7bc3a1077924`
- Deployment: built from source in a task-container execution
environment
- Adapter: Codex local
- Database: not database-related
- Access context: agent execution
## What Changed
- Added typed `copy | in_place` workspace-realization metadata,
authoritative roots, confined aliases, and outbound restore paths to
shared execution-target contracts.
- Selected in-place realization for existing task environments and
skipped archive prepare/restore when the authoritative environment is
used directly.
- Propagated the authoritative root into adapter context so Codex uses
it for cwd and `PAPERCLIP_WORKSPACE_*` semantics, including ACP
execution.
- Bound copy-mode aliases such as `/app` to the synchronized workspace
and rejected writable out-of-tree paths without explicit restore
mappings.
- Added focused regression coverage while preserving existing copy-mode
archive restore behavior.
## Verification
- `pnpm --filter @paperclipai/shared typecheck` — passed.
- `pnpm exec vitest run
packages/adapter-utils/src/local-process-sandbox.test.ts
packages/adapters/codex-local/src/server/acp.test.ts
packages/adapters/codex-local/src/server/execute.remote.test.ts
server/src/__tests__/environment-run-orchestrator.test.ts` — 48 passed,
4 skipped.
- `pnpm -r typecheck` — passed.
- `env -u AWS_ACCESS_KEY_ID -u AWS_SECRET_ACCESS_KEY -u
AWS_SESSION_TOKEN pnpm test:run` — passed across all general and
serialized Vitest shards.
- `pnpm build` — passed.
- Codex `k=1` acceptance run completed July 24, 2026 at 23:54:30 UTC
with 4 completed, 0 exceptions, and mean reward 1.0: `build-cython-ext`,
`openssl-selfsigned-cert`, `prove-plus-comm`, and `sqlite-db-truncate`
each received terminal grade 1.0 against real task-environment paths and
toolchains.
## Risks
- In-place mode deliberately exposes the authoritative task root to the
adapter; incorrect environment metadata could point execution at the
wrong root. Typed metadata and focused orchestration tests cover
selection and propagation.
- Copy-mode writable-path validation is stricter and may reject
previously accepted unsafe configurations. The rejection is intentional
and produces a visible error instead of silently losing output.
- The acceptance run is focused on four Codex task-environment
workloads, not a broad cross-adapter benchmark. Existing copy-mode
archive tests and the full repository suite remain green.
> For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and
discuss it in `#dev` before opening the PR. Feature PRs that overlap
with planned core work may need to be redirected — check the roadmap
first. See `CONTRIBUTING.md`.
## Model Used
- OpenAI Codex CLI coding agent; exact model ID and context-window size
were not exposed to this runtime. Capabilities used: extended reasoning,
repository editing, shell execution, test/build execution, Git, GitHub
CLI, and Paperclip API tool use.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip is an open-source AI-agent management platform; agents run
tasks inside sandboxed environments (Daytona, Kubernetes, E2B, etc.)
> - The control-plane ↔ sandbox file-transfer path flows through the
`environmentExecute` seam in `protocol.ts` — the only verb available to
plugins — which forces a base64-over-exec chunked loop for every file
move: workspace files, assets, Codex home sync
> - This transport is correct and safe, but it bypasses provider-native
bulk/streaming APIs (Daytona `uploadFiles`, K8s `FastUploadInterceptor`
/ volume mounts), leaving significant throughput on the table for large
workspaces
> - The right fix is an opt-in seam extension: providers with faster
native transfer declare two optional verbs; providers that do not opt in
stay on the existing fallback with zero code or behavior change required
> - This PR adds the first layer of that extension — two optional verbs
(`environmentSyncIn` / `environmentSyncOut`) in the plugin SDK, the
runtime plumbing to prefer the native path for the two clean
destroy-then-replace cases, and a doc for the contract
> - The core correctness invariant is byte-identical fallback: if no
provider opts in, execution is exactly what ships today;
`assertSyncOperationsConfined` enforces host-side path confinement for
providers that do opt in
> - No provider advertises the verbs yet → zero production behavior
change; future PRs wire up Daytona and K8s providers against this
contract
## Linked Issues or Issue Description
No public GitHub issue exists for this feature. Description follows the
`feature_request` issue template:
**Subsystem affected:**
packages/plugins — plugin system; packages/adapter-utils — adapter
runtime; server/ — EnvironmentRuntimeService
**Problem or motivation:**
Sandbox file transfers currently always use a base64-over-exec chunked
loop regardless of what the underlying provider supports. For workspaces
larger than a few MB this becomes the dominant wall-clock cost of every
sandbox run, and it bypasses bulk/stream APIs that providers like
Daytona already expose natively.
**Proposed solution:**
Add two optional, opt-in plugin hooks — `onEnvironmentSyncIn` /
`onEnvironmentSyncOut` — to the plugin SDK. When a provider defines both
hooks and both are advertised via the existing `supportedMethods`
negotiation, the runtime prefers the native path for the two clean
destroy-then-replace transfer cases; all other cases fall back to the
existing byte-identical base64 transport.
**Alternatives considered:**
An unconditional verb would require every provider to implement or stub
the verb. The opt-in / `METHOD_NOT_IMPLEMENTED` pattern (already used by
`environmentExecute`) preserves backward compatibility with zero
provider changes required.
**Roadmap alignment:**
Consistent with the ✅ "Cloud / Sandbox agents" and ✅ "Plugin system"
milestones; extends the plugin seam rather than adding
control-plane-level logic.
**Additional context:**
Searched open pull requests and issues for duplicate sandbox file-sync /
native-transfer work; none found.
## What Changed
- **`packages/plugins/sdk`**
- `protocol.ts`: two new optional `HostToWorkerMethods` —
`environmentSyncIn` / `environmentSyncOut` — plus generic
`SyncOperation`, `SyncFileMapping`, and `SyncOutcome` types
- `define-plugin.ts`: optional `onEnvironmentSyncIn` /
`onEnvironmentSyncOut` fields on `PluginDefinition`; worker advertises
each verb only when its hook is defined (else `METHOD_NOT_IMPLEMENTED`,
mirroring `environmentExecute`)
- `worker-rpc-host.ts`: route new verbs to plugin hooks
- `index.ts`: re-export new public types
- **`packages/adapter-utils`**
- `command-managed-runtime.ts`: expose optional `syncIn` / `syncOut` on
`CommandManagedRuntimeRunner` (available only when both verbs are
advertised); add `assertSyncOperationsConfined` host-side
path-confinement guard
- `sandbox-managed-runtime.ts`: `SandboxManagedRuntimeClient` gains
optional `syncIn` / `syncOut`; orchestrator prefers native path for
default-provision asset inbound and workspace-download-into-fresh-dir
outbound; all other paths keep the existing base64 fallback
- `sandbox-file-sync.test.ts` (new): 234-line characterization suite —
native-opt-in branch, fallback branch, `assertSyncOperationsConfined`
escape-path rejection, `followSymlinks` → tar `-h`
- `command-managed-runtime.test.ts`: negotiation + native-sync +
confinement tests
- **`server/src/services/environment-runtime.ts`**:
`EnvironmentRuntimeService` delegates to `syncIn` / `syncOut`, gated on
advertised support
- **`server/src/services/environment-execution-target.ts`**: minor
typing fix alongside the new verbs
- **`doc/plugins/SANDBOX_FILE_SYNC_HOOKS.md`** (new): documents the full
contract — opt-in / no-op guarantee, operation ordering,
provider-may-tar, atomicity, `followSymlinks`, secret modes (0600, no
window), path confinement, `operationId` opacity, resource bounds,
shell-quoting
## Verification
```bash
# SDK suite
pnpm --filter packages/plugins/sdk test
# Adapter-utils suite (includes new sandbox-file-sync characterization tests)
pnpm --filter packages/adapter-utils test
# Expected: 255 pass / 4 skip
# Type-check across affected packages
pnpm --filter packages/plugins/sdk typecheck
pnpm --filter packages/adapter-utils typecheck
# Server changed-file spot check:
cd server && npx tsc --noEmit --skipLibCheck 2>&1 | grep -E "environment-(runtime|execution-target)" | head -20
```
Key behavioral invariant to spot-check: with no provider opting in (the
current state), run any sandbox task and confirm file-transfer behavior
is byte-for-byte identical to what the pre-PR code produces. The
characterization tests assert this at the unit level.
## Risks
- **Zero production risk today**: no provider advertises
`environmentSyncIn` / `environmentSyncOut`, so the new code paths are
unreachable in production; all real traffic stays on the existing base64
fallback
- **Path confinement**: `assertSyncOperationsConfined` rejects any
`targetPath` that escapes the declared root — this is the primary
security boundary for future providers. The test suite covers
escape-path rejection
- **Atomicity**: the contract delegates atomicity to providers; the doc
explicitly calls out that directory-level ops are not guaranteed atomic
- **Secret transport**: credential assets (e.g., Codex `auth.json`,
directory mappings) continue to use the existing tar path — they do not
go through the new verbs in any current provider
> For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and
discuss it in `#dev` before opening the PR. Feature PRs that overlap
with planned core work may need to be redirected — check the roadmap
first. See `CONTRIBUTING.md`.
## Model Used
Provider: Anthropic
Model: `claude-sonnet-4-6` (Claude Sonnet 4.6)
Context window: 200 K tokens
Capabilities: extended tool use, multi-file code generation, agentic
reasoning via the Paperclip agent framework
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` /
`Closes: #` / `Refs: #` OR (b) described the issue in-PR following the
relevant issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Harold Kim <harold@paperclip.ing>
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work.
> - Agent adapters share managed-runtime helpers from
`@paperclipai/adapter-utils` so local and sandboxed runs can prepare,
execute, and restore workspaces consistently.
> - The sandbox managed runtime syncs workspaces in both directions by
creating tar archives on the local host and inside the remote sandbox.
> - A prior fix avoided archiving `.` during upload because tar
self-entries can force chmod/utime on a directory the command user does
not own.
> - The restore/download path still archived the remote workspace as
`.`, and failed managed commands only surfaced stderr.
> - This pull request applies entry-based tar creation to the sandbox
restore path and includes stdout in managed command failure diagnostics.
> - The benefit is that restore failures become visible to operators and
sandbox workspace restore avoids the same directory-metadata failure
class already fixed for upload.
## Linked Issues or Issue Description
No existing public issue found; describing in-PR (bug).
- **What happens:** sandbox workspace restore can fail while creating
`workspace-download.tar` from the remote workspace when the tar command
includes a `.` self-entry and the command user cannot update metadata on
the workspace directory. If the failing command writes its diagnostic to
stdout, the managed runtime error can collapse to a generic failed shell
command without the useful tar message.
- **Expected behavior:** restore should archive the workspace entries
without a `.` self-entry, and failed managed runtime commands should
include useful stdout/stderr diagnostics.
- **Where:** `packages/adapter-utils/src/sandbox-managed-runtime.ts`
restore/download path and
`packages/adapter-utils/src/command-managed-runtime.ts` command error
formatting.
- **Related public context:** #7836 fixed the upload side of the same
tar self-entry failure class.
## What Changed
- Added stdout-aware failed-command formatting in the command managed
runtime, keeping diagnostics bounded to the tail of stdout/stderr.
- Added remote workspace tarball creation that names top-level entries
explicitly instead of archiving `.` during sandbox restore.
- Preserved empty-workspace restore support by creating a valid empty
tarball when the remote workspace has no entries.
- Added regression coverage for stdout diagnostics, restore tar members,
and empty workspace restore tarballs.
## Verification
- `pnpm vitest run
packages/adapter-utils/src/command-managed-runtime.test.ts
packages/adapter-utils/src/sandbox-managed-runtime.test.ts` — 2 files,
17 tests passed.
- `pnpm --filter @paperclipai/adapter-utils typecheck` — passed.
- `git diff --check origin/master..HEAD` — passed.
- Local public-hygiene/PII scan of the committed diff checked for
internal ticket refs, local/private URLs, common token/key patterns,
private-key blocks, and email-like values — passed.
- GitHub duplicate/related search found no public issue or PR for
`workspace-download.tar Permission denied` or `sandbox restore tar
permission denied`; #7836 is linked as related prior work.
- PR CI on commit `3ad4c8d` — all GitHub Actions lanes, security scans,
and aggregate `verify` passed.
- Greptile Review on commit `3ad4c8d` — Confidence Score 5/5; the prior
P2 thread is resolved with no open P2s, recommendations, or follow-ups.
## Risks
Low. This is limited to shared adapter runtime error formatting and
sandbox restore archive construction. Archive contents should remain
equivalent apart from the removed `.` self-entry, and the new
diagnostics are bounded to avoid dumping unbounded command output.
## Model Used
OpenAI Codex, GPT-5, tool-enabled coding agent with shell and GitHub CLI
access. Context window size was not reported by the runtime.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes (n/a;
internal adapter-runtime behavior only)
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work
> - Sandbox and SSH runtimes need to preserve agent work across isolated
execution environments
> - Git-backed workspaces were being copied mostly as filesystem
archives, which breaks when `.git` points outside the mounted workspace
and makes sandbox agents unable to publish their own branches
> - Large ignored dependency trees could also be swept into the sandbox
overlay, causing multi-GB transfers and max-string failures in some
sandbox clients
> - This pull request makes sandbox runtime setup use a git-backed HEAD
sync plus a small dirty/untracked overlay, and bounds sandbox file
transfers so large archives do not need one huge string
> - The benefit is that sandbox agents can commit and push from a usable
git checkout without uploading dependency trees such as `node_modules`
## Linked Issues or Issue Description
Refs #8395
No public duplicate issue or PR was found after searches for `sandbox
git workspace`, `git push sandbox`, and `node_modules sandbox upload`.
Bug report:
- What happened: sandbox-backed agent workspaces could receive a `.git`
file that pointed at host-only git state, leaving the sandbox unable to
run normal git workflows. The sandbox overlay upload could also include
ignored dependency directories, creating very large transfers.
- Expected behavior: sandbox and remote runtimes should prepare a usable
git-backed workspace, copy only the necessary workspace overlay, and
restore git history plus file changes without depending on a host-only
`.git` path.
- Steps to reproduce:
1. Run an agent in a sandbox-backed workspace whose local git checkout
is a worktree.
2. Ask the agent to complete a GitHub workflow that requires commit/push
access.
3. Observe that git operations can fail inside the sandbox, and ignored
dependency trees can be uploaded as part of the workspace overlay.
- Paperclip version or commit: reproduced against `master` before this
PR, base `7aa212296eb1`.
- Deployment mode: local dev / sandbox-backed runtime.
- Installation method: built from source.
- Agent adapters involved: local adapters using shared adapter-utils
runtime preparation.
- Database mode: not database-related.
- Access context: agent runtime.
- Local verification environment: Node.js v25.6.1, pnpm 9.15.4, macOS
arm64.
- Privacy checklist: all pasted output was reviewed for secrets, private
hostnames, local usernames, and internal instance links.
## What Changed
- Added a GitHub workflow push preflight so agent runs can detect
missing push credentials when a workflow explicitly needs GitHub
publishing.
- Added shared git workspace sync helpers for shallow HEAD import/export
and dirty/untracked overlay tracking.
- Updated sandbox managed runtime setup to use git history plus a
selected overlay instead of uploading the full local workspace for
git-backed workspaces.
- Bounded sandbox archive upload/download paths so large payloads stream
or chunk instead of materializing one oversized string.
- Excluded `.git` and ignored dependency trees from sandbox upload,
download, and restore baselines while preserving local ignored
directories during sync-back.
- Added focused tests for git workspace sync, sandbox overlay selection,
transfer chunking, and heartbeat push-preflight behavior.
## Verification
- `pnpm exec vitest run
packages/adapter-utils/src/git-workspace-sync.test.ts
packages/adapter-utils/src/sandbox-managed-runtime.test.ts
packages/adapter-utils/src/command-managed-runtime.test.ts
server/src/__tests__/heartbeat-project-env.test.ts
server/src/__tests__/heartbeat-workspace-session.test.ts`
- `pnpm --filter @paperclipai/adapter-utils typecheck`
- `pnpm --filter @paperclipai/server typecheck`
- `pnpm build`
- Public-hygiene scan of the PR diff and commit messages for internal
issue ids, local paths, private hostnames, and obvious token patterns.
## Risks
- Medium risk: this changes sandbox runtime synchronization semantics
for git-backed workspaces, especially around dirty tracked files,
untracked files, deleted paths, and ignored files.
- The main mitigation is focused test coverage for upload contents,
restore exclusions, and git round-trip behavior.
- The SSH runtime keeps the current bundle-based implementation from
`master`; this PR only aligns shared excludes and sandbox behavior with
that model.
## Model Used
OpenAI Codex, GPT-5-based coding agent, tool-enabled shell/git/GitHub
workflow, with code execution and repository inspection.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [ ] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip is the control plane for running AI-agent companies, so
long-running remote work needs to stay observable to human operators.
> - Cloud / sandbox agents are an active roadmap area, and their
workspace sync path is part of the runtime substrate every remote coding
run depends on.
> - In the sandbox and SSH execution-target flows, Paperclip logged that
sync had started, then often went silent for the full transfer window.
> - That made large remote syncs feel stalled and also hid a real
performance problem in the command-managed sandbox upload path.
> - The first part of this pull request threads a throttled
progress-reporting surface through the adapter execution-target stack so
sync and restore work can emit meaningful updates.
> - The second part fixes the command-managed sandbox transport itself:
it removes the old serial 32KB append bottleneck, but also falls back
away from the single-stream path when a provider-backed sandbox runner
cannot surface mid-flight stdin progress.
> - The result is that sandbox and SSH transfers are both faster and
more observable, including the live Daytona-style sandbox case that
previously only emitted `0%` and `100%`.
## Linked Issues or Issue Description
No public GitHub issue exists for this bug, so it is described inline
below following the bug report template.
### What happened
- Remote sandbox and SSH workspace syncs could spend a long time
transferring data while only logging a start line (`Syncing workspace
and runtime assets to sandbox environment`) and, at best, a terminal
line.
- In the command-managed sandbox path, the original upload
implementation also paid a large performance cost by appending base64
data in many small sequential remote writes (thousands of serial 32KB
round-trips on a large workspace).
- After the initial transport rewrite, live provider-backed sandbox runs
still only emitted `0%` and `100%` because the single-stream stdin RPC
buffered progress until completion.
### Expected behavior
- Long-running sandbox and SSH syncs should periodically report how much
of the transfer is complete (a percentage and/or MB transferred) so an
operator can tell the run is healthy and making progress rather than
stuck.
- The main sandbox upload path should not be artificially slow.
- A transfer that fails partway should leave an explicit failure marker
in the log rather than a dangling intermediate percentage.
### Steps to reproduce
1. Run an agent against a sandbox (command-managed) or SSH
(remote-managed) execution target with a non-trivial workspace.
2. Watch the run log during the workspace/runtime asset sync phase.
3. Observe that the log shows the sync start line and then stays silent
for the full transfer (live provider-backed sandbox runs only show `0%`
then `100%`).
### Paperclip version or commit
- Branch `PAPA-825-provide-status-updates-when-syncing-sandboxes` off
`master`.
### Deployment mode
- Self-hosted / local instance using sandbox (command-managed) and SSH
(remote-managed) execution targets, including provider-backed sandbox
runners.
## What Changed
- Added shared throttled runtime progress reporting and threaded
`onProgress` through the adapter execution-target surface and adapter
`execute.ts` entrypoints.
- Added sync and restore progress reporting for the command-managed
sandbox path and the SSH/remote-managed path, including git
import/export progress where totals are known.
- Reworked command-managed sandbox transfer behavior so uploads use the
faster single-stream path when appropriate, but fall back to chunked
progress-emitting writes when the runner cannot expose mid-stream stdin
progress.
- Marked provider-backed environment sandbox runners as not supporting
single-stream stdin progress so live sandbox runs emit meaningful
intermediate updates instead of only `0%` and `100%`.
- Emit an explicit terminal failure marker (`failed at NN% (x/y MB)`)
when an SSH/tar transfer rejects, so a failed sync no longer leaves a
dangling intermediate percentage in the log.
- Run the SSH sync/restore size estimate (local directory walk / remote
`du` probe) concurrently with the transfer instead of awaiting it before
opening the pipe, so progress instrumentation no longer adds startup
latency proportional to workspace file count.
- Added and extended focused regression coverage for runtime progress
throttling and the new failure marker, command-managed sandbox
transfers, sandbox orchestration, SSH transfer progress, and environment
execution-target wiring.
## Verification
- `pnpm exec vitest run
packages/adapter-utils/src/runtime-progress.test.ts
packages/adapter-utils/src/ssh-fixture.test.ts
packages/adapter-utils/src/command-managed-runtime.test.ts
packages/adapter-utils/src/sandbox-managed-runtime.test.ts`
- `pnpm exec vitest run
packages/adapter-utils/src/command-managed-runtime.test.ts
server/src/__tests__/environment-execution-target.test.ts`
- `npx tsc --noEmit` for `packages/adapter-utils`
## Risks
- The provider-backed sandbox fallback now prefers chunked
command-managed writes when progress hooks are active, so
small-to-medium uploads may trade some raw throughput for observable
intermediate progress on runtimes that cannot surface true mid-stream
stdin progress.
- Progress percentages on tar-based transfers still depend on estimates
in some cases, so operators may briefly see MB-only lines before the
estimate resolves, then near-final clamping before the terminal `100%`
line.
- This PR changes shared execution-target behavior used by multiple
adapters, so regressions would most likely appear in remote runtime
setup/teardown flows rather than in a single adapter.
## Model Used
- Initial implementation: OpenAI GPT-5.4 via Codex local agent
(`codex_local`), high reasoning mode.
- Observability follow-ups (failure marker, concurrent size estimate,
added tests): Claude Opus 4.8 via Claude Code (`claude_local`).
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [ ] If this change affects the UI, I have included before/after
screenshots
- [ ] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [ ] All Paperclip CI gates are green
- [ ] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [ ] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
> _Stacked on top of #5685 → #5686. Diff against master includes commits
from earlier PRs in the stack — review focuses on the two new commits
(`Extend sandbox callback bridge for Worker-hosted plugins` + `Add
Cloudflare sandbox provider plugin`)._
## Thinking Path
> - Paperclip orchestrates AI agents for zero-human companies
> - Each agent runs in a sandbox environment, and operators choose which
provider backs that sandbox — today E2B and Daytona are bundled with the
platform
> - Cloudflare Workers + Durable Objects + the Sandbox SDK offer a
credible new option: globally distributed, cheap idle, and
operator-deployable as a single Worker
> - To plug it in, Paperclip needs (a) a provider plugin that speaks the
`PaperclipPluginManifestV1` lifecycle and (b) a small operator-deployed
Worker — the **bridge** — that adapts Paperclip's runtime RPCs to the
Cloudflare Sandbox SDK
> - The plugin extends the existing sandbox-callback-bridge with a
`bridge.transport: "worker"` discriminator so the platform routes
runtime RPCs through the Worker bridge instead of the in-process runner
> - This pull request adds the plugin, the bridge Worker template, and
the supporting adapter-utils + server hooks the new transport needs
> - The benefit is that operators can run sandboxes on Cloudflare's edge
with no new platform code beyond installing the plugin and deploying the
Worker
## What Changed
**Shared support (`Extend sandbox callback bridge for Worker-hosted
plugins`):**
- `packages/adapter-utils/src/sandbox-callback-bridge.{ts,test.ts}`:
expose `expectedHostHeader` so plugin-side bridge clients can verify the
canonical request envelope before forwarding.
- `packages/adapter-utils/src/command-managed-runtime.{ts,test.ts}`:
relax the always-fresh runner construction so callers can re-use a
runner across exec calls (Worker-hosted bridges hold the runner inside a
Durable Object).
- `server/src/services/environment-runtime.ts` +
`environment-runtime.test.ts`: route Worker-hosted bridges through the
same env-shaping path as E2B and pin the `requestEnv` contract.
- `server/src/services/plugin-environment-driver.ts`: thread an optional
`issueId` through the runtime descriptor so bridges can scope leases to
the originating issue (used by Cloudflare to map a sandbox to the
issue/workflow for billing and audit).
- `packages/plugins/sdk/src/protocol.ts`: add `issueId?` to
`PluginEnvironmentDriverBaseParams` and the new `bridge.transport:
"worker"` discriminator that the new plugin declares.
- `server/__tests__/heartbeat-plugin-environment.test.ts`: pin the
heartbeat path against the new runtime descriptor.
**The Cloudflare plugin itself (`Add Cloudflare sandbox provider
plugin`):**
- `packages/plugins/sandbox-providers/cloudflare/`: plugin entry,
manifest, plugin runtime (lifecycle + bridge client), config parsing,
and Vitest coverage. Manifest declares `bridge.transport: "worker"` so
the platform routes runtime RPCs through the bridge client.
- `bridge-template/`: a Worker template the operator deploys with
`wrangler`. Owns Durable Object-backed sessions (`sessions.ts`),
exec/stream routes (`exec.ts`, `routes.ts`), and an HMAC auth layer
(`auth.ts`) that pins the `Host` header surface. Includes the
SDK-contract-correct exec implementation, lease recovery, and chunked
stdout/stderr streaming.
- Tests cover lease/session handoff (`bridge-template/src/exec.test.ts`,
`routes.test.ts`), bridge client request shaping
(`src/bridge-client.test.ts`), and end-to-end plugin behavior
(`src/plugin.test.ts`) including streamed exec output. 27 tests in
total.
- `README.md` walks the operator through deploying the bridge Worker,
registering the plugin, and configuring the runtime.
## Verification
- `pnpm typecheck`
- `pnpm exec vitest run --no-coverage
packages/adapter-utils/src/sandbox-callback-bridge.test.ts
packages/adapter-utils/src/command-managed-runtime.test.ts
server/src/__tests__/environment-runtime.test.ts
server/src/__tests__/heartbeat-plugin-environment.test.ts`
- `(cd packages/plugins/sandbox-providers/cloudflare && pnpm test)` — 27
passing
For an operator-side smoke test:
1. Deploy the bridge: `cd
packages/plugins/sandbox-providers/cloudflare/bridge-template &&
wrangler deploy`
2. Register the plugin in your Paperclip instance, point its bridge URL
at the deployed Worker, set the HMAC shared secret.
3. Create a sandbox environment whose provider is `cloudflare`, then run
a Codex or Claude job against it.
## Risks
- Adds a new `bridge.transport: "worker"` code path, but the existing
E2B / Daytona transports go through the same shaped helpers and have
explicit test coverage that pins their behavior unchanged.
- The Worker bridge stores session state in a Durable Object; operator
instances must be aware of the corresponding Cloudflare costs (DO
requests, storage). Documented in the README.
- The `issueId` plumbing is optional throughout — existing plugins that
don't supply it continue to work.
## Model Used
- Provider: Anthropic
- Model: Claude Opus 4.7 (1M context)
- Capabilities used: extended reasoning, tool use (Read/Edit/Bash/Grep)
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [ ] If this change affects the UI, I have included before/after
screenshots — N/A, no UI change
- [x] I have updated relevant documentation to reflect my changes
(plugin README, bridge-template README)
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip orchestrates AI-agent companies and needs secrets handling
to work across local development, hosted operators, and governed agent
execution.
> - The affected subsystem is the company-scoped secrets control plane:
database schema, server services/routes, CLI workflows, and the Secrets
settings UI.
> - The gap was that secrets were local-only and operators could not
manage provider vaults or import existing remote references without
exposing plaintext.
> - This branch adds provider vault configuration plus an AWS Secrets
Manager remote-import path while preserving company boundaries, binding
context, and audit trails.
> - I kept the PR to a single branch PR, removed unrelated
lockfile/package drift, rebased the full branch onto the current
`public-gh/master`, and addressed fresh Greptile findings.
> - The benefit is a reviewable implementation of provider-backed
secrets with focused tests covering provider selection, import
conflicts, deleted secret reuse, rotation guards, and AWS signing
behavior.
## What Changed
- Added provider vault support for company secrets, including provider
config storage, default vault handling, health checks, binding usage,
access events, and remote import preview/commit.
- Added an AWS Secrets Manager provider using SigV4 request signing,
bounded request timeouts, namespace guardrails, cached runtime
credential resolution, and external-reference linking without plaintext
reads.
- Added Secrets UI surfaces for vault management and remote import, plus
CLI/API documentation for setup and operations.
- Stabilized routine webhook secret binding paths and SSH
environment-driver fixture bindings discovered during verification.
- Addressed Greptile and CI findings: no lockfile/package drift,
monotonic migration metadata, disabled-vault default races, soft-deleted
secret hiding/recreate behavior, remove behavior with disabled vaults,
soft-deleted external-reference re-import, non-active rotation guards,
managed-secret soft deletion through PATCH, and per-call AWS SDK
credential client churn.
- Rebased this branch onto `public-gh/master` at `0e1a5828` and
force-pushed with lease to keep this as the single PR for the branch.
## Verification
- `git fetch public-gh master`
- `git rebase public-gh/master`
- `git diff --name-only public-gh/master...HEAD | grep
'^pnpm-lock\.yaml$' || true` confirmed `pnpm-lock.yaml` is not in the PR
diff.
- Confirmed migration ordering: master ends at `0081_optimal_dormammu`;
this PR adds `0082_dry_vision` and
`0083_company_secret_provider_configs`.
- Inspected migrations for repeat safety: new tables/indexes use `IF NOT
EXISTS`; foreign keys are guarded by `DO $$ ... IF NOT EXISTS`; column
additions use `ADD COLUMN IF NOT EXISTS`.
- `pnpm -r typecheck` passed before the Greptile follow-up commits.
- `pnpm test:run` ran the full stable Vitest path before the Greptile
follow-up commits; it completed with 3 timing-related failures under
parallel load: `codex-local-execute.test.ts`,
`cursor-local-execute.test.ts`, and `environment-service.test.ts`.
- `pnpm --filter @paperclipai/server exec vitest run
src/__tests__/codex-local-execute.test.ts
src/__tests__/cursor-local-execute.test.ts
src/__tests__/environment-service.test.ts` passed on targeted rerun
(`24/24`).
- `pnpm build` passed before the Greptile follow-up commits. Vite
reported existing chunk-size/dynamic-import warnings.
- After Greptile follow-up commits: `pnpm --filter @paperclipai/server
exec vitest run src/__tests__/secrets-service.test.ts` passed (`26/26`).
- After Greptile follow-up commits: `pnpm --filter @paperclipai/server
exec vitest run src/__tests__/aws-secrets-manager-provider.test.ts
src/__tests__/secrets-service.test.ts` passed (`39/39`).
- After Greptile follow-up commits: `pnpm --filter @paperclipai/server
typecheck` passed.
- Captured Storybook screenshots from `ui/storybook-static` for visual
review.
- Latest PR checks on `5ca3a5cf`: `policy`, serialized server suites
1/4-4/4, `Canary Dry Run`, `e2e`, `security/snyk`, and `Greptile Review`
pass; aggregate `verify` is still registering the completed child
checks.
- Greptile review loop continued through the latest requested pass; all
Greptile review threads are resolved and the latest `Greptile Review`
check on `5ca3a5cf` passed with 0 comments added.
## Screenshots
Before: the provider-vault and remote-import surfaces did not exist on
`master`; these are after-state screenshots from the Storybook fixtures.
## Risks
- Migration risk: this adds new secret provider tables and extends
existing secret rows. The migrations were checked for monotonic ordering
and idempotent guards, but reviewers should still inspect upgrade
behavior carefully.
- Provider risk: AWS support uses direct SigV4 requests. Automated tests
cover signing, request timeouts, vault-config selection, namespace
guardrails, pending-version archival, sanitized provider errors, and
service-level cleanup paths. A real-vault AWS smoke test remains
deployment validation for an operator with AWS credentials rather than
an unverified merge blocker in this local branch.
- UI risk: the Secrets page and import dialog are large new surfaces;
screenshots are included above for reviewer inspection.
- Verification risk: the full local stable test command hit
parallel-load timing failures, although the exact failed files passed
when rerun directly.
- Operational risk: remote import intentionally avoids plaintext reads;
operators must understand that imported external references resolve at
runtime and may fail if AWS permissions change.
> For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and
discuss it in `#dev` before opening the PR. Feature PRs that overlap
with planned core work may need to be redirected — check the roadmap
first. See `CONTRIBUTING.md`.
## Model Used
- OpenAI Codex, GPT-5 coding agent with local shell/tool use in the
Paperclip worktree. Exact context-window size was not exposed by the
runtime.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [ ] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
## Thinking Path
> - Paperclip orchestrates AI agents for zero-human companies
> - Adapters expose a Test action that probes the configured runtime —
install, resolvability, hello — to give operators a fast yes/no on
whether an environment is healthy
> - The Codex test path was running its hello probe directly without
going through the managed-runtime preparation that production runs use,
so a healthy production setup could still report a probe failure
> - The plugin worker manager wasn't surfacing terminated workers
cleanly, leaving the runtime probe waiting on a dead worker until the
request timed out
> - This pull request routes the Codex test probe through
`prepareAdapterExecutionTargetRuntime` (so it sees the same managed
Codex home production sees), exposes `commandCwd` on
`createCommandManagedRuntimeClient` so callers can target a per-probe
directory without leaking the workspace `remoteCwd`, and propagates
plugin-worker termination as a usable error instead of a hang
> - The benefit is the Codex Test action mirrors production behavior
end-to-end, and probes against a terminated plugin worker fail fast
instead of timing out
## What Changed
- `packages/adapter-utils/src/command-managed-runtime.ts`: rename the
`remoteCwd` knob to `commandCwd` so callers can target a per-probe
directory without inheriting the workspace cwd; matching test coverage
in `command-managed-runtime.test.ts`
- `packages/adapter-utils/src/sandbox-callback-bridge.{ts,test.ts}`:
small fixes to keep callback bridge stop semantics deterministic
- `packages/adapters/codex-local/src/server/test.ts`: thread the Codex
hello probe through `prepareAdapterExecutionTargetRuntime` +
`prepareManagedCodexHome` so the probe sees the same managed home
production sees; new `test.remote.test.ts` covers the remote probe path
- `packages/adapters/cursor-local/src/server/execute.ts`: small
probe-side cleanup that aligns with the new commandCwd contract
- `server/src/services/plugin-worker-manager.ts`: surface plugin-worker
termination as a structured error so callers fail fast; new
`plugin-worker-terminated.cjs` fixture and
`plugin-worker-manager.test.ts` cases pin the behavior
## Verification
- `pnpm vitest run --no-coverage --project @paperclipai/adapter-utils
--project @paperclipai/adapter-codex-local --project
@paperclipai/adapter-cursor-local --project @paperclipai/server` —
1749/1750 passing (1 unrelated skip)
- `pnpm typecheck` clean
## Risks
Low–medium. The `remoteCwd → commandCwd` rename is a parameter renaming
on an internal helper used only by adapter test/execute paths in this
repo. The plugin-worker-terminated path was previously a hang; failing
fast may surface latent timeouts as explicit termination errors in
callers that already expected them.
## Model Used
Claude Opus 4.7 (1M context)
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable — new tests cover
commandCwd, plugin-worker termination, and Codex remote test path
- [x] If this change affects the UI, I have included before/after
screenshots — N/A (no UI)
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge
---
> **Stacked PR.** Sits on top of #5444 which adds the per-run runtime
API surface this PR builds on. Cumulative diff against `master` includes
that PR's content; the files touched by *this* PR's commit are listed
under "What Changed" above. Will rebase onto `master` and force-push
once #5444 merges.
## Thinking Path
> - Paperclip orchestrates AI agents for zero-human companies
> - Agents execute in sandboxed remote environments served by pluggable
sandbox
> providers (E2B today, more later)
> - Today every sandbox command runs under `sh -lc` regardless of what
the
> provider's container actually ships
> - That misses bash-only shell init on E2B (which ships bash) and
prevents
> future providers from declaring a different default — there's no way
for a
> provider to say "I have bash, use it"
> - This PR adds a `shellCommand` field to sandbox execution targets so
providers
> can declare their preferred shell ("bash" for E2B), threads it through
the
> sandbox-managed-runtime client, callback bridge, and execution-target
shell
> helper, and validates the value at the lease-metadata boundary
> - The benefit is that sandbox commands run under the right shell on
the right
> provider, and adding new sandbox providers only needs to declare a
shell
> preference
## What Changed
- Added `packages/adapter-utils/src/sandbox-shell.ts` exporting
`preferredShellForSandbox(shellCommand)` (returns `"bash"` if input is
`"bash"`,
else `"sh"`)
- Added `shellCommand?: "bash" | "sh" | null` to
`AdapterSandboxExecutionTarget`
and `CommandManagedRuntimeSpec`; threaded it through
`runAdapterExecutionTargetShellCommand`,
`prepareAdapterExecutionTargetRuntime`,
and `startAdapterExecutionTargetPaperclipBridge`
- `createCommandManagedRuntimeClient`, `prepareCommandManagedRuntime`,
and
`createCommandManagedSandboxCallbackBridgeQueueClient` now take an
optional
`shellCommand` and use `preferredShellForSandbox` to pick the shell
- `startSandboxCallbackBridgeServer` accepts a `shellCommand` for its
server
startup, readiness probe, and stop hook
- E2B sandbox plugin declares `shellCommand: "bash"` in `leaseMetadata`
- `resolveEnvironmentExecutionTarget` reads `shellCommand` from lease
metadata
(validating against `"bash" | "sh" | null`)
- `environment-runtime.ts` adds `"shellCommand"` to
`INTERNAL_PLUGIN_SANDBOX_CONFIG_KEYS`
so the field round-trips through internal plugin config without leaking
to
external plugin metadata
- Updated tests in `command-managed-runtime.test.ts`,
`execution-target-sandbox.test.ts`, `sandbox-callback-bridge.test.ts`,
`environment-execution-target.test.ts`
## Verification
- `pnpm --filter @paperclipai/adapter-utils test`
- `pnpm --filter @paperclipai/server test --
environment-execution-target`
- `pnpm --filter @paperclipai/sandbox-providers-e2b test`
- Manual QA: boot a Paperclip instance, create an E2B-backed
environment, run a
claude_local agent against it, and confirm the run completes (verifies
bash
shell semantics flow through the callback bridge end-to-end)
## Risks
- E2B sandbox commands now run under `bash -lc` instead of `sh -lc`.
Bash is a
strict superset for the commands we issue (no busybox-only flags in our
shell
scripts), so risk is low. The shellCommand field is opt-in via lease
metadata —
providers that don't declare it stay on `sh`.
- New optional field on `CommandManagedRuntimeSpec` and
`AdapterSandboxExecutionTarget`.
Consumers ignoring the field retain previous behaviour (sh).
- Lease metadata now carries an additional field. Existing leases
without
`shellCommand` resolve to `null` and fall back to sh — backwards
compatible.
## Model Used
- OpenAI GPT-5.4 (reasoning effort: high) via Codex CLI
- Provider: OpenAI
- Used to author the code changes in this PR
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [ ] If this change affects the UI, I have included before/after
screenshots — N/A (no UI changes)
- [ ] I have updated relevant documentation to reflect my changes — N/A
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge
## Thinking Path
> - Paperclip orchestrates AI agents for zero-human companies
> - Agents can run inside sandboxed environments like E2B, which are
isolated from the host network
> - Sandboxed agents need to call back to the Paperclip API to report
progress, post comments, and update issue status
> - But sandbox environments cannot reach the Paperclip server directly
because they run in isolated network namespaces
> - This PR adds a callback bridge that proxies API requests from the
sandbox to the Paperclip server, running as a local HTTP server on the
host that forwards authenticated requests
> - The bridge is started automatically when an adapter launches a
sandbox execution, and torn down when the run completes
> - The benefit is sandboxed agents can interact with the Paperclip API
without requiring network-level access to the host, enabling E2B and
similar providers to work end-to-end
## What Changed
- Added `sandbox-callback-bridge.ts` in `packages/adapter-utils/` — a
lightweight HTTP bridge server that accepts requests from sandbox
environments and proxies them to the Paperclip API with authentication
- Added request validation and security policy: the bridge only forwards
requests to the configured API URL, validates content types, enforces
size limits, and rejects non-API paths
- Wired the bridge into all remote adapter execute paths (claude, codex,
cursor, gemini, pi) — the bridge starts before the agent process and the
bridge URL is passed via environment variables
- Updated `environment-execution-target.ts` to prefer the explicit API
URL from environment lease metadata for sandbox callback routing
- Fixed Claude sandbox runtime setup to work with the bridge
configuration
- Added comprehensive test coverage for bridge request handling, policy
enforcement, and sandbox execution integration
- Fixed browser bundling — the bridge module is excluded from the
frontend bundle via the adapter-utils index export
## Verification
- `pnpm test` — all existing and new tests pass, including bridge unit
tests and sandbox execution integration tests
- `pnpm typecheck` — clean
- Manual: configure an E2B environment, run an agent task, verify the
agent can post comments and update issue status through the bridge
## Risks
- Medium. This is a new network-facing component (HTTP server on
localhost). The security policy restricts forwarding to the configured
API URL only and validates all requests, but any proxy introduces attack
surface. The bridge binds to localhost only and is scoped to the
lifetime of a single agent run.
## Model Used
Codex GPT 5.4 high via Paperclip.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [ ] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge
Nicky Leach
Dotta
Devin Foley
