## Thinking Path - Followed a silent nonzero Hermes exit from child-process result parsing through heartbeat run, runtime, task-session, and agent finalization. - Found two gaps: the adapter could return `errorMessage: null` for a numeric nonzero exit, and heartbeat later reused the nullable adapter field instead of its normalized fallback. - Kept timeout, signal-cancellation, and specific parsed diagnostics authoritative. ## Linked Issue(s) / Bug Report Related to #9751 (stderr classification) and #9519 (exit-zero finalization), but this is a separate failure mode. Reproduction: run Hermes with a child result equivalent to `exitCode: 1`, `timedOut: false`, and no parsed diagnostic. The heartbeat row derives `Adapter failed`, while runtime/task-session/agent finalization can persist null diagnostics. ## What Changed - Give silent numeric nonzero Hermes exits a stable fallback such as `Hermes exited with code 1`. - Preserve specific parsed errors and timeout/signal semantics. - Reuse the normalized persisted run error for recovered runtime state, task-session `lastError`, and agent `errorReason`. - Add adapter-level and embedded-Postgres regressions. ## Verification - Hermes adapter `execute.onspawn.test.ts` — 7 passed. - Focused heartbeat normalized-error regression — 1 passed (91 skipped). - `pnpm --filter @paperclipai/hermes-paperclip-adapter typecheck` — passed. - `pnpm --filter @paperclipai/server typecheck` — passed. - `git diff --check origin/master...HEAD` — passed. Independent review also ran the full recovery file: the changed regression passed; one unrelated pre-existing timing-sensitive test timed out. ## Risks / Rollout Notes Low risk. Fallback text is used only when a numeric nonzero exit has no better diagnostic. Existing timeout, signal, and parsed-error precedence remains unchanged. ## Model Used OpenAI Codex `gpt-5.6-sol` with repository inspection, test execution, and independent read-only review. ## 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 (not applicable: internal diagnostics only) - [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: cucurigoo <cucurigoo@users.noreply.github.com> |
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README.md
Paperclip Adapters for Hermes Agent
A Paperclip adapter package that lets you run Hermes Agent as a managed employee in a Paperclip company.
Hermes Agent is a full-featured AI agent by Nous Research with 30+ native tools, persistent memory, session persistence, 80+ skills, MCP support, and multi-provider model access.
This package owns both built-in Hermes adapter types:
hermes_localruns the local Hermes CLI as a child process. The package root exports remain compatible with the original local adapter.hermes_gatewaycalls an already-running Hermes API server over HTTP/SSE. Gateway entrypoints live under the./gatewayexport namespace.
Choose hermes_local when Paperclip and Hermes run on the same trusted host
and Paperclip should start hermes chat for each heartbeat. Choose
hermes_gateway when Hermes is already running as an API server, often on
another host, in Docker, or behind a private-network/TLS endpoint. The adapter
type keys did not change during package consolidation.
Key Features
This adapter provides:
- 8 inference providers — Anthropic, OpenRouter, OpenAI, Nous, OpenAI Codex, ZAI, Kimi Coding, MiniMax
- Skills integration — Scans both Paperclip-managed and Hermes-native skills (
~/.hermes/skills/), with sync/list/resolve APIs - Structured transcript parsing — Raw Hermes stdout is parsed into typed
TranscriptEntryobjects so Paperclip renders proper tool cards with status icons and expand/collapse - Rich post-processing — Converts Hermes ASCII banners, setext headings, and
+--+table borders into clean GFM markdown - Comment-driven wakes — Agents wake to respond to issue comments, not just task assignments
- Auto model detection — Reads
~/.hermes/config.yamlto pre-populate the UI with the user's configured model - Session codec — Structured validation and migration of session state across heartbeats
- Benign stderr reclassification — MCP init messages and structured logs are reclassified so they don't appear as errors in the UI
- Session source tagging — Sessions are tagged as
toolsource so they don't clutter the user's interactive history - Filesystem checkpoints — Optional
--checkpointsfor rollback safety - Thinking effort control — Passes
--reasoning-effortfor thinking/reasoning models
Hermes Agent Capabilities
| Feature | Claude Code | Codex | Hermes Agent |
|---|---|---|---|
| Persistent memory | ❌ | ❌ | ✅ Remembers across sessions |
| Native tools | ~5 | ~5 | 30+ (terminal, file, web, browser, vision, git, etc.) |
| Skills system | ❌ | ❌ | ✅ 80+ loadable skills |
| Session search | ❌ | ❌ | ✅ FTS5 search over past conversations |
| Sub-agent delegation | ❌ | ❌ | ✅ Parallel sub-tasks |
| Context compression | ❌ | ❌ | ✅ Auto-compresses long conversations |
| MCP client | ❌ | ❌ | ✅ Connect to any MCP server |
| Multi-provider | Anthropic only | OpenAI only | ✅ 8 providers out of the box |
Installation
This package ships with Paperclip core as the built-in hermes_local and
hermes_gateway adapters. No Adapter manager installation is required for
normal Paperclip use.
Prerequisites
- Hermes Agent installed (
pip install hermes-agent) - Python 3.10+
- At least one LLM API key (Anthropic, OpenRouter, or OpenAI)
Quick Start
1. Optional: override the built-in for adapter development
For local adapter development, install the package from a local path in Adapter
manager, or add an entry to ~/.paperclip/adapter-plugins.json and restart
Paperclip. The external package can override either built-in Hermes adapter
while it is enabled:
[
{
"packageName": "@paperclipai/hermes-paperclip-adapter",
"localPath": "/absolute/path/to/paperclip/packages/adapters/hermes",
"type": "hermes_local",
"installedAt": "2026-06-23T00:00:00.000Z"
}
]
Use "type": "hermes_gateway" with the same package when testing a gateway
override.
The package root exports createServerAdapter() for the local server adapter,
a declarative config schema for the generic agent form, and ./ui-parser for
local run transcript parsing. Gateway entrypoints are exported from ./gateway,
./gateway/server, ./gateway/ui, ./gateway/cli, and ./gateway/ui-parser.
Paperclip core imports these same package entrypoints for built-in adapter
registration.
2. Create a local Hermes agent in Paperclip
In the Paperclip UI or via API, create an agent with adapter type hermes_local:
{
"name": "Hermes Engineer",
"adapterType": "hermes_local",
"adapterConfig": {
"model": "anthropic/claude-sonnet-4",
"maxIterations": 50,
"timeoutSec": 300,
"persistSession": true,
"enabledToolsets": ["terminal", "file", "web"]
}
}
This mode shells out to the local hermes CLI. Paperclip injects runtime
environment variables and captures stdout/stderr from the child process.
3. Create a Hermes gateway agent in Paperclip
Start Hermes with its API server enabled first:
API_SERVER_ENABLED=true \
API_SERVER_KEY=<generated-secret> \
hermes gateway run --replace --accept-hooks
Then create an agent with adapter type hermes_gateway:
{
"name": "Hermes Gateway Engineer",
"adapterType": "hermes_gateway",
"adapterConfig": {
"apiBaseUrl": "http://127.0.0.1:8642",
"apiKey": "<same-value-as-API_SERVER_KEY>",
"paperclipApiUrl": "http://127.0.0.1:3100",
"sessionKeyStrategy": "issue",
"timeoutSec": 600
}
}
If the URL you have is the default Hermes dashboard at
http://127.0.0.1:9119 or the default chat URL at
http://127.0.0.1:9119/chat, Paperclip maps it to
http://127.0.0.1:9119/api before calling Hermes API routes. /chat and the
dashboard root are browser UI routes; Paperclip tests /api/health and starts
runs with /api/v1/runs after mapping them to the API base.
This mode does not start Hermes. It creates runs with POST /v1/runs, streams
Hermes events with SSE, polls run status as a fallback, and stops timed-out runs
with POST /v1/runs/{run_id}/stop.
Compatibility with the old gateway package
@paperclipai/adapter-hermes-gateway remains as a deprecated compatibility shim
for one release. It re-exports the gateway entrypoints from
@paperclipai/hermes-paperclip-adapter/gateway and preserves the legacy exports
for existing plugin installs. New installs and built-in Paperclip registrations
should use @paperclipai/hermes-paperclip-adapter; the adapter type remains
hermes_gateway.
Runtime API guidance
Hermes receives Paperclip runtime identity through environment variables:
PAPERCLIP_API_URLPAPERCLIP_API_KEYPAPERCLIP_RUN_ID
Prompts should reference those variables directly. Command output may redact
secret values, so do not copy printed tokens into comments or config. Use
Authorization: Bearer $PAPERCLIP_API_KEY on Paperclip API requests and
X-Paperclip-Run-Id: $PAPERCLIP_RUN_ID on mutating issue requests. For
multiline comments or status updates, preserve newlines with a heredoc plus
jq --arg.
Hermes-originated Paperclip tasks
The package includes a Hermes skill/helper for the reverse direction: a user
starts in Hermes and asks Hermes to create or update Paperclip work. This is not
the same as Paperclip waking Hermes through hermes_local or hermes_gateway.
Configure Paperclip access in Hermes env/profile secrets, not prompt text:
PAPERCLIP_API_URL=http://127.0.0.1:3100/api
PAPERCLIP_BRIDGE_API_KEY=<task-bridge-scoped-agent-api-key>
Optional env values:
PAPERCLIP_COMPANY_IDPAPERCLIP_AGENT_IDPAPERCLIP_RUN_ID
The bundled paperclip-task-bridge skill provides deterministic helper
commands:
node ./paperclip-task.mjs list-assigned
node ./paperclip-task.mjs create-task --parent-id "<approved-parent-issue-id>" --title "Investigate checkout failures" --description "Capture failing request and root cause."
node ./paperclip-task.mjs comment --issue PAP-123 --body "Found the failing request path."
node ./paperclip-task.mjs update-status --issue PAP-123 --status in_review --comment "Ready for review."
The helper reads credentials from environment variables and prints only JSON
summaries. It supports create-task, comment, update-status, and
list-assigned.
Create the bridge key with scope.kind = "task_bridge" plus a parentIssueId
or projectId boundary. Do not use a normal claimed agent API key for
internet-facing Hermes chat/webhook task-bridge operations.
4. Assign work
Create issues in Paperclip and assign them to your Hermes agent. On each heartbeat, Hermes will:
- Receive the task instructions
- Use its full tool suite to complete the work
- Report results back to Paperclip
- Persist session state for continuity
Configuration Reference
Core
| Field | Type | Default | Description |
|---|---|---|---|
model |
string | anthropic/claude-sonnet-4 |
Model in provider/model format |
provider |
string | (auto-detected) | API provider: auto, openrouter, nous, openai-codex, zai, kimi-coding, minimax, minimax-cn |
timeoutSec |
number | 300 |
Execution timeout in seconds |
graceSec |
number | 10 |
Grace period before SIGKILL |
Tools
| Field | Type | Default | Description |
|---|---|---|---|
toolsets |
string | (all) | Comma-separated toolsets to enable (e.g. "terminal,file,web") |
Available toolsets: terminal, file, web, browser, code_execution, vision, mcp, creative, productivity
Session & Workspace
| Field | Type | Default | Description |
|---|---|---|---|
persistSession |
boolean | true |
Resume sessions across heartbeats |
worktreeMode |
boolean | false |
Git worktree isolation |
checkpoints |
boolean | false |
Enable filesystem checkpoints for rollback |
Advanced
| Field | Type | Default | Description |
|---|---|---|---|
hermesCommand |
string | hermes |
Custom CLI binary path |
verbose |
boolean | false |
Enable verbose output |
quiet |
boolean | true |
Quiet mode (clean output, no banner/spinner) |
extraArgs |
string[] | [] |
Additional CLI arguments |
env |
object | {} |
Extra environment variables |
promptTemplate |
string | (built-in) | Custom prompt template |
paperclipApiUrl |
string | http://127.0.0.1:3100/api |
Paperclip API base URL |
Prompt Template Variables
Use {{variable}} syntax in promptTemplate:
| Variable | Description |
|---|---|
{{agentId}} |
Paperclip agent ID |
{{agentName}} |
Agent display name |
{{companyId}} |
Company ID |
{{companyName}} |
Company name |
{{runId}} |
Current heartbeat run ID |
{{taskId}} |
Assigned task/issue ID |
{{taskTitle}} |
Task title |
{{taskBody}} |
Task instructions |
{{projectName}} |
Project name |
{{paperclipApiUrl}} |
Paperclip API base URL |
{{commentId}} |
Comment ID (when woken by a comment) |
{{wakeReason}} |
Reason this run was triggered |
Conditional sections:
{{#taskId}}...{{/taskId}}— included only when a task is assigned{{#noTask}}...{{/noTask}}— included only when no task (heartbeat check){{#commentId}}...{{/commentId}}— included only when woken by a comment
Architecture
Paperclip Hermes Agent
┌──────────────────┐ ┌──────────────────┐
│ Heartbeat │ │ │
│ Scheduler │───execute()──▶│ hermes chat -q │
│ │ │ │
│ Issue System │ │ 30+ Tools │
│ Comment Wakes │◀──results─────│ Memory System │
│ │ │ Session DB │
│ Cost Tracking │ │ Skills │
│ │ │ MCP Client │
│ Skill Sync │◀──snapshot────│ ~/.hermes/skills│
│ Org Chart │ │ │
└──────────────────┘ └──────────────────┘
The adapter spawns Hermes Agent's CLI in single-query mode (-q). Hermes
processes the task using its full tool suite, then exits. The adapter:
- Captures stdout/stderr and parses token usage, session IDs, and cost
- Parses raw output into structured
TranscriptEntryobjects (tool cards with status icons) - Post-processes Hermes ASCII formatting (banners, setext headings, table borders) into clean GFM markdown
- Reclassifies benign stderr (MCP init, structured logs) so they don't show as errors
- Tags sessions as
toolsource to keep them separate from interactive usage - Reports results back to Paperclip with cost, usage, and session state
Session persistence works via Hermes's --resume flag — each run picks
up where the last one left off, maintaining conversation context,
memories, and tool state across heartbeats. The sessionCodec validates
and migrates session state between runs.
Skills Integration
The adapter scans two skill sources and merges them:
- Paperclip-managed skills — bundled with the adapter, togglable from the UI
- Hermes-native skills — from
~/.hermes/skills/, read-only, always loaded
The listSkills / syncSkills APIs expose a unified snapshot so the
Paperclip UI can display both managed and native skills in one view.
Development
git clone https://github.com/paperclipai/paperclip
cd paperclip/packages/adapters/hermes
pnpm install
pnpm build
License
MIT — see LICENSE
Links
- Hermes Agent — The AI agent this adapter runs
- Paperclip — The orchestration platform
- Nous Research — The team behind Hermes
- Paperclip Docs — Paperclip documentation