Open WebUI Pipe: run Claude Code's agent loop inside chats via the Claude Agent SDK
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Thomas Friedel e100c801c4 fix(sandbox): expand ~ in CLAUDE_CONFIG_DIR + prune .claude from artifacts
shlex.quote() wraps its argument in single quotes, which suppress tilde
expansion. CLAUDE_CONFIG_DIR='~/chat-<id>/.claude' was being handed to
Claude Code as a literal path beginning with `~`, so the CLI treated it
as a relative directory and created `./~/chat-<id>/.claude/` under cwd.

Concrete symptoms:
  - Session history JSONLs written to the wrong path, silently defeating
    #5 (disk-based session recovery couldn't find them).
  - Per-chat config isolation (#9) silently degraded to a shared dir
    whose actual location depended on whatever cwd the turn ran in.
  - Symlinked skills placed at the correct path were never discovered by
    Claude, because CLAUDE_CONFIG_DIR pointed elsewhere.
  - `.claude.json` artifacts from the stray tree picked up by the
    artifact walker → attempted upload → open-terminal 403 because the
    `~` path segment failed its path-sanity check.

Fix by pre-expanding a leading `~/` to `$HOME/` and double-quoting so
$HOME expands at shell parse time. Also prune `.claude/` and any stray
`~` literal directory from the artifact find() so Claude's internal
state never masquerades as a user artifact going forward.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-19 00:02:04 +02:00
anthropic-proxy feat(sandbox): route Anthropic traffic through credential-injecting proxy 2026-04-18 21:59:59 +02:00
sandbox feat(sandbox): install document + DS tooling for vendored skills 2026-04-18 23:49:08 +02:00
.gitignore Initial commit: Claude Code pipe for Open WebUI 2026-04-18 14:55:03 +02:00
README.md Disable fast path — always run full agent loop 2026-04-18 15:19:57 +02:00
claude_agent_pipe.py Disable fast path — always run full agent loop 2026-04-18 15:19:57 +02:00
claude_agent_pipe_sandboxed.py fix(sandbox): expand ~ in CLAUDE_CONFIG_DIR + prune .claude from artifacts 2026-04-19 00:02:04 +02:00
sync_pipe.py feat: sandboxed Claude Code pipe via open-terminal 2026-04-18 21:02:01 +02:00

README.md

OpenWebUI Claude Code Pipe

Run Claude Code's agent loop from inside Open WebUI chats, via the Claude Agent SDK.

This is an Open WebUI Pipe that exposes Claude Code as a selectable model. Each chat gets its own isolated workspace directory; agent turns within the same chat resume the same Claude Code session, so context (files, prior tool calls) carries forward.

Features

  • Full Claude Code agent loop — Read, Write, Edit, Bash, Glob, Grep, WebSearch, WebFetch (configurable allowlist)
  • Per-chat workspaces — each chat_id gets a sandboxed working directory that persists across turns
  • Dual auth — bring your own Anthropic API key (pay-per-token) or a Claude Pro/Max OAuth token (bills against your subscription)
  • Streaming UI — tool calls render inline with previews; generated images/PDFs/CSVs surface as artifacts in the chat
  • Configurable valves — model, permission mode, tool allowlist, max turns, workspace root

Requirements

  • Open WebUI (any recent version with the Pipes/Functions framework)
  • Python deps (auto-installed by Open WebUI from the file header):
    • claude-agent-sdk>=0.1.60
    • anthropic>=0.40.0
  • The claude CLI must be available on the host running Open WebUI's Python backend (the SDK shells out to it). Install via npm install -g @anthropic-ai/claude-code.

Installation

  1. In Open WebUI, go to Workspace → Functions → + (or Admin Panel → Functions).
  2. Paste the contents of claude_agent_pipe.py into the editor.
  3. Save and enable the function.
  4. Open the function's Valves and configure auth (one of):
    • ANTHROPIC_API_KEY — standard pay-per-token billing
    • CLAUDE_CODE_OAUTH_TOKEN — generate on a machine with a browser via claude setup-token; bills against your Pro/Max/Team subscription
  5. A new model named Claude Code will appear in the model picker.

Configuration (Valves)

Valve Default Description
ANTHROPIC_API_KEY (env) Anthropic API key. Falls back to the backend's env var.
CLAUDE_CODE_OAUTH_TOKEN (empty) Claude subscription OAuth token. Takes priority over the API key when set.
MODEL claude-haiku-4-5 Claude model ID (e.g. claude-haiku-4-5, claude-sonnet-4-6, claude-opus-4-7).
PERMISSION_MODE bypassPermissions default, acceptEdits, bypassPermissions, plan, or dontAsk.
ALLOWED_TOOLS Read,Write,Edit,Bash,Glob,Grep,WebSearch,WebFetch Comma-separated tools auto-approved without prompting.
WORKDIR_ROOT /tmp/claude-agent-pipe Root directory for per-chat workspaces.
MAX_TURNS 30 Max agent turns per user message. 0 disables the cap.

Auth notes

When both auth methods are present, the OAuth token wins and the API key is unset before invoking the SDK so it can't override.

Per Anthropic's terms: a Claude subscription is for personal use — don't re-offer subscription auth to other end users through a shared Open WebUI deployment. For multi-user setups, use API keys.

License

MIT