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Open WebUI Pipe: run Claude Code's agent loop inside chats via the Claude Agent SDK
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Thomas Friedel 4158af9ebe feat(sandbox): route Anthropic traffic through credential-injecting proxy 
Adds a Caddy-based reverse proxy (`anthropic-proxy/`) that forwards
/v1/* to api.anthropic.com with the real credential injected at the
proxy, not in the sandbox. The sandbox now only sees
ANTHROPIC_BASE_URL=http://anthropic-proxy:8081 and a placeholder
ANTHROPIC_AUTH_TOKEN, so `env` / `cat /proc/self/environ` yield nothing.

Proxy auth mode:
- CLAUDE_CODE_OAUTH_TOKEN → `Authorization: Bearer` + appends
  `oauth-2025-04-20` to anthropic-beta (required for subscription OAuth
  on /v1/messages).
- ANTHROPIC_API_KEY → `x-api-key`.

Pipe changes:
- Drop ANTHROPIC_API_KEY / CLAUDE_CODE_OAUTH_TOKEN valves.
- Add ANTHROPIC_BASE_URL valve (defaults to the compose service DNS).
- Replace credential env injection with ANTHROPIC_AUTH_TOKEN=proxied.

Closes acceptance criteria for issue #6.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
 		2026-04-18 21:59:59 +02:00
anthropic-proxy feat(sandbox): route Anthropic traffic through credential-injecting proxy 2026-04-18 21:59:59 +02:00
sandbox feat: sandboxed Claude Code pipe via open-terminal 2026-04-18 21:02:01 +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 feat(sandbox): route Anthropic traffic through credential-injecting proxy 2026-04-18 21:59:59 +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