
Gives Claude or any MCP client a full Ubuntu sandbox running in Docker with persistent bash, Playwright browser streaming, and document generation skills. Each chat gets an isolated container where the LLM can execute Python or Node, install packages, create Word/Excel/PowerPoint files via built-in skills, and even spawn Claude Code as a sub-agent in an interactive terminal. The live browser streams over CDP so you watch the AI navigate in real time. Designed for multi-user production deployments where you need actual code execution, not just simulated output. Works with Open WebUI out of the box or plug the MCP endpoint into Claude Desktop, n8n, or your own integration.
MCP server that gives any LLM its own computer — managed Docker workspaces with live browser, terminal, code execution, document skills, and autonomous sub-agents. Self-hosted, open-source, pluggable into any model.
ARCHIVED. This repository is no longer developed or maintained. It receives no fixes, no security updates and no dependency updates, and issues and pull requests are closed. Do not run it in production.
Open Computer Use was a proof of concept for giving an LLM a real computer. Its successor is Wide Moat: Open WebUI with Open Terminal, a browser, and a Kubernetes sandbox isolated with gVisor, with ingress sidecars and egress through a MITM proxy. The isolation and credential-handling problems listed under Known limitations are addressed in that architecture, not in this codebase. Try it at ai.lab.widemoat.ai.
The code stays available under FSL-1.1-Apache-2.0: use it, fork it, self-host it. Each release converts to Apache-2.0 two years after publication.

An MCP server that gives any LLM a fully-equipped Ubuntu sandbox with isolated Docker containers. Think of it as your AI's computer — it can do everything a developer can do:
Built for production multi-user deployments. Tested with 1,000+ MAU. Each chat session runs in its own isolated Docker container — the AI can install packages, create files, run servers, and nothing leaks between users. Works seamlessly across MCP clients: start with Open WebUI today, switch to Claude Desktop or n8n tomorrow — same backend, no migration.
| Feature | Open Computer Use | Claude.ai (Claude Code web) | open-terminal | OpenAI Operator |
|---|---|---|---|---|
| Self-hosted | Yes | No | Yes | No |
| Any LLM | Yes (OpenAI-compatible) | Claude only | Any (via Open WebUI) | GPT only |
| Code execution | Full Linux sandbox | Sandbox (Claude Code web) | Sandbox / bare metal | No |
| Live browser | CDP streaming (shared, interactive) | Screenshot-based | No | Screenshot-based |
| Terminal + Claude Code | ttyd + tmux + Claude Code CLI | Claude Code web (built-in) | PTY + WebSocket | N/A |
| Skills system | 13 built-in (auto-injected) + custom | Built-in skills + custom instructions | Open WebUI native (text-only) | N/A |
| Container isolation | Docker (runc), per chat | Docker (gVisor) | Shared container (OS-level users) | N/A |
Works with any MCP-compatible client: Open WebUI, Claude Desktop, LiteLLM, n8n, or your own integration. See docs/COMPARISON.md for a detailed comparison with alternatives.








See docs/FEATURES.md for architecture details and docs/SCREENSHOTS.md for all screenshots.
Pro tip: Create skills with Claude Code in the terminal, then use them with any model in the chat. Skills are model-agnostic — write once, use everywhere.
Multi-CLI sub-agent runtime (v0.9.2.1+): The sub-agent dispatch supports Claude Code (default), OpenAI Codex, and OpenCode (with OpenRouter / qwen / DeepSeek / 75+ providers). Flip
SUBAGENT_CLI=claude|codex|opencodein.env— see docs/multi-cli.md for the worked OpenCode + qwen3-coder + OpenRouter recipe.
docs/future-architecture/ holds design notes for a Kubernetes architecture that was not built in this repository. Docker Compose is the only path this code supports.
| Path | URL | What you need | Best for |
|---|---|---|---|
| Free online demo — Open WebUI + Computer Use, models included | ai.lab.widemoat.ai | GitHub or Google sign-in | Trying it end-to-end in 30 seconds |
| Self-host | Quick Start below | Docker, ~15 min first build | Full control, air-gapped, heavy use |
OAuth only — no email/password, no SMS. On ai.lab.widemoat.ai models are bundled as a free convenience. The hosted MCP endpoint is offline; see docs/CLOUD.md.
git clone https://github.com/Wide-Moat/open-computer-use.git
cd open-computer-use
cp .env.example .env
# Edit .env — set OPENAI_API_KEY (or any OpenAI-compatible provider)
# 1. Start Computer Use Server (builds workspace image on first run, ~15 min)
docker compose up --build
# 2. Start Open WebUI (in another terminal)
docker compose -f docker-compose.webui.yml up --build
Open http://localhost:3000 — Open WebUI with Computer Use ready to go.
Note: Two separate docker-compose files:
docker-compose.yml(Computer Use Server) anddocker-compose.webui.yml(Open WebUI). They communicate vialocalhost:8081. This mirrors real deployments where the server and UI run on different hosts.
After adding a model in Open WebUI, go to Model Settings and set:
| Setting | Value | Why |
|---|---|---|
| Function Calling | Native | Required for Computer Use tools to work |
| Stream Chat Response | On | Enables real-time output streaming |
Without Function Calling: Native, the model won't invoke Computer Use tools.
| Category | Tools |
|---|---|
| Languages | Python 3.12, Node.js 22, Java 21, Bun |
| Documents | LibreOffice, Pandoc, python-docx, python-pptx, openpyxl |
| pypdf, pdf-lib, reportlab, tabula-py, ghostscript | |
| Images | Pillow, OpenCV, ImageMagick, sharp, librsvg |
| Web | Playwright (Chromium), Mermaid CLI |
| AI | Claude Code CLI, Playwright MCP |
| OCR | Tesseract (configurable languages) |
| Media | FFmpeg |
| Diagrams | Graphviz, Mermaid |
| Dev | TypeScript, tsx, git |
13 built-in public skills + 14 examples:
| Skill | Description |
|---|---|
| pptx | Create/edit PowerPoint presentations with html2pptx |
| docx | Create/edit Word documents with tracked changes |
| xlsx | Create/edit Excel spreadsheets with formulas |
| Create, fill forms, extract, merge PDFs | |
| sub-agent | Delegate complex tasks to Claude Code |
| playwright-cli | Browser automation and web scraping |
| describe-image | Vision API image analysis |
| frontend-design | Build production-grade UIs |
| webapp-testing | Test web applications with Playwright |
| doc-coauthoring | Structured document co-authoring workflow |
| test-driven-development | TDD methodology enforcement |
| skill-creator | Create custom skills |
| gitlab-explorer | Explore GitLab repositories |
14 example skills: web-artifacts-builder, copy-editing, social-content, canvas-design, algorithmic-art, theme-factory, mcp-builder, and more.
See docs/SKILLS.md for details.
The server speaks standard MCP over Streamable HTTP. Point any MCP client at your own deployment.
http://localhost:8081/mcp. Quick sanity check:
curl -X POST http://localhost:8081/mcp \
-H "Content-Type: application/json" \
-H "X-Chat-Id: test" \
-d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"test","version":"1.0"}}}'
Full self-host integration guide (LiteLLM, Claude Desktop, custom clients): docs/MCP.md. The per-chat system prompt rides six redundant MCP-native channels (tool descriptions, /home/assistant/README.md in the sandbox, InitializeResult.instructions, resources/list for uploaded files, plus an HTTP /system-prompt endpoint for legacy integrations) — full map in docs/system-prompt.md.All settings via .env:
| Variable | Default | Description |
|---|---|---|
OPENAI_API_KEY | — | LLM API key (any OpenAI-compatible) |
OPENAI_API_BASE_URL | — | Custom API base URL (OpenRouter, etc.) |
MCP_API_KEY | — | Bearer token for MCP endpoint |
DOCKER_IMAGE | open-computer-use:latest | Sandbox container image |
COMMAND_TIMEOUT | 120 | Bash tool timeout (seconds) |
SUB_AGENT_TIMEOUT | 3600 | Sub-agent timeout (seconds) |
SINGLE_USER_MODE | — | true = one container, no chat ID needed; false = require X-Chat-Id; unset = lenient |
PUBLIC_BASE_URL | http://computer-use-server:8081 | Browser-reachable URL of the Computer Use server. Baked into /system-prompt and returned to the Open WebUI filter in the X-Public-Base-URL response header — single source of truth for the public URL. Open WebUI filter URL requirements. |
CHAT_RESPONSE_MAX_TOOL_CALL_ITERATIONS, ORCHESTRATOR_URL, TOOL_RESULT_MAX_CHARS, TOOL_RESULT_PREVIEW_CHARS | — | Settings on the open-webui container (not CU-server). Required when embedding — see Required setup when embedding Open WebUI. |
POSTGRES_PASSWORD | openwebui | PostgreSQL password |
VISION_API_KEY | — | Vision API key (for describe-image) |
ANTHROPIC_AUTH_TOKEN | — | Anthropic key (for Claude Code sub-agent) |
MCP_TOKENS_URL | — | Settings Wrapper URL (optional, see below) |
MCP_TOKENS_API_KEY | — | Settings Wrapper auth key |
By default, all 13 built-in skills are available to everyone. For per-user skill access and custom skills, deploy the Settings Wrapper — see settings-wrapper/README.md.
Personal Access Tokens (PATs): The settings wrapper can also store encrypted per-user PATs for external services (GitLab, Confluence, Jira, etc.). The server fetches them by user email and injects into the sandbox — so each user's AI has access to their repos/docs without sharing credentials. The server-side code for token injection is implemented (docker_manager.py), but the Open WebUI tool does not pass the required headers, and that will not be added.
The Computer Use Server speaks standard MCP over Streamable HTTP — any MCP-compatible client can connect. Open WebUI is the primary tested frontend, but not the only option.
| Client | Self-hosted URL | Status |
|---|---|---|
| Open WebUI | Docker Compose stack included, auto-configured | Tested in production |
| Claude Desktop | http://localhost:8081/mcp — see docs/MCP.md | Works |
| n8n | MCP Tool node → http://computer-use-server:8081/mcp | Works |
| LiteLLM | MCP proxy config — see docs/MCP.md | Works |
| Custom client | Any HTTP client with MCP JSON-RPC — see curl examples in docs/MCP.md | Works |
Open WebUI is an extensible, self-hosted AI interface. We use it as the primary frontend because it supports tool calling, function filters, and artifacts — everything needed for Computer Use.
Compatibility: This build is strictly built and verified against Open WebUI 0.11.0. The first 3 segments of our build version (v0.11.0.X) always match the Open WebUI base version it targets. If you run a different Open WebUI version, pick the Open Computer Use build whose first 3 version segments match yours — e.g., for Open WebUI 0.8.12 use a v0.8.12.Y build.
Why not a fork? Computer Use itself is not a fork: it bolts on through the official plugin API — tools and functions — so stock Open WebUI works with just the tool and filter installed. (A separate fork does exist for changes that cannot be expressed as plugins, but nothing in this repository depends on it.)
Running Claude Code through a corporate gateway (LiteLLM, Azure, Bedrock)? See docs/claude-code-gateway.md for the three-path operator recipe.
The openwebui/ directory contains:
On first docker compose up, the init script automatically:
admin@open-computer-use.dev / admin)POST /api/v1/tools/createPOST /api/v1/functions/createORCHESTRATOR_URL=http://computer-use-server:8081 — internal URL for server↔server, seeded into both Valves)group:* and user:* wildcards) — so non-admin users see the tool in their workspace/toggle and /toggle/global) — active-but-not-global is silently inert and a common manual-setup mistake{function_calling: "native", stream_response: true} into DEFAULT_MODEL_PARAMS via POST /api/v1/configs/models — every model gets the right defaults without per-model Advanced Params clicksA marker file (.computer-use-initialized) prevents re-running on subsequent starts.
Note: Open WebUI doesn't support pre-installed tools from the filesystem — they must be loaded via the REST API. The init script automates this so you don't have to do it manually.
If you run Open WebUI separately, you need to manually:
openwebui/tools/computer_use_tools.pyai_computer_use (required for filter to work)ORCHESTRATOR_URL = internal URL of your Computer Use Server (http://computer-use-server:8081 for Docker compose)group:* and user:* wildcards) — otherwise only your admin account sees the tool and non-admin users get an empty tool list with no erroropenwebui/functions/computer_link_filter.pyNative and Stream Chat Response = On. Or set them globally once in Admin → Settings → Models → Advanced Params (function_calling: native, stream_response: true) — that becomes DEFAULT_MODEL_PARAMS for every model.The docker-compose stack handles all of this automatically.
If you run Open WebUI outside the stock docker-compose.webui.yml — your own compose, Kubernetes, Portainer, or a downstream repo — there are four traps that will silently break Computer Use. All four hit us in production. Check in this order.
Install the tool and the filter and Computer Use works against
ghcr.io/open-webui/open-webui as published. Nothing here has to be rebuilt.
This used to be the opposite: the repository carried eight patch scripts and a Dockerfile that applied them to an already-built image, and pulling upstream silently skipped all of them. Those patches are gone. Three of the problems they addressed have since been fixed upstream; the rest live as source commits in a fork, which is a separate concern from running this integration.
Preview URL detection needs no build-time host configuration either — the iframe origin
is read from the URL the model wrote, which comes from the server's PUBLIC_BASE_URL.
v4.0.0: the old "three FILE_SERVER_URL places that must match" footgun is gone. There are now only two places and two distinct roles — public (browser-reachable) vs internal (Docker-local). The COMPUTER_USE_SERVER_URL build-arg was removed in v0.9.2.0 — fix_preview_url_detection is now host-agnostic (see Step 2).
| Where | Role | Who reads it | Prod (with domain) | Local dev (Docker Desktop) |
|---|---|---|---|---|
PUBLIC_BASE_URL env on the computer-use-server container (docker-compose.yml / .env) | PUBLIC — baked into /system-prompt links + returned to filter via X-Public-Base-URL response header | Server (single source of truth for public URL) | https://cu.your-domain.com | http://localhost:8081 |
Filter + Tool Valves ORCHESTRATOR_URL (seeded by init.sh from ORCHESTRATOR_URL env on the open-webui container) | INTERNAL — server↔server fetch of /system-prompt; MCP tools/call forwarding | Filter and tool (Docker network) | http://computer-use-server:8081 | http://computer-use-server:8081 |
⚠️ Do NOT point ORCHESTRATOR_URL at your public domain. It technically works, but every MCP request then goes browser→CDN→Traefik→container. Any hiccup in that chain kills the stream mid-tool-call and the user sees MCP call failed: Session terminated. Stay inside the Docker network.
The filter no longer has a public-URL Valve at all — it reads the public URL from the server's X-Public-Base-URL response header and caches it alongside the prompt. One public knob, one internal knob.
See also docs/openwebui-filter.md.
open-webui containerCopy-paste into your downstream compose environment: block:
services:
open-webui:
environment:
# --- Computer Use required env vars (read by build-time patches) ---
- CHAT_RESPONSE_MAX_TOOL_CALL_ITERATIONS=200
- TOOL_RESULT_MAX_CHARS=50000
- TOOL_RESULT_PREVIEW_CHARS=2000
# Internal URL of the Computer Use server — seeded by init.sh into both
# Tool and Filter Valves, and read by the fix_large_tool_results patch.
# Same Docker network: use the service DNS name.
- ORCHESTRATOR_URL=http://computer-use-server:8081
| Variable | Default if unset | Effect when correctly set |
|---|---|---|
CHAT_RESPONSE_MAX_TOOL_CALL_ITERATIONS | 256 (upstream) | Tool-call cap per turn; stock repo sets 200, -1 disables the cap. Open WebUI reads the pre-0.10 name CHAT_RESPONSE_MAX_TOOL_CALL_RETRIES as a fallback. |
TOOL_RESULT_MAX_CHARS | 50000 (patch built-in) | Truncation threshold above which a tool result is truncated or uploaded. 0 disables. |
TOOL_RESULT_PREVIEW_CHARS | 2000 (patch built-in) | Preview size the model sees after truncation or upload. |
ORCHESTRATOR_URL | empty | Seeded into both Tool and Filter Valves by init.sh, and read by fix_large_tool_results patch as the upload target. If empty, oversized results are silently truncated — the model loses the data. |
Note: the last three are no-ops if the image is upstream ghcr.io — they need
fix_large_tool_resultsfrom Step 1.
Open WebUI has two separate switches for each function (is_active and is_global) and two required grants for each tool (group:* + user:*). The stock init.sh does this for you; manual / custom deployments commonly miss one side and then spend hours wondering why "everything is installed but nothing works."
| Resource | What to flip | UI path | Endpoint | Why |
|---|---|---|---|---|
Filter computer_use_filter | is_active = true AND is_global = true | Admin → Functions → computer_use_filter → toggle Active + toggle Global | POST /api/v1/functions/id/computer_use_filter/toggle + .../toggle/global | is_active only loads the function; is_global actually applies it to every chat. Active-but-not-global is silently inert with no log line. |
Tool ai_computer_use | access_grants for group:* AND user:*, permission: read | Workspace → Tools → ai_computer_use → ⋯ → Share → Public | POST /api/v1/tools/id/ai_computer_use/access/update with {"access_grants":[{"principal_type":"group","principal_id":"*","permission":"read"},{"principal_type":"user","principal_id":"*","permission":"read"}]} | Without grants, only the admin account that created the tool sees it. Non-admin users get an empty tool list and no error. The UI "Public" toggle writes both wildcards; writing only one leaves the tool visible to some users and invisible to others depending on Open WebUI version. |
Verify against the database (Postgres used by the stock stack; see docker-compose.webui.yml:53):
# Filter flags — expect (t, t):
docker exec <postgres-container> psql -U openwebui -d openwebui -c \
"SELECT is_active, is_global FROM function WHERE id='computer_use_filter';"
# Tool grants — expect TWO rows (group|* and user|*, both 'read'):
docker exec <postgres-container> psql -U openwebui -d openwebui -c \
"SELECT principal_type, principal_id, permission FROM access_grant WHERE resource_id='ai_computer_use';"
For SQLite-backed Open WebUI deployments, swap psql for sqlite3 /app/backend/data/webui.db with the same SQL.
# 1. Env vars reached the container:
docker exec open-webui env | grep -E 'CHAT_RESPONSE_MAX_TOOL_CALL_ITERATIONS|TOOL_RESULT_|ORCHESTRATOR_URL'
# 4. Tool+Filter Valve (Session-terminated trap) — Admin UI is simplest:
# Workspace → Tools → ai_computer_use → Valves → ORCHESTRATOR_URL
# Admin → Functions → computer_link_filter → Valves → ORCHESTRATOR_URL
# → both must be http://computer-use-server:8081 (internal URL, Docker service DNS),
# NOT your public domain.
# 5. Server env (baked into system prompt AND returned to filter via header):
docker exec computer-use-server env | grep ^PUBLIC_BASE_URL=
# → must be a URL your browser can reach (e.g. http://localhost:8081 for local dev).
# 7. Filter is ACTIVE *and* GLOBAL (see Step 5):
docker exec <postgres-container> psql -U openwebui -d openwebui -c \
"SELECT is_active, is_global FROM function WHERE id='computer_use_filter';"
# → expect (t, t). Two 't's, not one.
# 8. Tool is public-read with both wildcards (see Step 5):
docker exec <postgres-container> psql -U openwebui -d openwebui -c \
"SELECT principal_type, principal_id, permission FROM access_grant WHERE resource_id='ai_computer_use';"
# → expect TWO rows: (group, *, read) and (user, *, read).
After rebuilding the image, do a hard reload in the browser (Cmd+Shift+R / Ctrl+Shift+R). Otherwise it keeps the old cached JS chunks and you'll think the fix didn't work.
| Symptom | Step |
|---|---|
HTML artifact renders as raw <iframe ...> text in chat | 1 (upstream image, fix_artifacts_auto_show missing) |
| Preview iframe auto-insertion doesn't happen for file links | 1 (fix_preview_url_detection missing) or PUBLIC_BASE_URL unreachable from browser |
MCP call failed: Session terminated on every tool call | 3 (tool Valve points at public domain) |
| Tool loop cuts off early; banner "Model temporarily unavailable" | 4 (CHAT_RESPONSE_MAX_TOOL_CALL_ITERATIONS not set) |
Large tool outputs silently ...(truncated); model makes wrong decisions | 4 (ORCHESTRATOR_URL not set or unreachable) OR 1 (fix_large_tool_results missing) |
| Tool-loop errors show raw Python exception | 1 (fix_tool_loop_errors missing) |
| Tool list is empty for non-admin users (admin sees it) | 5 (tool missing access_grants — not public-read) |
| Filter looks "Active" in UI but preview iframe / archive button never appear | 5 (filter is_global=false — only is_active=true was flipped) |
| File links in chat go to 404 / white screen | PUBLIC_BASE_URL on the server doesn't match what the browser can reach — see docs/openwebui-filter.md |
| New behavior didn't appear even after rebuild | Browser cached old JS — hard reload |
Production tested with 1000+ users on Open WebUI in a self-hosted environment. It is no longer maintained; the unfixed items are listed below.
.env for production./files/{chat_id}/, /api/outputs/{chat_id}, /browser/{chat_id}/, /terminal/{chat_id}/ — accessible to anyone who knows the chat ID. Chat IDs are UUIDs (hard to guess but not a real security boundary).MCP_API_KEY. User identity (X-User-Email) is passed by the client but not verified server-side.admin@open-computer-use.dev / admin — change immediately in multi-user setups.These will not be addressed in this repository:
# Build workspace image locally
docker build --platform linux/amd64 -t open-computer-use:latest .
# Run tests
./tests/test-docker-image.sh open-computer-use:latest
./tests/test-no-corporate.sh
./tests/test-project-structure.sh
# Build and run full stack
docker compose up --build
The repository is archived and accepts no contributions. See CONTRIBUTING.md.
This project uses a multi-license model:
computer-use-server/, openwebui/, settings-wrapper/, Docker configs): Functional Source License, Version 1.1, Apache 2.0 Future License (FSL-1.1-Apache-2.0). Free to use, modify, fork, redistribute, and self-host internally. Each release automatically converts to Apache 2.0 two years after publication. Offering a hosted or embedded service that competes with our paid version(s) requires a commercial agreement.skills/public/describe-image, skills/public/sub-agent): MITAttribution required: include "Open Computer Use" and a link to this repository.
See NOTICE for details. For third-party dependency licenses (PyMuPDF AGPL, Anthropic Skill License, Apache 2.0 bundles, etc.), see THIRD-PARTY-LICENSES.md.