oura-mcp

Ask your Oura Ring anything. In ChatGPT or Claude, in any language.

A remote MCP server that connects Oura Ring data to any MCP client. No UI, no app, no model of its own: the assistant you already pay for calls the tools and explains your data in whatever language you speak.

You: how did I sleep this week?

ChatGPT: Your week was uneven, averaging 65/100. Best night was June 29 (77) with strong deep sleep. The rough one was July 2 (47): little REM, low efficiency, and your bedtime drifted way off schedule. The main pattern to fix is sleep timing.

Get started in two clicks: download oura-mcp.mcpb from the latest release and double-click it — Claude Desktop installs the extension, and demo mode works instantly with zero setup (fake sample data, no Oura account needed). Connecting your own ring takes ~5 minutes: Run locally.

Things to try once connected:

Should I train hard today or take it easy?
Compare my sleep on workdays vs the weekend.
Did the late coffee I tagged yesterday show up in my night heart rate?
Какой у меня был пульс сегодня днём?

How it works

flowchart LR
    A["ChatGPT / Claude"] -- "MCP (Streamable HTTP)" --> B["oura-mcp"]
    B -- "REST, read-only" --> C["Oura API v2"]

One small Node.js process, stateless — a fresh MCP server instance per request. The client model picks the right tools, the server returns compact, pre-shaped JSON, the model does the talking. Curious how it's put together and why? See docs/ARCHITECTURE.md.

When you don't need this: if you want dashboards and charts, the Oura app already does that; if you want raw data for scripts, call the Oura API directly. This server exists for one thing: making your ring data conversational in the chat client you already use.

Related MCP server: oura-ring-mcp

Tools

All tools are read-only and marked with readOnlyHint, so ChatGPT does not nag you for confirmation on every call.

Designed for LLMs, not for dashboards

• Task-oriented tools, not 1:1 endpoint wrappers. 18 Oura endpoints grouped into 10 tools that match how people actually ask questions.

• Token-efficient responses. Durations converted to minutes server-side, units baked into field names (deep_min, efficiency_pct), raw time series and internal IDs stripped. A tool response is 0.2–3 KB, not 50.

• response_format: concise | detailed on data-heavy tools. Concise by default, breakdowns on demand.

• Actionable errors. A too-wide heart rate query returns "ask for 3 days or less, or use oura_get_readiness for trends", not a 400.

• Sane defaults. Every tool works with zero arguments (last 7 days).

Requirements

• An Oura Ring with an active Oura subscription (the API returns 403 without one) — or nothing at all for the sandbox demo mode

• Node 22+ or Docker

• 5 minutes to register your own Oura OAuth app (below)

• Only for the remote path (ChatGPT, claude.ai web): any host with public HTTPS — a free-tier VM behind Caddy works fine. Avoid free tiers that sleep between requests: ChatGPT times out on cold starts

Why do I need my own Oura app?

Oura deprecated personal access tokens in December 2025, so an OAuth app is the only supported way to access your data — this is Oura's rule, not this project's. Registering one is free, instant, and needs no review for personal use. It is also the best part of the design: your tokens are issued to your app and live on your server, so your health data never depends on anyone else's infrastructure — including mine.

Run locally (Claude Desktop) — easiest start

No server to deploy: Claude Desktop starts oura-mcp itself as a local process.

Install (two clicks): download oura-mcp.mcpb from the latest release, double-click it, press Install. Done — demo mode works immediately (fake sandbox data, no Oura account), so you can try every tool before any setup. Claude will remind you the numbers are samples.

Connect your real ring (~5 minutes):

1. Create your own Oura app (free, instant, no review) at developer.ouraring.com/applications — set the redirect URI to exactly http://localhost:8888/callback

2. In Claude Desktop: Settings → Extensions → oura-mcp → Configure → paste the app's Client ID and Client Secret (the secret is stored in your OS keychain)

3. Ask Claude a health question — your browser opens the Oura consent page. Approve, ask again, and you're looking at your own data. Tokens stay on your machine (~/.oura-mcp/, chmod 600).

Prefer a config-file setup, or using a different stdio client? The docker route works everywhere:

{
  "mcpServers": {
    "oura": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "ghcr.io/rajskij/oura-mcp:latest", "node", "dist/src/stdio.js"]
    }
  }
}

Ask Claude "how did I sleep this week?" — you'll get answers from Oura's sandbox data, which is exactly how the real thing behaves.

1. Register an OAuth app at developer.ouraring.com/applications (redirect URI http://localhost:8888/callback) and put the credentials in an .env file next to a copy of docker-compose.yml

2. One-time browser consent, saves tokens to ./data: docker compose --profile setup up get-token

3. Point the same config at your credentials and tokens:

{
  "mcpServers": {
    "oura": {
      "command": "docker",
      "args": [
        "run", "-i", "--rm",
        "--env-file", "/absolute/path/to/.env",
        "-v", "/absolute/path/to/data:/app/data",
        "ghcr.io/rajskij/oura-mcp:latest",
        "node", "dist/src/stdio.js"
      ]
    }
  }
}

Running from source instead of Docker: npm install && npm run build, then use "command": "node", "args": ["/path/to/oura-mcp/dist/src/stdio.js"] (with cwd at the repo so data/tokens.json resolves).

Self-hosting (remote: ChatGPT, claude.ai web)

Docker (recommended)

# 1. Register an OAuth app at developer.ouraring.com/applications
#    Redirect URI: http://localhost:8888/callback

# 2. Configure
curl -O https://raw.githubusercontent.com/Rajskij/oura-mcp/main/docker-compose.yml
curl -o .env https://raw.githubusercontent.com/Rajskij/oura-mcp/main/.env.example
# fill in .env: client id/secret, generate MCP_PATH_SECRET (openssl rand -hex 24)

# 3. Connect an Oura account (one-time browser consent on this machine)
docker compose --profile setup up get-token

# 4. Run
docker compose up -d

Keep PORT=3000 in .env (or adjust the compose port mapping to match).

Needs Node 22+.

# 1. Register an OAuth app at developer.ouraring.com/applications
#    Redirect URI: http://localhost:8888/callback

# 2. Configure
cp .env.example .env   # fill in client id/secret, generate MCP_PATH_SECRET

# 3. Connect an Oura account (one-time browser consent)
npm install
npm run get-token

# 4. Run
npm run dev

Want to hack on it without a ring? OURA_SANDBOX=1 npm run dev serves Oura's sandbox data, no account needed.

Connect your chat client

Your MCP endpoint is https://your-host/mcp/<MCP_PATH_SECRET>.

1. Settings → Apps → Advanced settings → enable Developer mode

2. Settings → Apps → Create: name it, paste your MCP endpoint URL, auth = No auth

3. In a conversation, open the + menu → Developer mode → enable the app

Set up on desktop web; the app then works in mobile conversations too.

1. Settings → Connectors → Add custom connector

2. Paste your MCP endpoint URL → Add

Claude connects from Anthropic's cloud, so the server must be publicly reachable (no localhost).

Clients that only speak stdio can use the mcp-remote bridge:

{
  "mcpServers": {
    "oura": {
      "command": "npx",
      "args": ["mcp-remote", "https://your-host/mcp/<MCP_PATH_SECRET>"]
    }
  }
}

Configuration

Troubleshooting

• 403 from every tool — no active Oura subscription on the connected account. The API requires one.

• 401 / "token expired, needs a reconnect" — the stored refresh token was lost or invalidated (Oura rotates it on every refresh; never run two copies of the server against the same data/tokens.json). Re-run get-token.

• 404 when connecting — the path secret in the URL doesn't match MCP_PATH_SECRET. Copy the full endpoint URL again.

• ChatGPT: "Error creating connector" / timeouts — your host is asleep. ChatGPT aborts on cold starts (~60 s budget); use an always-on host.

• resilience / vo2_max come back empty — Oura computes these after ~2 weeks of wear / a fitness test; the tools work, the account has no data yet.

Security & privacy

• OAuth tokens never leave your server; the MCP client only sees tool results.

• Read-only scopes; the Oura API has no write endpoints for health data, and neither does this server.

• Your email is never returned by any tool.

• The optional usage log records tool names and timings only, never health values.

• Prompt injection: treat health conversations as sensitive. If a chat mixes this connector with untrusted content (web browsing, pasted documents), a malicious page can try to steer the model into calling tools and echoing your data into a reply it controls. The blast radius here is bounded — read-only tools, your own data — but the cleanest habit is simple: ask health questions in chats that aren't also browsing the web.

Status & roadmap

Self-hosted and single-user by design: your data flows directly between your server and Oura, which is also what Oura's API terms expect from personal integrations. It runs my household's ring today.

Coming next: a one-click Claude Desktop extension (.mcpb) and a free-tier Cloudflare Workers deploy button — same server, no VM needed. Open an issue if you want one of these sooner.

License

MIT