oura-mcp

The Oura v2 API as an MCP server. All 19 collections, three tools, no dependencies beyond the MCP SDK.

What sets it apart: Oura under-delivers without saying so, in four distinct ways, and this server corrects all four. That sounds minor and it is the whole point — see below.

The problem, measured

Oura does not return errors when it can't give you what you asked for. It returns something different, shaped like a correct response. These are the four we found by measuring against the real API on 9 August 2026:

1. Skip the pagination and you get a fraction

{ "data": [ ... ], "next_token": "eyJ0eXAiOi..." }

If next_token comes back and you don't follow it, you receive the first page and nothing warns you. One local day of heartrate — one person, one ring, 24 hours — is 1,231 samples across 2 pages. A client that doesn't paginate gets 1,000 of 1,231: 81%, looking complete. A month is ~37,000.

2. Asking for a single day returned zero records

end_date does not behave the same across collections:

And on top of that, workout filters by UTC date while reporting day in local time: at -06:00, asking for July 16–18 returned records from the 15th and 16th — before the requested start.

Here the range is inclusive on both ends, always. Two extra days are requested on each side and then trimmed, which is correct whichever way a given collection behaves — and stays correct when Oura changes it.

3. latest=true is ignored where it doesn't apply

Only heartrate and ring_battery_level honor it. In the other seventeen Oura doesn't error: it returns the entire collection. You ask for the latest record, you get ten, and you believe it's one. Here it's rejected before the request goes out.

4. A field that doesn't exist is silently ignored

fields=does_not_exist returns the complete record — the projection never happens — and fields=score,does_not_exist applies the good one and drops the bad one without a word. Here, fields that never appeared are reported under campos_ignorados.

The pattern is always the same: you ask for one thing, you get another, and nothing warns you. That's why this package would rather shout than quietly under-deliver.

Installation

Try it with no credentials

pip install mcp-oura
OURA_SANDBOX=1 oura-mcp --check

The sandbox is official — it's in Oura's OpenAPI spec, with 34 mirror routes — and serves synthetic data without authentication. 18 of the 19 collections work there: personal_info doesn't, which makes sense, since it's the one returning email, age, weight and height.

This is the right order: first you watch the server work and learn the shape of the data, then you go get credentials.

With your own data

Oura stopped issuing Personal Access Tokens in December 2025. Existing ones still work; new ones can't be created. So there are two paths:

a) OAuth2 — the one that works today. Register an application at cloud.ouraring.com/oauth/applications with the redirect http://localhost:9876/callback/ — the trailing slash is required, the portal rejects the other form with invalid_redirect_uri.

export OURA_CLIENT_ID="…"
export OURA_CLIENT_SECRET="…"
oura-mcp --authorize             # opens the browser, waits for the callback
oura-mcp --authorize --manual    # headless machines: you paste the URL back

The token is stored in ~/.config/oura-mcp/credenciales.json with mode 600 — or in the system keychain if you happen to have keyring installed, which is not a dependency of this package — and refreshes itself. oura-mcp --forget erases it.

b) A personal token, if you already had one.

export OURA_PAT="your-token"
oura-mcp --check

--check is the self-check: it reports which credential you're using, which scopes were granted and how long the access has left, without returning the token or a single health value. It reports the token's length, never the token. Error messages get copied and pasted into chats and issues; they have no business carrying anything else.

Connecting it to Claude Code

With the package installed (pip install mcp-oura):

claude mcp add -s user oura --env OURA_SANDBOX=1 -- oura-mcp

Drop OURA_SANDBOX once you've run oura-mcp --authorize.

If you use uv, nothing needs to be installed permanently:

claude mcp add -s user oura --env OURA_SANDBOX=1 -- uvx --from mcp-oura oura-mcp

The --from is required because the distribution is named mcp-oura and the executable oura-mcp. (This needs uv; without it the command above fails with "command not found", and pip install is the path to take.)

As a Claude Code plugin:

claude plugin marketplace add proscar87/oura-mcp
claude plugin install oura@oura-mcp

Connecting it to Claude Desktop

One click: download oura-mcp.mcpb from the releases page and double-click it. Claude Desktop installs it — no terminal, no JSON, no Python. It ships with sample data turned on, so it works before you have any credential at all.

When you want your own data, just ask it for something: it opens Oura's authorization page through Claude, waits for the callback, and retries what you asked. No terminal. That works because MCP has a mode for precisely this — URL elicitation — and the client does the opening.

The one thing Oura still requires is that every application be registered, so you need a client ID and secret from cloud.ouraring.com/oauth/applications once. That's Oura's rule, not this server's. oura-mcp --authorize remains for terminal users and for clients that can't show a URL.

Or by hand, in ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "oura": {
      "command": "/full/path/to/oura-mcp",
      "env": { "OURA_SANDBOX": "1" }
    }
  }
}

which oura-mcp gives you the full path. Claude Desktop does not inherit your terminal's PATH, so a bare name there fails silently — one of the most common mistakes when configuring an MCP server.

The tools

Three, not nineteen. A server with one tool per collection forces the model to pick among 19 similar names before knowing what any of them contain. Here the collection is a parameter and the catalog is consulted when needed.

All three declare themselves read-only, and that isn't a promise: there is no POST, PUT or DELETE anywhere in the package, and a test reads the source to keep it that way.

oura_query parameters

And what the response tells you when something didn't come out clean: truncado with continuar_desde to resume, ciclo_de_paginacion if Oura repeats a token, campos_ignorados, descartados_fuera_de_rango, columnas_desiguales, vacio when a query comes back empty, and respuesta_grande when what's returned is heavy enough to matter.

That last one comes from measuring: 30 days of daily_activity is 252,000 characters, and 87% of it is a single field, met, a per-minute MET series. Asking for three columns with campos brings those same 30 days down to 5,000 characters — 99% less. The server doesn't trim on its own — that would be under-delivering — but it does say what's heavy and how to ask for less.

(Parameter names are in Spanish because the codebase is. They're stable, they're documented here, and the tool descriptions the model reads carry the same information.)

What this server does NOT do

It doesn't analyze. No correlations, no anomaly detection, no period comparison — which is exactly where other servers place their value.

The reason: an average computed in here reaches the model as a number without its method. Across nine years of real data, three out of four changes between two consecutive measurements fall within the metric's own normal oscillation. A server that hands over "your HRV is up 12%" without saying how much that metric swings on its own isn't informing you: it's manufacturing a signal.

Here you get the data. The analysis belongs where the method can be cited — for instance with cotejo, which draws exactly that distinction for blood biomarkers.

The 19 collections

Daily summaries — daily_sleep, daily_readiness, daily_activity, daily_stress, daily_spo2, daily_resilience, daily_cardiovascular_age, vO2_max

The detail the scores hide — sleep (stages, HRV, temperature, latency), sleep_time, workout, session, rest_mode_period, tag, enhanced_tag

High resolution — heartrate, ring_battery_level

No range — personal_info, ring_configuration

Date-range collections use YYYY-MM-DD. heartrate and ring_battery_level use ISO 8601 with time.

Other Oura MCP servers

There are several as of August 2026, and it's worth being precise about the differences. benngermin/oura-mcp paginates properly, with a resumable cursor. daveremy/oura-mcp shipped the end_date fix the same week we did. davidmosiah/oura-mcp has the most complete MCP surface. Pagination no longer distinguishes anyone.

What does, as far as we could verify: workout's UTC skew isn't documented in any of them, nor is rejecting latest where Oura ignores it, nor warning about fields that were never applied. And none of them treats not analyzing as a stated position.

Privacy Policy

This section exists because the Claude connectors directory requires one. It is short because there is little to describe: the server runs on your machine and talks to a single service, the Oura API.

What is collected. Nothing, by us. The health data you request goes from the Oura API to your MCP client and passes through no server of ours, because there isn't one.

What is stored, and where. Only your credentials, and only on your machine:

No health data is written to disk. There is no cache.

Who it is shared with. No one. The only outbound connection is to api.ouraring.com, with your token, to fetch what you asked for. Oura's use of your data is governed by their privacy policy, not by this one.

How long it is retained. Credentials, until you delete them: oura-mcp --forget, or by removing the file. Health data isn't retained at all — it lives in the response and that's it.

Diagnostics expose nothing. oura_check reports the token's length, never the token; the profile's field names, never their values. The token is wrapped in a type that won't print even in a stack trace.

Contact. Repository issues.

A note on language

The code, its comments and the internal documents (AGENTS.md, ROADMAP.md, CHANGELOG.md) are in Spanish, and so are the tool parameters. This README and llms.txt are in English because they're what a stranger — or a directory reviewer — reads first.

License

MIT.

mcp-name: io.github.proscar87/oura-mcp