Polarmcp

Give your AI agent your Polar Nightly Recharge, training load, PPI and HRV data locally. Its 9 documented tools cover polar, summary.

People connecting science & health tools to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-08-15 · ★ 5 · #25 OF 60 MAINTAINED SCIENCE & HEALTH · VERIFIED 2026-08-25

MIT · TypeScript servers · how we verify → /methodology

01 · Install Polarmcp

before you install - you'll need

Set POLAR_CLIENT_ID, POLAR_CLIENT_SECRET, POLAR_REDIRECT_URI, POLAR_SCOPES, POLAR_TOKEN_PATH, POLAR_CACHE_PATH before connecting. POLAR_PRIVACY_MODE, POLAR_CACHE are optional or environment-specific per the README.

Claude Code

claude mcp add davidmosiah-polar-mcp -- npx -y polar-mcp-unofficial

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "davidmosiah-polar-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "polar-mcp-unofficial"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package polar-mcp-unofficial - unscoped; check the name against the project README before installing

registry namespace io.github.davidmosiah is GitHub-verified and matches the repo owner

03 · What Polarmcp can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

An agent gets 9 documented tools spanning polar, summary, including polar_quickstart, polar_connection_status, polar_data_inventory, polar_demo.

The 9 tools it gives your agent

Extracted from the project's README - what polarmcp lets an agent do.

polar_quickstart: - personalized 3-step setup walkthrough that adapts to what's already configured
polar_connection_status: - verify local setup, scopes and readiness before calling Polar
polar_data_inventory: - inventory supported data domains, scopes, privacy modes and recommended first calls without calling Polar APIs.
polar_demo: - synthetic example payloads so agents see the contract before calling the real API
polar_daily_summary: - sleep, activity, Nightly Recharge and training brief for today
polar_weekly_summary: - scorecard, comparison vs prior week, next-week plan
polar_wellness_context: - Nightly Recharge, sleep and training load in the shared wellness_context shape
polar_heart_series: - agent-safe-series/v1 bounded HR from continuous samples (prefer this for agents)
polar_get_route: - GPS coordinates redacted unless raw mode

Latest releases

v0.3.14 · 2026-07-30

exchange_code intent wording, scorecard 100 + CI scorecard gate. npm:

v0.1.2 · 2026-05-05

Initial Polar MCP release · 30 MCP tools + 6 resources + 3 prompts for Polar AccessLink Dynamic API v4. Local-first OAuth with tokens stored in ~/.polar-mcp/. · Coverage · Account, devices, activity, calendar, sleep…

04 · Who maintains Polarmcp

polarmcp is maintained by davidmosiah. We track 30 MCP servers from davidmosiah - 30 actively maintained, 113 combined GitHub stars, oldest repo from Apr 2026. Full record: all servers from davidmosiah.

05 · Facts

repository: github.com/davidmosiah/polar-mcp
website: https://wellness.delx.ai/connectors/polar
category: science & health - ranked #25 of 60 actively-maintained science & health servers as of 2026-08-25.
release cadence: 1 release in the last 90 days (latest 2026-07-30)
registry: io.github.davidmosiah/polarmcp (active, first published 2026-05-05 · 3 versions)
packages: npm:polar-mcp-unofficial

06 · Polarmcp FAQ

Is Polarmcp still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-15 and it shipped 1 release in the last 90 days. We re-verify nightly.

What can Polarmcp do?

An agent gets 9 documented tools spanning polar, summary, including polar_quickstart, polar_connection_status, polar_data_inventory, polar_demo.

How do I install Polarmcp?

Run `npx -y polar-mcp-unofficial`. The README documents 8 environment variables (POLAR_CLIENT_ID, POLAR_CLIENT_SECRET, POLAR_REDIRECT_URI…) to set first. Set POLAR_CLIENT_ID, POLAR_CLIENT_SECRET, POLAR_REDIRECT_URI, POLAR_SCOPES, POLAR_TOKEN_PATH, POLAR_CACHE_PATH before connecting. POLAR_PRIVACY_MODE, POLAR_CACHE are optional or environment-specific per the README. You can also paste the ready-made client config above.

Does Polarmcp run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Polarmcp

Alternatives to Polarmcp

Maintained science & health servers if Polarmcp isn't the fit.

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