MCP Server for Polar AccessLink API - Access your Polar fitness data (exercises, sleep, nightly recharge, daily activity) from Claude
Connect Polar to Claude, Cursor or any other MCP client and it stops being a tab you switch to. MCP Server for Polar AccessLink API - Access your Polar fitness data (exercises, sleep, nightly recharge, daily activity) from Claude. The polar mcp server is what makes that connection.
An MCP (Model Context Protocol) server for the Polar AccessLink API. Connect your Polar fitness data to Claude AI - access workouts, sleep analysis, recovery metrics, heart rate data, and more.
The toolset is worth reading before you wire it up, because it tells you what the integration is really for:
Category — ToolsExercises — get_exercises, get_exerciseSleep — get_sleep, get_sleep_rangeRecovery — get_nightly_recharge, get_nightly_recharge_rangeActivity — get_daily_activity, get_daily_activity_range, get_activity_samples, get_activity_samples_rangeSleepWise — get_sleepwise_alertness, get_sleepwise_circadian_bedtimeBiosensing — get_body_temperature, get_skin_temperature, get_spo2User — get_user_info, get_physical_infoget_user_info — /users/{id}get_physical_info — /users/physical-informationget_exercises — /exercisesget_exercise — /exercises/{id}Because this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.
Configuration is passed through the environment: POLAR_ACCESS_TOKEN, POLAR_CLIENT_ID, POLAR_CLIENT_SECRET. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Polar's toolset — Category, Exercises, Sleep and 11 more — is a fair guide to whether it matches your workflow. It is maintained by nelsonnew; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| Category | Tools |
| Exercises | get_exercises, get_exercise |
| Sleep | get_sleep, get_sleep_range |
| Recovery | get_nightly_recharge, get_nightly_recharge_range |
| Activity | get_daily_activity, get_daily_activity_range, get_activity_samples, get_activity_samples_range |
| SleepWise | get_sleepwise_alertness, get_sleepwise_circadian_bedtime |
| Biosensing | get_body_temperature, get_skin_temperature, get_spo2 |
| User | get_user_info, get_physical_info |
| get_user_info | /users/{id} |
| get_physical_info | /users/physical-information |
| get_exercises | /exercises |
| get_exercise | /exercises/{id} |
| get_sleep | /users/sleep |
| get_nightly_recharge | /users/nightly-recharge |
{
"mcpServers": {
"polar": {
"command": "node",
"args": ["/path/to/polar-mcp-server/dist/index.js"],
"env": {
"POLAR_ACCESS_TOKEN": "your_access_token"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| POLAR_ACCESS_TOKEN | Credential the server authenticates with. | Yes |
| POLAR_CLIENT_ID | Configuration value read at startup. | Optional |
| POLAR_CLIENT_SECRET | Credential the server authenticates with. | Yes |
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