io.github.davidmosiah/polarmcp
polar-mcp-server
Privacy-first unofficial Polar AccessLink v4 MCP server for AI health, sleep and training agents.
alive probed 2026-10-14
37tools
17ktokens in Claude Opus 5.5
18ktokens in Claude Code
8.7 %of a 200k context window
9.6ko200k_base estimate
647 msto initialize
62 msto list tools
- Run it
- npx -y polar-mcp-unofficial@0.3.6 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- polar-mcp-server 0.3.6
- Capabilities
- prompts, resources, tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/davidmosiah/polar-mcp
- Website
- https://wellness.delx.ai/connectors/polar
- Registry
- active, updated 2026-07-13 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| polar_list_nightly_recharge | 415 | 4 % |
| polar_list_sleep_wake_vectors | 414 | 4 % |
| polar_list_continuous_samples | 413 | 4 % |
| polar_list_ppi_samples | 412 | 4 % |
| polar_list_tests | 412 | 4 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.davidmosiah/polarmcp)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.