io.github.mrfentmen/chess-mcp
chess-mcp
Is the io.github.mrfentmen/chess-mcp MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.
Use this MCP server to chess.com. Player profiles, ratings, game archives, leaderboards, and...
alive probed 2026-11-14 · unchanged since 2026-10-30
- Run it
- npx -y @mrfentmen/chess-mcp@1.0.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- chess-mcp 1.0.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- <0.1 % of a 1M context window
- Count
- 762 tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 817. The o200k_base estimate is 420. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/mrfentmen/chess-mcp
- Registry
- active, updated 2026-09-21 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.81×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| get_player_games | 256 | 141 | 34 % |
| get_titled_players | 171 | 94 | 22 % |
| get_player | 129 | 71 | 17 % |
| get_player_stats | 118 | 65 | 15 % |
| get_leaderboards | 89 | 49 | 12 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- io.github.mrfentmen/checksum-mcp · alive
- io.github.mrfentmen/chembl-mcp · alive
- io.github.mrfentmen/chempirical-mcp · alive
- io.github.mrfentmen/chess-com-mcp · alive
- io.github.mrfentmen/chesscom-mcp · alive
- io.github.mrfentmen/chicago-mcp · alive
- io.github.mrfentmen/chmi-mcp · alive
- io.github.mrfentmen/chocolatey-mcp · alive
Servers that mention chess.
- Chess Results ai.b77/chess-results · needs auth
- BetterChess co.betterchess/betterchess · alive
- Catalogue APP24, formations d'échecs en français com.apprendre-les-echecs-24h/catalogue-echecs-fr · alive
- Bounty Agent Arena com.brelsfordsoftware/agent-bounty-jobs · alive
- Chessigma com.chessigma/chessigma · alive
- Naibul — agent-only board-game hall com.naibul/board-game-hall · alive
- PlyMove com.plymove/mcp · needs auth
- com.x402supply/chess-eval · alive
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.