io.github.bugsbuny243/koschei
Koschei
Is the Koschei MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-13.
Run agent-written code under a capability policy: see what a program can touch before it runs.
alive probed 2026-11-14 · unchanged since 2026-11-13
- Run it
- uvx koschei-lang@0.14.0 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- koschei 0.14.0
- Capabilities
- tools
- Instructions
- 226 characters
- Of a 1M window
- <0.1 % of a 1M context window
- Count
- 436 tokens in Claude Opus 5.5, exact, measured 2026-11-11. With the Claude Code prefix mcp__…__ on each tool name: 460. The o200k_base estimate is 273. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/bugsbuny243/koschei-lang
- Website
- https://koschei.dev/agents
- Registry
- active, updated 2026-11-13 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.60×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| koschei_run | 182 | 114 | 42 % |
| koschei_check | 176 | 110 | 40 % |
| koschei_guide | 78 | 49 | 18 % |
Compare this server with others.
More servers
Other registry entries on pypi.org, the ones next to this name; all of them.
- io.github.brunosrz/vectora · install failed
- io.github.brunovicco/openfinance-br-mcp · crashed on start
- CougarMap io.github.bryantclark/cougarmap · not found
- StatsPAI io.github.brycewang-stanford/statspai · alive
- io.github.bunnyf/kicad-mcp-server · alive
- io.github.burningion/video-editing-mcp · not found
- Afterpaths io.github.burnssa/afterpaths · needs args
- Job-application tracker io.github.butyavk/tracker-mcp · needs env
Servers that mention capability or program.
- ai.bizmoon/regulatory · alive
- DSAIL ai.jaxon/dsail · needs auth
- openbash ai.openbash/openbash · needs auth
- Revuo ai.revuo/revuo · alive
- ScoreIA La Forge ai.scoreia/forge · alive
- Sigil ai.tunnelmind/sigil · not found
- H-Index ai.xr-utilities/h-index · not found
- Evertrain app.evertrain/evertrain · needs auth
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.