io.github.gawk-dev/mcpgawk
mcpgawk
Measure MCP servers, pin the approved tool surface, refuse calls to tools that changed. Local-first.
alive probed 2026-10-14
2tools
366tokens in Claude Opus 5.5
388tokens in Claude Code
0.2 %of a 200k context window
224o200k_base estimate
3.0 sto initialize
5 msto list tools
- Run it
- uvx mcpgawk==0.1.78 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- mcpgawk 0.1.78
- Capabilities
- 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/gawk-dev/mcpgawk
- Website
- https://mcp.gawk.dev
- Registry
- active, updated 2026-10-10 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| scan_mcp_server | 114 | 51 % |
| scan_mcp_fleet | 110 | 49 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.gawk-dev/mcpgawk)
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.