io.github.rog0x/perf
mcp-perf-tools
Benchmark, memory, Big O analysis for AI agents
alive probed 2026-10-15
5tools
1.5ktokens in Claude Opus 5.5
1.5ktokens in Claude Code
0.7 %of a 200k context window
813o200k_base estimate
302 msto initialize
11 msto list tools
- Run it
- npx -y @rog0x/mcp-perf-tools@1.0.2 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- mcp-perf-tools 1.0.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/rog0x/mcp-perf-tools
- Registry
- active, updated 2026-03-22 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| load_test | 256 | 31 % |
| big_o_estimate | 193 | 24 % |
| benchmark | 171 | 21 % |
| memory_analyze | 109 | 13 % |
| bundle_analyze | 84 | 10 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.rog0x/perf)
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.