mcpcost

io.github.meob/euclid-mcp

Euclid-MCP

Is the Euclid- MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.

Deterministic logical reasoning engine — facts in Euclid IR, solutions with proof trees

alive probed 2026-11-14 · unchanged since 2026-10-31

8tools
2.1ktokens in Claude Opus 5.5
1.1 %of Claude's 200k window
0.8×the median server
2.3 sto initialize
7 msto list tools
Run it
uvx euclid-mcp@0.4.5 (stdio, probed in a container with the network off)
Host
pypi.org
Reports itself as
Euclid-MCP
Capabilities
prompts, resources, tools
Instructions
540 characters
Of a 1M window
0.2 % of a 1M context window
Count
2.1k tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 2.2k. The o200k_base estimate is 1.1k. Counted again when the tool definitions change. Method.
Repository
https://github.com/meob/Euclid-MCP
Registry
active, updated 2026-08-21 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.91×.

Tool≈ Claude tokenso200k estimateShare of this server
diagnose39020419 %
what_if37719718 %
explain36519117 %
reason33317416 %
check_kb23012011 %

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mcpcost: alive

The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

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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.

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