mcpcost

io.github.Srikarmk/evalpair

evalpair

Is the evalpair MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-06.

Run LLM eval suites on local or hosted models; compare runs with intervals and a noise floor.

alive probed 2026-11-14 · unchanged since 2026-11-06

5tools
1.5ktokens in Claude Opus 5.5
0.8 %of Claude's 200k window
0.6×the median server
1.7 sto initialize
5 msto list tools
Run it
uvx evalpair@0.1.1 (stdio, probed in a container with the network off)
Host
pypi.org
Reports itself as
evalpair 0.1.1
Capabilities
prompts, resources, tools
Instructions
641 characters
Of a 1M window
0.2 % of a 1M context window
Count
1.5k tokens in Claude Opus 5.5, exact, measured 2026-11-05. With the Claude Code prefix mcp__…__ on each tool name: 1.6k. The o200k_base estimate is 882. Counted again when the tool definitions change. Method.
Repository
https://github.com/Srikarmk/evalpair
Registry
active, updated 2026-11-05 · registry entry
Changes
2 recorded, reachable in 2 of them. A row is added when the result, the tool count or the cost changes.

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.72×.

Tool≈ Claude tokenso200k estimateShare of this server
run_eval76244350 %
compare_runs26815618 %
show_run21012214 %
list_runs19411313 %
list_suites83485 %

Compare this server with others.

More servers

Other registry entries on pypi.org, the ones next to this name; all of them.

Servers that mention intervals or compare.

History

We add a row when the result changes. A server with no change keeps its last row.

ProbedResultInitToolsClaudeo200k
2026-11-06 08:40alive1.7 s51.5k882
2026-11-05 08:40alive1.9 s51.5k882

Badge for the README

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.

Atom feed

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