io.github.mrfentmen/diff-mcp

diff-mcp

Compare two texts or files and show line changes locally. No network and no key.

alive probed 2026-10-14

2tools

301tokens in Claude Opus 5.5

323tokens in Claude Code

0.2 %of a 200k context window

166o200k_base estimate

317 msto initialize

9 msto list tools

Run it: npx -y @mrfentmen/diff-mcp@1.0.1 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: diff-mcp 1.0.0
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/mrfentmen/diff-mcp
Registry: active, updated 2026-09-21 · registry entry
Reachable: 1 of the last 1 probe

Most expensive tools

Tool	Tokens (o200k)	Share of this server
unified_diff	90	54 %
diff_text	76	46 %

Badge and feed

[![mcpcost](https://mcpcost.ulehla.dev/badge/io.github.mrfentmen/diff-mcp.svg)](https://mcpcost.ulehla.dev/s/io.github.mrfentmen/diff-mcp)

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.