io.github.mrfentmen/openrouter-mcp

openrouter-mcp

Is the io.github.mrfentmen/openrouter-mcp MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-29.

Query OpenRouter (free key; set OPENROUTER_API_KEY, Bearer): model list, key info, credits.

alive probed 2026-11-15 · unchanged since 2026-10-29

9tools

1.0ktokens in Claude Opus 5.5

0.5 %of Claude's 200k window

0.4×the median server

359 msto initialize

8 msto list tools

Run it: npx -y @mrfentmen/openrouter-mcp@1.1.0 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: openrouter-mcp 1.0.0
Capabilities: tools
Instructions: none
Of a 1M window: 0.1 % of a 1M context window
Count: 1.0k tokens in Claude Opus 5.5, exact, measured 2026-10-29. With the Claude Code prefix mcp__…__ on each tool name: 1.2k. The o200k_base estimate is 572. Counted again when the tool definitions change. Method.
Repository: https://github.com/mrfentmen/premium-mcps
Registry: active, updated 2026-10-17 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.81×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
model_endpoints	154	85	15 %
search_models	143	79	14 %
get_model	127	70	12 %
generation_stats	116	64	11 %
free_models	114	63	11 %

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

Servers that mention openrouter.

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

Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.