io.github.mrfentmen/worms-mcp

worms-mcp

Is the io.github.mrfentmen/worms-mcp MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-09.

World Register of Marine Species: search names, read records, children and full classification.

alive probed 2026-11-14 · unchanged since 2026-11-09

4tools

679tokens in Claude Opus 5.5

0.3 %of Claude's 200k window

0.3×the median server

258 msto initialize

5 msto list tools

Run it: npx -y @mrfentmen/worms-mcp@1.0.1 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: worms-mcp 1.0.0
Capabilities: tools
Instructions: none
Of a 1M window: <0.1 % of a 1M context window
Count: 679 tokens in Claude Opus 5.5, exact, measured 2026-11-02. With the Claude Code prefix mcp__…__ on each tool name: 723. The o200k_base estimate is 361. Counted again when the tool definitions change. Method.
Repository: https://github.com/mrfentmen/awesome-servers
Registry: active, updated 2026-11-08 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.88×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
search_species	192	102	28 %
species_children	182	97	27 %
species_record	160	85	24 %
species_classification	145	77	21 %

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

Servers that mention worms.

Worms io.github.pipeworx-io/worms · alive
Propagation breaker for agent fleets com.textforagents/propagation-breaker-agent-worms · alive
io.github.cyanheads/worms-marine-taxa-mcp-server · 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.

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