io.github.mrfentmen/ns-mcp

ns-mcp

Is the io.github.mrfentmen/ns-mcp MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.

NS Dutch Railways API: departures, stations, journeys, disruptions, fares.

alive probed 2026-11-14 · unchanged since 2026-10-30

7tools

1.4ktokens in Claude Opus 5.5

0.7 %of Claude's 200k window

0.6×the median server

225 msto initialize

8 msto list tools

Run it: npx -y @mrfentmen/ns-mcp@1.0.1 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: ns-mcp 1.0.0
Capabilities: tools
Instructions: none
Of a 1M window: 0.1 % of a 1M context window
Count: 1.4k tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 1.5k. The o200k_base estimate is 825. Counted again when the tool definitions change. Method.
Repository: https://github.com/mrfentmen/awesome-mcps
Registry: active, updated 2026-10-01 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.74×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
station_network_census	371	213	26 %
station_wikidata_profile	247	142	17 %
plan_journey	212	122	15 %
get_departures	205	118	14 %
get_fares	150	86	10 %

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

Servers that mention mrfentmen.

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.