mcpcost

io.github.mrfentmen/dataone-mcp

dataone-mcp

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

DataONE: earth and environmental science data MCP: real tools for real work.

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

3tools
682tokens in Claude Opus 5.5
0.3 %of Claude's 200k window
0.3×the median server
219 msto initialize
6 msto list tools
Run it
npx -y @mrfentmen/dataone-mcp@1.0.0 (stdio, probed in a container with the network off)
Host
npmjs.com
Reports itself as
dataone-mcp 1.0.0
Capabilities
tools
Instructions
none
Of a 1M window
<0.1 % of a 1M context window
Count
682 tokens in Claude Opus 5.5, exact, measured 2026-11-09. With the Claude Code prefix mcp__…__ on each tool name: 718. The o200k_base estimate is 404. 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, 1.69×.

Tool≈ Claude tokenso200k estimateShare of this server
search28016641 %
facets21112531 %
record19111328 %

Compare this server with others.

More servers

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

Servers that mention environmental or science.

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