io.github.mrfentmen/smithsonian-mcp

smithsonian-mcp

MCP server for Smithsonian collections: artifacts, art, specimens. Free key.

alive probed 2026-10-15

3tools

643tokens in Claude Opus 5.5

685tokens in Claude Code

0.3 %of a 200k context window

358o200k_base estimate

214 msto initialize

6 msto list tools

Run it: npx -y smithsonian-mcp@1.0.2 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: smithsonian-mcp 1.0.0
Capabilities: tools
Instructions: none
Claude count: Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
Repository: https://github.com/mrfentmen/awesome-mcps
Registry: active, updated 2026-10-02 · registry entry
Reachable: 1 of the last 1 probe

Most expensive tools

Tool	Tokens (o200k)	Share of this server
openaccess_digest	148	41 %
openaccess_corpus	113	32 %
search_objects	97	27 %

Badge and feed

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