io.github.cyanheads/smithsonian-mcp-server
smithsonian-mcp-server
Search 14.5M Smithsonian Open Access objects, get CC0 images, find cross-collection connections.
alive probed 2026-10-09 · HTTP 200
6tools
4.9ktokens in Claude Opus 5.5
5.0ktokens in Claude Code
2.4 %of a 200k context window
2.9ko200k_base estimate
5.6 sto initialize
82 msto list tools
- Endpoint
- https://smithsonian.caseyjhand.com/mcp (streamable-http)
- Host
- smithsonian.caseyjhand.com
- Protocol
- 2025-11-25
- Reports itself as
- smithsonian-mcp-server 0.3.8
- Capabilities
- logging, prompts, resources, tools
- Instructions
- 778 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/cyanheads/smithsonian-mcp-server
- Registry
- active, updated 2026-10-08 · registry entry
- Reachable
- 7 of the last 7 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| smithsonian_search_objects | 1 178 | 40 % |
| smithsonian_browse_category | 670 | 23 % |
| smithsonian_list_terms | 436 | 15 % |
| smithsonian_find_related | 301 | 10 % |
| smithsonian_get_media | 206 | 7 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-09 11:18 | alive | 289 ms | 6 | 4.9k | 2.9k |
| 2026-10-05 14:40 | alive | 5.6 s | 6 | 4.9k | 2.9k |
| 2026-10-05 00:33 | alive | 185 ms | 6 | 2.9k | |
| 2026-10-04 10:04 | alive | 207 ms | 6 | 2.9k | |
| 2026-10-04 07:57 | alive | 316 ms | 6 | 2.9k | |
| 2026-10-03 20:37 | alive | 974 ms | 6 | 2.9k | |
| 2026-10-03 17:53 | alive | 499 ms | 6 | 2.9k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.cyanheads/smithsonian-mcp-server)
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.