io.github.starfetch-js/starfetch
Starfetch
Query public astronomy catalogs through metadata-first TAP and ADQL tools.
alive probed 2026-10-15
12tools
4.1ktokens in Claude Opus 5.5
4.2ktokens in Claude Code
2.1 %of a 200k context window
2.2ko200k_base estimate
175 msto initialize
9 msto list tools
- Run it
- npx -y @starfetch-js/mcp@0.3.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- starfetch 0.3.0
- Capabilities
- prompts, resources, tools
- Instructions
- 407 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/starfetch-js/starfetch
- Registry
- active, updated 2026-07-25 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| starfetch_tap_query | 432 | 19 % |
| starfetch_tap_submit_job | 426 | 19 % |
| starfetch_tap_job_wait | 252 | 11 % |
| starfetch_tap_job_fetch | 214 | 10 % |
| starfetch_tap_columns | 142 | 6 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.starfetch-js/starfetch)
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.