io.github.physics-star-cat/databutler-facts
databutler-facts
Official thresholds, rates and fees by key, with source, verified date and signature.
alive probed 2026-10-13 · HTTP 200
3tools
1.8ktokens in Claude Opus 5.5
1.8ktokens in Claude Code
0.9 %of a 200k context window
1.1ko200k_base estimate
177 msto initialize
259 msto list tools
- Endpoint
- https://databutler.dev/api/mcp/facts (streamable-http)
- Host
- databutler.dev
- Protocol
- 2025-11-25
- Reports itself as
- databutler-facts 1.1.0
- Capabilities
- tools
- Instructions
- 822 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-13. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/physics-star-cat/databutler
- Website
- https://databutler.dev/api
- Registry
- active, updated 2026-10-13 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| what_changed_since | 542 | 50 % |
| get_fact | 376 | 35 % |
| resolve_fact | 163 | 15 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.physics-star-cat/databutler-facts)
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.