dev.costheta/costheta
costheta
Verifiable physical randomness from cosmic-ray detections. Free beacon, paid signed decisions.
alive probed 2026-10-05 · HTTP 200
3tools
676tokens in Claude Opus 5.5
700tokens in Claude Code
0.3 %of a 200k context window
359o200k_base estimate
1.2 sto initialize
526 msto list tools
- Endpoint
- https://costheta.dev/mcp (streamable-http)
- Host
- costheta.dev
- Protocol
- 2025-11-25
- Reports itself as
- costheta 0.1.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/costhetadev/costheta-verify
- Website
- https://costheta.dev
- Registry
- active, updated 2026-08-12 · registry entry
- Reachable
- 6 of the last 6 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| costheta_decide | 135 | 38 % |
| costheta_random | 113 | 31 % |
| costheta_witness | 111 | 31 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-05 13:57 | alive | 1.2 s | 3 | 676 | 359 |
| 2026-10-05 00:24 | alive | 789 ms | 3 | 359 | |
| 2026-10-04 10:00 | alive | 914 ms | 3 | 359 | |
| 2026-10-04 07:53 | alive | 1.3 s | 3 | 359 | |
| 2026-10-03 20:33 | alive | 1.1 s | 3 | 359 | |
| 2026-10-03 17:50 | alive | 618 ms | 3 | 359 |
Badge and feed
[](https://mcpcost.ulehla.dev/s/dev.costheta/costheta)
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.