# costheta (costheta.dev)

Returns signed, recomputable random outcomes derived from a cosmic-ray muon detector event recorded after a committed option list.

- Atlas card: https://inite.ai/en/atlas/costheta.dev
- Site: https://costheta.dev
- For: AI agents and their operators who need auditable decisions backed by physical detector evidence
- Categories: security
- Use 0/100 · alive 100/100

## Used for

- Commit a choice before a detector event fixes the result
- Obtain a signed certificate for a challenged decision
- Draw public random bits from a detector pulse

## Price

Not read yet.

## For developers

- OpenAPI: https://costheta.dev/openapi.json (21 paths)
- MCP server: dev.costheta/costheta (namespace; open on 2026-10-26, 3 tools)
- Read 2026-10-26

## MCP server, measured daily

Server: https://costheta.dev/mcp, checked every day since 2026-10-26 (1 checks).

- Answered: measuring, 1 daily checks so far
- Median first answer: 581 ms
- Sign-in: none
- Context its tool definitions take: about 412 tokens (3 tools)
- Tool definitions: B, 78/100
- Failing "params_described": 1 of 3 tools
- Failing "annotations": 3 of 3 tools
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-26

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Source: INITE Atlas, https://inite.ai/en/atlas/costheta.dev. JSON: https://inite.ai/api/atlas/costheta.dev. MCP: https://inite.ai/api/mcp (atlas_lookup).