CO

costheta

dev.costheta/costheta

Verifiable physical randomness from cosmic-ray detections. Free beacon, paid signed decisions.

Yes, your AI can use this right now.Answered a live MCP handshake in 711 ms with no sign-in needed and exposes 3 tools.
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Connect it

Settings → Connectors → Add custom connector
URL: https://costheta.dev/mcp

3 tools, pulled live

Pulled straight from the server with tools/list on 2026-10-27.
costheta_random

Free public random outcome anchored to the latest signed cosmic-ray coincidence pulse. This is a shared beacon: every caller sees the same latest signed pulse until the next muon arrives. For private commitments and retry-safe paid certificates, use costheta_decide.

costheta_decide

Paid x402 Base mainnet tool: commit-and-reveal decision with a signed certificate. Requires PAYMENT-SIGNATURE and idempotency_key.

costheta_witness

Paid x402 Base mainnet tool: witness a caller commitment against a signed pulse certificate. Requires PAYMENT-SIGNATURE and idempotency_key.

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