costheta

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-08-12T08:20:11.052457Z",
      "publishedAt": "2026-08-12T08:20:11.052457Z",
      "statusChangedAt": "2026-08-12T08:20:11.052457Z"
    }
  },
  "server": {
    "name": "dev.costheta/costheta",
    "_meta": {
      "io.modelcontextprotocol.registry/publisher-provided": {
        "full_description": "Verifiable physical randomness from cosmic-ray muon detections. Seal your options as a hash, the next detected muon determines the outcome, receive a certificate dual-signed with Ed25519 and ML-DSA. Free public beacon; paid decisions settled per call via x402 in USDC, no account or API key. Throughput is bounded by physics: about one event every few seconds. Not for cryptographic key material. The certificate format supports multi-node attestation; the federation protocol is published as an open proposal. Today: one detector, one operator, one attestation per certificate.",
        "tool_descriptions": {
          "costheta_decide": "Paid commit-and-reveal decision. Send a hash of your options; the next detected muon selects one and you receive a publicly verifiable, dual-signed certificate binding your commitment to that physical event. Latency up to ~30 s. $0.02 via x402/USDC.",
          "costheta_random": "Free public beacon. Random bits derived from muon arrival timestamps on the latest signed pulse. Shared by all callers until the next muon arrives; for private, request-bound outcomes use costheta_decide. Not for cryptographic keys.",
          "costheta_witness": "Paid timestamp attestation. Binds any hash you send to the next detected muon and signs the pair: a timestamp anchored to a physical detection, not a server clock. $0.02 via x402/USDC."
        }
      }
    },
    "title": "costheta",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "remotes": [
      {
        "url": "https://costheta.dev/mcp",
        "type": "streamable-http"
      }
    ],
    "version": "0.1.0",
    "repository": {
      "url": "https://github.com/costhetadev/costheta-verify",
      "source": "github"
    },
    "websiteUrl": "https://costheta.dev",
    "description": "Verifiable physical randomness from cosmic-ray detections. Free beacon, paid signed decisions."
  }
}