{
  "protocolVersion": "0.3.0",
  "name": "SPX402",
  "description": "SPX402 is an on-chain reputation terminal for Solana and Base agents. Every grade is derived from indexed on-chain receipts — settlements, buybacks, burns, failures — never from self-reported claims.",
  "url": "https://spx402.com",
  "documentationUrl": "https://spx402.com/build/docs",
  "provider": {
    "organization": "SPX402",
    "url": "https://spx402.com"
  },
  "version": "spx-score-v0.4.0",
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "skills": [
    {
      "id": "agent_grade_lookup",
      "name": "Agent grade lookup",
      "description": "Return the SPX402 execution grade, score and confidence for one agent identifier.",
      "tags": [
        "reputation",
        "solana",
        "base"
      ]
    },
    {
      "id": "execution_tape",
      "name": "Execution tape",
      "description": "Read recent verified on-chain agent events with severity and chain.",
      "tags": [
        "events",
        "tape"
      ]
    },
    {
      "id": "facilitator_registry",
      "name": "Facilitator registry",
      "description": "List the x402 payment facilitators SPX402 tracks.",
      "tags": [
        "x402",
        "facilitators"
      ]
    },
    {
      "id": "evidence_bundle",
      "name": "Evidence bundle",
      "description": "Merkle-rooted proof of execution over a subject's 30-day event window.",
      "tags": [
        "evidence",
        "merkle"
      ]
    }
  ],
  "interfaces": {
    "mcp": "https://spx402.com/api/public/mcp",
    "x402": "https://spx402.com/.well-known/x402",
    "verifiedFeed": "https://spx402.com/api/public/verified",
    "llms": "https://spx402.com/llms.txt"
  },
  "payments": {
    "model": "pay-per-call",
    "asset": "USDC",
    "network": "base",
    "policy": "Strictly pay-per-call with no free tier on the paid resources. SPX402 does not sponsor gas via any paymaster: callers and agents supply their own USDC settlement on Base and cover all execution fees.",
    "prices": {
      "score": "0.01",
      "dossier": "0.05",
      "evidence": "0.05"
    }
  }
}