research brief derived

{
  "input": {
    "body": {
      "depth": "quick",
      "scope": {
        "max_sources": 3
      },
      "question": "What is the x402 protocol and how do agents pay for APIs?"
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
  },
  "output": {
    "type": "json",
    "example": {
      "ok": true,
      "brief": {
        "caveats": [
          "Ecosystem evolving quickly; always check live facilitator docs"
        ],
        "summary": "x402 is an open payment protocol that uses HTTP 402 Payment Required so clients (including AI agents) can pay for web resources with stablecoins, commonly USDC on Base, via a facilitator that verifies and settles.",
        "headline": "x402 turns HTTP 402 into USDC micropayments for agents",
        "confidence": 0.78,
        "key_points": [
          "Server returns 402 with payment terms; client pays and retries",
          "CDP Facilitator commonly used for verify/settle on Base",
          "Bazaar indexes discoverable paid routes"
        ]
      },
      "usage": {
        "floor_mult": 1.3,
        "latency_ms": 6400,
        "price_usdc": "0.08",
        "sources_used": 3,
        "token_cost_est_usdc": "0.05"
      },
      "endpoint": "research-brief",
      "citations": [
        {
          "url": "https://docs.cdp.coinbase.com/x402/buyer/discover-services",
          "title": "x402 Bazaar (Discovery Layer)",
          "snippet": "The x402 Bazaar is a catalog of payment-gated services discovered by the CDP Facilitator.",
          "published": null,
          "publisher": "Coinbase CDP"
        }
      ],
      "client_ref": null
    }
  }
}