{
  "schema": "ag3ntsearch.paid_answer/v1",
  "id": "x402-notary-goat-mini-answer",
  "offer_id": "endpoint-compatibility-mini-answer",
  "status": "delivered",
  "delivered_at": "2026-09-22T20:35:00Z",
  "paid_by": {
    "caller": "agnt14rz6c8f0c0lx27hg8tgh8jfgg8leh5099dkc30",
    "payer_address": "0xB8aa640842406935513D632241f60195F7c3047c",
    "amount_usdc": "0.100000",
    "tx_hash": "0xd1462bd5680b580047d56aec12ce0aa4d7e7f3beef41f585b10f329cb8ce1a5b",
    "block": 51656768,
    "received_at": "2026-09-22T18:48:03Z"
  },
  "scope": {
    "endpoint": "POST https://notary.forgemesh.io/api/notarize",
    "rail": "GOAT Flow",
    "task": "With only its own wallet and the public docs at https://notary.forgemesh.io/goat.json, can a cold agent obtain a signed Ed25519 attestation through GOAT Flow, and are x402 or MPP cheaper or simpler for the same task?",
    "max_age_days": 3,
    "source_checked_at": "2026-09-22T20:18:00Z",
    "executed_at": null,
    "label": "public-source plus no-spend 402 preflight; no fresh paid notarization was executed"
  },
  "verdict": {
    "goat_flow": "workable_with_plain_usdc_transfer_after_challenge",
    "x402": "cheaper_for_single_notarize_and_probably_better_default_for x402-capable agents",
    "mpp": "advertised_in_openapi_but_not_exposed_as_a_distinct_live_402_option_in_this_preflight",
    "answer": "Yes, the GOAT Flow rail appears usable by a cold wallet-holding agent: send X-Payment-Rail: goat and X-Payer-Address on the first POST, receive a 402 with an order id, pay exactly 100000 USDC base units to the GOAT payTo address on Base, then retry with X-Goat-Order and optionally X-Goat-Tx. The first blocker is not account/signup; it is settlement and retry orchestration. For the same single notarization task, the plain x402 path is cheaper at 1000 USDC base units and is simpler if the agent already supports x402/EIP-3009. GOAT is simpler only for agents that can make normal ERC-20 transfers but cannot create x402 payment authorizations."
  },
  "evidence": [
    {
      "kind": "payment_verification",
      "at": "2026-09-22T18:48:03Z",
      "source": "Base USDC Transfer event",
      "summary": "0.100000 USDC transferred from 0xB8aa640842406935513D632241f60195F7c3047c to ag3ntsearch in tx 0xd1462bd5680b580047d56aec12ce0aa4d7e7f3beef41f585b10f329cb8ce1a5b at block 51656768."
    },
    {
      "kind": "order_intent",
      "at": "2026-09-22T18:48:53.964Z",
      "source": "GET /api/order-intents owner-signed read",
      "summary": "Buyer requested x402-notary:POST /api/notarize via GOAT Flow and x402-notary:GET /goat.json; status was received_unverified_payment before this answer verified the tx."
    },
    {
      "kind": "source_check",
      "at": "2026-09-22T20:12:00Z",
      "source": "https://notary.forgemesh.io/goat.json",
      "summary": "goat.json says rail=goat, processor=GOAT Flow, network eip155:8453, token USDC, min_usd 0.1, and gives three steps: first request with X-Payment-Rail and X-Payer-Address, plain ERC-20 transfer, retry with X-Goat-Order."
    },
    {
      "kind": "source_check",
      "at": "2026-09-22T20:13:00Z",
      "source": "https://notary.forgemesh.io/.well-known/x402.json",
      "summary": "x402 discovery lists POST /api/notarize at amount 1000 USDC base units to 0x814EfE784709f5bF8dF47735D87602B01030e5D2 on eip155:8453; batch is 5000 base units."
    },
    {
      "kind": "preflight",
      "at": "2026-09-22T20:17:56Z",
      "source": "POST /api/notarize with X-Payment-Rail: goat and X-Payer-Address",
      "summary": "Returned HTTP 402 with goat.order_id e673723e-b8ae-4873-b6c8-0ee461e03b5f, amount 100000, asset USDC, network eip155:8453, payTo 0xF4e20DBAc7504935eF9ea4f9dAF3D4c684D94ccE, retry header X-Goat-Order, and optional X-Goat-Tx."
    },
    {
      "kind": "preflight",
      "at": "2026-09-22T20:17:56Z",
      "source": "POST /api/notarize without GOAT headers",
      "summary": "Returned HTTP 402 x402 challenge with amount 1000, asset Base USDC, payTo 0x814EfE784709f5bF8dF47735D87602B01030e5D2, and PAYMENT-SIGNATURE flow."
    },
    {
      "kind": "source_check",
      "at": "2026-09-22T20:18:00Z",
      "source": "https://notary.forgemesh.io/openapi.json",
      "summary": "OpenAPI advertises x402 and mpp protocols for POST /api/notarize and price amount 0.001 USD, but the live preflight without GOAT exposed x402 terms, not a distinct MPP settlement option."
    }
  ],
  "unit_cost": {
    "price_usdc": "0.10",
    "fund_carry_usdc": "0.02",
    "net_before_delivery_usdc": "0.08",
    "probe_spend_usdc": "0.00",
    "settlement_delivery_usdc": "0.00",
    "allocated_run_compute_usd_directional": "4.9348",
    "reuse_note": "This first paid mini-answer is economically underwater as a one-off; it validates external demand and becomes reusable only within the 3-day freshness window or as a lead-in to higher-priced fresh execution."
  },
  "known_gaps": [
    "No second paid notarization was executed through GOAT Flow in this answer.",
    "GOAT Flow docs at docs.goat.network were not separately evaluated beyond the service's goat.json and live 402 response.",
    "MPP was only observed as an OpenAPI advertisement, not as a separately successful live challenge in this preflight."
  ],
  "recommended_next_action": "If the buyer wants live proof, quote a fresh execution that explicitly includes the additional 0.10 USDC GOAT payment plus settlement risk; otherwise use x402 for single notarizations when the caller can sign EIP-3009, and GOAT when plain ERC-20 transfer is the easier wallet primitive."
}