generated: '2026-09-19'
method: searched
source: openapi/getaiscan-app-openapi.json
docs:
- https://getaiscan.app/llms.txt
- https://api.getaiscan.app/api/agent/index
- https://getaiscan.app/.well-known/agent-card.json
summary:
  types:
  - apiKey
  api_key_in:
  - header
  oauth2_flows: []
  bearer: false
  credential_classes: 1
  headline: >-
    No API key, no account, no signup, no OAuth. The single securityScheme in the contract is named "x402" and
    typed apiKey-in-header only because OpenAPI has no vocabulary for a payment credential: the header
    PAYMENT-SIGNATURE carries an x402 V2 payment — either a signed EIP-3009 "exact" authorization for USDC on
    Base settled through the Coinbase CDP facilitator, or the transaction hash of a direct USDC transfer to the
    provider's wallet. An unpaid call to any paid route returns HTTP 402 with a base64 PAYMENT-REQUIRED header
    and a JSON body naming the price, asset, network, recipient and both flows. GET /api/agent/index is the only
    unauthenticated route (security: []).
schemes:
- name: x402
  type: apiKey
  in: header
  parameter: PAYMENT-SIGNATURE
  description: 'x402 V2 payment: signed payload or Base USDC tx hash'
  semantics: payment credential, not an identity credential — the paying wallet is the only identity the API sees
  protocol:
    name: x402
    version: 2
    network: eip155:8453 (Base mainnet)
    asset: USDC — 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
    pay_to: '0x0a28ace35b9687a9334cd503b3c7d4b23734a1c7'
    flows:
    - id: exact
      description: EIP-3009 transferWithAuthorization signed by the payer, settled via the Coinbase CDP facilitator; the signed payload goes in PAYMENT-SIGNATURE.
    - id: direct-transfer
      description: Send the exact USDC amount on Base to pay_to, then retry the same request with PAYMENT-SIGNATURE set to the transaction hash.
    max_timeout_seconds: 300
  challenge_observed:
    request: 'POST https://api.getaiscan.app/api/agent/check_health {"url":"https://example.com"} with no payment header, 2026-09-19'
    status: 402
    headers:
      payment-required: base64 JSON — {x402Version 2, error "PAYMENT-SIGNATURE header is required", resource {url, description, mimeType}, accepts [{scheme exact, network eip155:8453, amount 60000, asset, payTo, maxTimeoutSeconds 300, extra {name USD Coin, version 2}}], extensions {}}
      x-payment-required: 'true'
      x-payment-version: '2'
      x-payment-amount: '0.06'
      x-payment-currency: USDC
      x-payment-network: eip155:8453
      x-payment-recipient: '0x0a28ace35b9687a9334cd503b3c7d4b23734a1c7'
      x-payment-asset: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
    body_fields: [x402Version, error, resource, accepts, extensions, price, currency, recipient, instructions, capability, index]
    instructions_verbatim: >-
      Pay 0.06 USDC: x402 V2 'exact' scheme (PAYMENT-SIGNATURE header, settled via Coinbase CDP facilitator),
      or direct-transfer: send 0.06 USDC on Base (eip155:8453) to 0x0a28ace35b9687a9334cd503b3c7d4b23734a1c7
      and retry with PAYMENT-SIGNATURE: <tx_hash>
    note: The body's accepts[0].network says "base" while the header and the PAYMENT-REQUIRED payload say "eip155:8453"; the amount is in USDC base units (60000 = 0.06 USDC, 6 decimals).
  header_aliases:
    accepted_by_cors: [PAYMENT-SIGNATURE, Payment-Signature, X-Payment, X-PAYMENT]
    note: The legacy agent.json descriptor and the mcp.json descriptor name X-Payment; the OpenAPI, the agent card and the live challenge name PAYMENT-SIGNATURE. Use PAYMENT-SIGNATURE.
  applied_to: every POST /api/agent/{capability} operation (19 of 20 operations); the operations declare no per-operation security[] and the document declares no top-level security, so the requirement is expressed by the 402 response each operation declares rather than by a security requirement object
  exempt: [index]
  sources:
  - openapi/getaiscan-app-openapi.json
gaps:
- The OpenAPI declares the x402 scheme in components.securitySchemes but applies it nowhere (no top-level or per-operation security[] except index's empty list); a client generator will treat every operation as anonymous.
- No OAuth/OIDC, no RFC 9728 protected-resource metadata, no RFC 8414 metadata on either host; there is nothing to discover beyond the 402 itself.
- No testnet or sandbox payment path is documented; every call is a real mainnet USDC payment.