openapi: 3.2.0
info:
  title: GPT55 Model Gateway Wallet Security API
  version: 1.0.0
  description: Reduced GPT55 public surface after x402 project split, with GPT-5.6 Luna Standard as the default upstream gpt-5.6-luna model path, explicit Soul and Terra routes for higher-cost requests, the unified service hub, prepaid Luna call packs, and per-request x402 calls.
  x-gpt55-relatedProjects:
  - id: x402-utility-tools
    title: Utility tools
    status: retired_consolidated
    historicalOrigin: https://x402-utils.558686.xyz
    canonicalOrigin: https://gpt55.558686.xyz
    paidRoutesAvailableOnHistoricalHost: false
    retirementNotice: https://x402-utils.558686.xyz/.well-known/x402
    canonicalServiceHub: https://gpt55.558686.xyz/x402/service
    paymentPolicy: Do not pay a retired split-host URL. Follow the retirement notice to the canonical GPT55 service hub and fetch a fresh live quote there.
  - id: x402-agent-wallet-tools
    title: Agent wallet tools
    status: retired_consolidated
    historicalOrigin: https://x402-wallet.558686.xyz
    canonicalOrigin: https://gpt55.558686.xyz
    paidRoutesAvailableOnHistoricalHost: false
    retirementNotice: https://x402-wallet.558686.xyz/.well-known/x402
    canonicalServiceHub: https://gpt55.558686.xyz/x402/service
    paymentPolicy: Do not pay a retired split-host URL. Follow the retirement notice to the canonical GPT55 service hub and fetch a fresh live quote there.
  - id: x402-seller-growth-tools
    title: Seller growth tools
    status: retired_consolidated
    historicalOrigin: https://x402-seller.558686.xyz
    canonicalOrigin: https://gpt55.558686.xyz
    paidRoutesAvailableOnHistoricalHost: false
    retirementNotice: https://x402-seller.558686.xyz/.well-known/x402
    canonicalServiceHub: https://gpt55.558686.xyz/x402/service
    paymentPolicy: Do not pay a retired split-host URL. Follow the retirement notice to the canonical GPT55 service hub and fetch a fresh live quote there.
  - id: x402-key-url-tools
    title: Key and URL tools
    status: retired_consolidated
    historicalOrigin: https://x402-key.558686.xyz
    canonicalOrigin: https://gpt55.558686.xyz
    paidRoutesAvailableOnHistoricalHost: false
    retirementNotice: https://x402-key.558686.xyz/.well-known/x402
    canonicalServiceHub: https://gpt55.558686.xyz/x402/service
    paymentPolicy: Do not pay a retired split-host URL. Follow the retirement notice to the canonical GPT55 service hub and fetch a fresh live quote there.
  x-gpt55-payment:
    protocol: x402
    network: eip155:8453
    asset: USDC
    payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
    facilitator: provider-pool
    facilitatorPool:
    - id: dexter
      url: https://x402.dexter.cash
      status: frozen_settlement
      active: false
      networks:
      - eip155:8453
      - solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
      observedAt: '2026-07-19T16:04:32.063Z'
    - id: fluxa
      url: https://facilitator.fluxapay.xyz
      status: frozen_settlement
      active: false
      networks:
      - eip155:8453
      observedAt: '2026-07-19T16:04:32.063Z'
    - id: mogami
      url: https://v2.facilitator.mogami.tech
      status: frozen_unreachable
      active: false
      networks:
      - eip155:8453
      observedAt: '2026-09-18T08:31:22.080Z'
    - id: primer
      url: https://x402.primer.systems
      status: frozen_unreachable
      active: false
      networks:
      - eip155:8453
      observedAt: '2026-09-18T08:31:22.080Z'
    - id: xpay
      url: https://facilitator.xpay.sh
      status: enabled
      active: true
      networks:
      - eip155:8453
      observedAt: '2026-09-18T08:36:32.152Z'
    - id: payai
      url: https://facilitator.payai.network
      status: frozen_quota
      active: false
      networks:
      - eip155:8453
      - solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
      observedAt: '2026-09-18T08:36:32.152Z'
    - id: kobaru
      url: https://gateway.kobaru.io
      status: frozen_unreachable
      active: false
      networks:
      - eip155:8453
      - solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
      observedAt: '2026-09-18T08:31:22.080Z'
    - id: cdp
      url: https://api.cdp.coinbase.com/platform/v2/x402
      status: frozen_unreachable
      active: false
      networks:
      - eip155:8453
      - solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
      observedAt: '2026-08-29T17:17:22.202Z'
    - id: solvador
      url: https://api.solvador.com
      status: disabled
      active: false
      networks: []
    fallbackFacilitators:
    - https://facilitator.xpay.sh
  primaryCommercialOffer:
    id: standard-chat-demand-first
    routeId: standard-chat
    title: GPT-5.6 Luna Standard one-request result
    buyerJob: Get one immediate OpenAI-compatible answer before committing to a quota pack or a larger workflow.
    method: POST
    paidUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteOnlyUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    previewUrl: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    price: $0.00293
    priceUsd: 0.00293
    amountAtomic: '2930'
    network: eip155:8453
    asset: USDC
    assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
    payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
    input:
      contentType: application/json
      example:
        messages:
        - role: user
          content: Answer one concrete question in one short paragraph.
        max_tokens: 128
    resultFields:
    - id
    - model
    - choices
    - usage
    - x-x402-receipt-id
    - x-x402-receipt-url
    browserCheckout:
      available: true
      provider: EIP-1193 injected wallet
      type: eip3009-transfer-with-authorization
      url: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
      paidUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
      quoteOnlyUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
      bundleUrl: https://gpt55.558686.xyz/x402/browser-wallet-payment.js
      method: POST
      network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
      amountAtomic: '2930'
      paymentHeader: PAYMENT-SIGNATURE
      responseHeaders:
      - PAYMENT-RESPONSE
      - X-PAYMENT-RESPONSE
      - x-x402-receipt-id
      - x-x402-receipt-url
      privateKeySentToService: false
      buttonLabel: Pay with browser wallet
    agentFallback:
      routeId: standard
      firstPaymentClient: https://gpt55.558686.xyz/x402/first-payment-client.mjs
      quoteOnlyCommand: ROUTE_ID=standard MAX_USDC=0.00293 node first-payment-client.mjs
      realPaymentCommand: PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
      installCommand: npm install @x402/fetch @x402/core @x402/evm viem
      requiredRuntime: optional-desktop-or-server-terminal-fallback
      sameRequestRetry: true
      paymentHeaders:
      - PAYMENT-SIGNATURE
      - X-PAYMENT
      privateKeySentToService: false
    model: gpt-5.6-luna
    nextPurchase:
      id: gpt-5.6-luna-100-call-pack
      routeId: gpt-5.6-luna-100-call-pack
      title: GPT-5.6 Luna 100 Prepaid Call Credits
      model: gpt-5.6-luna
      method: GET
      paidUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      checkoutUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      quoteOnlyUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      price: $1.60
      amountAtomic: '1600000'
      callCount: 100
      network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
      privateKeySentToService: false
      reason: Use one prepaid purchase for repeated GPT-5.6 Luna calls with fewer payment steps.
    label: GPT-5.6 Luna Standard one-request result
    page: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    json: https://gpt55.558686.xyz/x402/service.json
    checkoutUrl: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    quoteUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteEndpoint: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteEndpointMode: live-402
    firstPaymentClient: https://gpt55.558686.xyz/x402/first-payment-client.mjs
    paymentClientUrl: https://gpt55.558686.xyz/x402/first-payment-client.mjs
    paymentActivation: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    installCommand: npm install @x402/fetch @x402/core @x402/evm viem
    quoteOnlyDedicated: ROUTE_ID=standard MAX_USDC=0.00293 node first-payment-client.mjs
    realPaymentDedicated: PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    paymentHeaderOnlyDedicated: X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    installThenCreatePaymentHeaderDedicated: npm install @x402/fetch @x402/core @x402/evm viem && X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    downloadInstallThenCreatePaymentHeaderDedicated: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    payCommand: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    downloadInstallThenPayDedicated: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    expectedResult:
    - id
    - model
    - choices
    - usage
    - x-x402-receipt-id
    - x-x402-receipt-url
  marketDemandOffer:
    id: standard-chat-demand-first
    routeId: standard-chat
    title: GPT-5.6 Luna Standard one-request result
    buyerJob: Get one immediate OpenAI-compatible answer before committing to a quota pack or a larger workflow.
    method: POST
    paidUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteOnlyUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    previewUrl: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    price: $0.00293
    priceUsd: 0.00293
    amountAtomic: '2930'
    network: eip155:8453
    asset: USDC
    assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
    payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
    input:
      contentType: application/json
      example:
        messages:
        - role: user
          content: Answer one concrete question in one short paragraph.
        max_tokens: 128
    resultFields:
    - id
    - model
    - choices
    - usage
    - x-x402-receipt-id
    - x-x402-receipt-url
    browserCheckout:
      available: true
      provider: EIP-1193 injected wallet
      type: eip3009-transfer-with-authorization
      url: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
      paidUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
      quoteOnlyUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
      bundleUrl: https://gpt55.558686.xyz/x402/browser-wallet-payment.js
      method: POST
      network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
      amountAtomic: '2930'
      paymentHeader: PAYMENT-SIGNATURE
      responseHeaders:
      - PAYMENT-RESPONSE
      - X-PAYMENT-RESPONSE
      - x-x402-receipt-id
      - x-x402-receipt-url
      privateKeySentToService: false
      buttonLabel: Pay with browser wallet
    agentFallback:
      routeId: standard
      firstPaymentClient: https://gpt55.558686.xyz/x402/first-payment-client.mjs
      quoteOnlyCommand: ROUTE_ID=standard MAX_USDC=0.00293 node first-payment-client.mjs
      realPaymentCommand: PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
      installCommand: npm install @x402/fetch @x402/core @x402/evm viem
      requiredRuntime: optional-desktop-or-server-terminal-fallback
      sameRequestRetry: true
      paymentHeaders:
      - PAYMENT-SIGNATURE
      - X-PAYMENT
      privateKeySentToService: false
    model: gpt-5.6-luna
    nextPurchase:
      id: gpt-5.6-luna-100-call-pack
      routeId: gpt-5.6-luna-100-call-pack
      title: GPT-5.6 Luna 100 Prepaid Call Credits
      model: gpt-5.6-luna
      method: GET
      paidUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      checkoutUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      quoteOnlyUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      price: $1.60
      amountAtomic: '1600000'
      callCount: 100
      network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
      privateKeySentToService: false
      reason: Use one prepaid purchase for repeated GPT-5.6 Luna calls with fewer payment steps.
    label: GPT-5.6 Luna Standard one-request result
    page: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    json: https://gpt55.558686.xyz/x402/service.json
    checkoutUrl: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    quoteUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteEndpoint: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteEndpointMode: live-402
    firstPaymentClient: https://gpt55.558686.xyz/x402/first-payment-client.mjs
    paymentClientUrl: https://gpt55.558686.xyz/x402/first-payment-client.mjs
    paymentActivation: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    installCommand: npm install @x402/fetch @x402/core @x402/evm viem
    quoteOnlyDedicated: ROUTE_ID=standard MAX_USDC=0.00293 node first-payment-client.mjs
    realPaymentDedicated: PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    paymentHeaderOnlyDedicated: X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    installThenCreatePaymentHeaderDedicated: npm install @x402/fetch @x402/core @x402/evm viem && X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    downloadInstallThenCreatePaymentHeaderDedicated: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    payCommand: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    downloadInstallThenPayDedicated: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    expectedResult:
    - id
    - model
    - choices
    - usage
    - x-x402-receipt-id
    - x-x402-receipt-url
  recommendedFirstPurchase:
    id: standard-chat-demand-first
    routeId: standard-chat
    title: GPT-5.6 Luna Standard one-request result
    buyerJob: Get one immediate OpenAI-compatible answer before committing to a quota pack or a larger workflow.
    method: POST
    paidUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteOnlyUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    previewUrl: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    price: $0.00293
    priceUsd: 0.00293
    amountAtomic: '2930'
    network: eip155:8453
    asset: USDC
    assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
    payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
    input:
      contentType: application/json
      example:
        messages:
        - role: user
          content: Answer one concrete question in one short paragraph.
        max_tokens: 128
    resultFields:
    - id
    - model
    - choices
    - usage
    - x-x402-receipt-id
    - x-x402-receipt-url
    browserCheckout:
      available: true
      provider: EIP-1193 injected wallet
      type: eip3009-transfer-with-authorization
      url: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
      paidUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
      quoteOnlyUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
      bundleUrl: https://gpt55.558686.xyz/x402/browser-wallet-payment.js
      method: POST
      network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
      amountAtomic: '2930'
      paymentHeader: PAYMENT-SIGNATURE
      responseHeaders:
      - PAYMENT-RESPONSE
      - X-PAYMENT-RESPONSE
      - x-x402-receipt-id
      - x-x402-receipt-url
      privateKeySentToService: false
      buttonLabel: Pay with browser wallet
    agentFallback:
      routeId: standard
      firstPaymentClient: https://gpt55.558686.xyz/x402/first-payment-client.mjs
      quoteOnlyCommand: ROUTE_ID=standard MAX_USDC=0.00293 node first-payment-client.mjs
      realPaymentCommand: PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
      installCommand: npm install @x402/fetch @x402/core @x402/evm viem
      requiredRuntime: optional-desktop-or-server-terminal-fallback
      sameRequestRetry: true
      paymentHeaders:
      - PAYMENT-SIGNATURE
      - X-PAYMENT
      privateKeySentToService: false
    model: gpt-5.6-luna
    nextPurchase:
      id: gpt-5.6-luna-100-call-pack
      routeId: gpt-5.6-luna-100-call-pack
      title: GPT-5.6 Luna 100 Prepaid Call Credits
      model: gpt-5.6-luna
      method: GET
      paidUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      checkoutUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      quoteOnlyUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      price: $1.60
      amountAtomic: '1600000'
      callCount: 100
      network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
      privateKeySentToService: false
      reason: Use one prepaid purchase for repeated GPT-5.6 Luna calls with fewer payment steps.
    label: GPT-5.6 Luna Standard one-request result
    page: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    json: https://gpt55.558686.xyz/x402/service.json
    checkoutUrl: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    quoteUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteEndpoint: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteEndpointMode: live-402
    firstPaymentClient: https://gpt55.558686.xyz/x402/first-payment-client.mjs
    paymentClientUrl: https://gpt55.558686.xyz/x402/first-payment-client.mjs
    paymentActivation: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    installCommand: npm install @x402/fetch @x402/core @x402/evm viem
    quoteOnlyDedicated: ROUTE_ID=standard MAX_USDC=0.00293 node first-payment-client.mjs
    realPaymentDedicated: PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    paymentHeaderOnlyDedicated: X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    installThenCreatePaymentHeaderDedicated: npm install @x402/fetch @x402/core @x402/evm viem && X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    downloadInstallThenCreatePaymentHeaderDedicated: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    payCommand: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    downloadInstallThenPayDedicated: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    expectedResult:
    - id
    - model
    - choices
    - usage
    - x-x402-receipt-id
    - x-x402-receipt-url
  x-demand-first-offer:
    id: standard-chat-demand-first
    routeId: standard-chat
    title: GPT-5.6 Luna Standard one-request result
    buyerJob: Get one immediate OpenAI-compatible answer before committing to a quota pack or a larger workflow.
    method: POST
    paidUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteOnlyUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    previewUrl: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    price: $0.00293
    priceUsd: 0.00293
    amountAtomic: '2930'
    network: eip155:8453
    asset: USDC
    assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
    payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
    input:
      contentType: application/json
      example:
        messages:
        - role: user
          content: Answer one concrete question in one short paragraph.
        max_tokens: 128
    resultFields:
    - id
    - model
    - choices
    - usage
    - x-x402-receipt-id
    - x-x402-receipt-url
    browserCheckout:
      available: true
      provider: EIP-1193 injected wallet
      type: eip3009-transfer-with-authorization
      url: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
      paidUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
      quoteOnlyUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
      bundleUrl: https://gpt55.558686.xyz/x402/browser-wallet-payment.js
      method: POST
      network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
      amountAtomic: '2930'
      paymentHeader: PAYMENT-SIGNATURE
      responseHeaders:
      - PAYMENT-RESPONSE
      - X-PAYMENT-RESPONSE
      - x-x402-receipt-id
      - x-x402-receipt-url
      privateKeySentToService: false
      buttonLabel: Pay with browser wallet
    agentFallback:
      routeId: standard
      firstPaymentClient: https://gpt55.558686.xyz/x402/first-payment-client.mjs
      quoteOnlyCommand: ROUTE_ID=standard MAX_USDC=0.00293 node first-payment-client.mjs
      realPaymentCommand: PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
      installCommand: npm install @x402/fetch @x402/core @x402/evm viem
      requiredRuntime: optional-desktop-or-server-terminal-fallback
      sameRequestRetry: true
      paymentHeaders:
      - PAYMENT-SIGNATURE
      - X-PAYMENT
      privateKeySentToService: false
    model: gpt-5.6-luna
    nextPurchase:
      id: gpt-5.6-luna-100-call-pack
      routeId: gpt-5.6-luna-100-call-pack
      title: GPT-5.6 Luna 100 Prepaid Call Credits
      model: gpt-5.6-luna
      method: GET
      paidUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      checkoutUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      quoteOnlyUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      price: $1.60
      amountAtomic: '1600000'
      callCount: 100
      network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
      privateKeySentToService: false
      reason: Use one prepaid purchase for repeated GPT-5.6 Luna calls with fewer payment steps.
    label: GPT-5.6 Luna Standard one-request result
    page: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    json: https://gpt55.558686.xyz/x402/service.json
    checkoutUrl: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    quoteUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteEndpoint: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteEndpointMode: live-402
    firstPaymentClient: https://gpt55.558686.xyz/x402/first-payment-client.mjs
    paymentClientUrl: https://gpt55.558686.xyz/x402/first-payment-client.mjs
    paymentActivation: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    installCommand: npm install @x402/fetch @x402/core @x402/evm viem
    quoteOnlyDedicated: ROUTE_ID=standard MAX_USDC=0.00293 node first-payment-client.mjs
    realPaymentDedicated: PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    paymentHeaderOnlyDedicated: X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    installThenCreatePaymentHeaderDedicated: npm install @x402/fetch @x402/core @x402/evm viem && X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    downloadInstallThenCreatePaymentHeaderDedicated: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    payCommand: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    downloadInstallThenPayDedicated: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    expectedResult:
    - id
    - model
    - choices
    - usage
    - x-x402-receipt-id
    - x-x402-receipt-url
  walletBalanceOffer:
    id: evm-wallet-balance-demand-first
    routeId: evm-wallet-balance
    title: EVM Wallet Balance Snapshot
    buyerJob: Check live ETH and canonical USDC balances, then decide whether a public wallet has enough Base USDC for the next $0.001 x402 payment.
    method: GET or POST
    paidUrl: https://gpt55.558686.xyz/v1/tools/evm-wallet-balance
    quoteOnlyUrl: https://gpt55.558686.xyz/v1/tools/evm-wallet-balance?address=0x1111111111111111111111111111111111111111&network=base
    previewUrl: https://gpt55.558686.xyz/x402/service?checkout=evm-wallet-balance
    price: $0.001
    priceUsd: 0.001
    amountAtomic: '1000'
    network: eip155:8453
    asset: USDC
    assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
    payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
    input:
      contentType: application/json
      required:
      - address
      optional:
      - network
      example:
        address: '0x1111111111111111111111111111111111111111'
        network: base
    resultFields:
    - network
    - chainId
    - address
    - blockNumber
    - nativeBalance
    - usdcBalance
    - x402Readiness
    - observedAt
    - rpcProviderHost
    readinessScope:
      balanceOnly: true
      suggestedPaymentAtomic: '1000'
      suggestedPaymentUsd: '0.001'
      fullDoctorUrl: https://gpt55.558686.xyz/v1/tools/x402-wallet-funding-readiness-doctor
      limitation: Does not prove payment-client, typed-data signing, spend-cap, or same-request retry readiness.
    browserCheckout:
      available: true
      provider: EIP-1193 injected wallet
      type: eip3009-transfer-with-authorization
      url: https://gpt55.558686.xyz/x402/service?checkout=evm-wallet-balance
      paidUrl: https://gpt55.558686.xyz/v1/tools/evm-wallet-balance
      quoteOnlyUrl: https://gpt55.558686.xyz/v1/tools/evm-wallet-balance?address=0x1111111111111111111111111111111111111111&network=base
      bundleUrl: https://gpt55.558686.xyz/x402/browser-wallet-payment.js
      method: POST
      body:
        address: '0x1111111111111111111111111111111111111111'
        network: base
      inputFields:
      - name: address
        type: text
        required: true
        source: connected wallet or public EVM address
      - name: network
        type: select
        required: false
        default: base
        options:
        - base
        - ethereum
      network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
      amountAtomic: '1000'
      paymentHeader: PAYMENT-SIGNATURE
      responseHeaders:
      - PAYMENT-RESPONSE
      - X-PAYMENT-RESPONSE
      - x-x402-receipt-id
      - x-x402-receipt-url
      privateKeySentToService: false
      buttonLabel: Pay with browser wallet
    agentFallback:
      routeId: evm-wallet-balance
      firstPaymentClient: https://gpt55.558686.xyz/x402/first-payment-client.mjs
      targetUrl: https://gpt55.558686.xyz/v1/tools/evm-wallet-balance?address=0x1111111111111111111111111111111111111111&network=base
      quoteOnlyCommand: TARGET_URL="https://gpt55.558686.xyz/v1/tools/evm-wallet-balance?address=0x1111111111111111111111111111111111111111&network=base" MAX_USDC=0.001 node first-payment-client.mjs
      realPaymentCommand: PAY_REAL_X402=1 TARGET_URL="https://gpt55.558686.xyz/v1/tools/evm-wallet-balance?address=0x1111111111111111111111111111111111111111&network=base" MAX_USDC=0.001 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
      installCommand: npm install @x402/fetch @x402/core @x402/evm viem
      requiredRuntime: optional-desktop-or-server-terminal-fallback
      sameRequestRetry: true
      paymentHeaders:
      - PAYMENT-SIGNATURE
      - X-PAYMENT
      privateKeySentToService: false
    nextPurchase:
      id: gpt-5.6-luna-100-call-pack
      routeId: gpt-5.6-luna-100-call-pack
      title: GPT-5.6 Luna 100 Prepaid Call Credits
      model: gpt-5.6-luna
      method: GET
      paidUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      checkoutUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      quoteOnlyUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      price: $1.60
      amountAtomic: '1600000'
      callCount: 100
      network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
      privateKeySentToService: false
      reason: Use one prepaid purchase for repeated GPT-5.6 Luna calls with fewer payment steps.
    compatibility:
      legacyRoutesPreserved: true
      standardChatUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
      standardChatPrice: $0.00293
      legacyPayTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
    label: EVM Wallet Balance Snapshot
    page: https://gpt55.558686.xyz/x402/service?checkout=evm-wallet-balance
    json: https://gpt55.558686.xyz/x402/service.json
    checkoutUrl: https://gpt55.558686.xyz/x402/service?checkout=evm-wallet-balance
    quoteUrl: https://gpt55.558686.xyz/v1/tools/evm-wallet-balance
    quoteEndpoint: https://gpt55.558686.xyz/v1/tools/evm-wallet-balance
    quoteEndpointMode: live-402
    firstPaymentClient: https://gpt55.558686.xyz/x402/first-payment-client.mjs
    paymentClientUrl: https://gpt55.558686.xyz/x402/first-payment-client.mjs
    paymentActivation: https://gpt55.558686.xyz/x402/service?checkout=evm-wallet-balance
    installCommand: npm install @x402/fetch @x402/core @x402/evm viem
    quoteOnlyDedicated: TARGET_URL="https://gpt55.558686.xyz/v1/tools/evm-wallet-balance?address=0x1111111111111111111111111111111111111111&network=base" MAX_USDC=0.001 node first-payment-client.mjs
    realPaymentDedicated: PAY_REAL_X402=1 TARGET_URL="https://gpt55.558686.xyz/v1/tools/evm-wallet-balance?address=0x1111111111111111111111111111111111111111&network=base" MAX_USDC=0.001 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    paymentHeaderOnlyDedicated: X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt TARGET_URL="https://gpt55.558686.xyz/v1/tools/evm-wallet-balance?address=0x1111111111111111111111111111111111111111&network=base" MAX_USDC=0.001 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    installThenCreatePaymentHeaderDedicated: npm install @x402/fetch @x402/core @x402/evm viem && X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt TARGET_URL="https://gpt55.558686.xyz/v1/tools/evm-wallet-balance?address=0x1111111111111111111111111111111111111111&network=base" MAX_USDC=0.001 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    downloadInstallThenCreatePaymentHeaderDedicated: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && X402_PAYMENT_HEADER_ONLY=1 X402_PAYMENT_HEADER_FILE=x402-payment-header.txt TARGET_URL="https://gpt55.558686.xyz/v1/tools/evm-wallet-balance?address=0x1111111111111111111111111111111111111111&network=base" MAX_USDC=0.001 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    payCommand: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && PAY_REAL_X402=1 TARGET_URL="https://gpt55.558686.xyz/v1/tools/evm-wallet-balance?address=0x1111111111111111111111111111111111111111&network=base" MAX_USDC=0.001 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    downloadInstallThenPayDedicated: curl -fsSL https://gpt55.558686.xyz/x402/first-payment-client.mjs -o first-payment-client.mjs && npm install @x402/fetch @x402/core @x402/evm viem && PAY_REAL_X402=1 TARGET_URL="https://gpt55.558686.xyz/v1/tools/evm-wallet-balance?address=0x1111111111111111111111111111111111111111&network=base" MAX_USDC=0.001 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
    expectedResult:
    - network
    - chainId
    - address
    - blockNumber
    - nativeBalance
    - usdcBalance
    - x402Readiness
    - observedAt
    - rpcProviderHost
  standardChatOffer:
    id: standard-chat-demand-first
    routeId: standard-chat
    title: GPT-5.6 Luna Standard one-request result
    buyerJob: Get one immediate OpenAI-compatible answer before committing to a quota pack or a larger workflow.
    method: POST
    paidUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    quoteOnlyUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
    previewUrl: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
    price: $0.00293
    priceUsd: 0.00293
    amountAtomic: '2930'
    network: eip155:8453
    asset: USDC
    assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
    payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
    input:
      contentType: application/json
      example:
        messages:
        - role: user
          content: Answer one concrete question in one short paragraph.
        max_tokens: 128
    resultFields:
    - id
    - model
    - choices
    - usage
    - x-x402-receipt-id
    - x-x402-receipt-url
    browserCheckout:
      available: true
      provider: EIP-1193 injected wallet
      type: eip3009-transfer-with-authorization
      url: https://gpt55.558686.xyz/x402/service?checkout=standard-chat
      paidUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
      quoteOnlyUrl: https://gpt55.558686.xyz/v1/chat/completions/standard
      bundleUrl: https://gpt55.558686.xyz/x402/browser-wallet-payment.js
      method: POST
      network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
      amountAtomic: '2930'
      paymentHeader: PAYMENT-SIGNATURE
      responseHeaders:
      - PAYMENT-RESPONSE
      - X-PAYMENT-RESPONSE
      - x-x402-receipt-id
      - x-x402-receipt-url
      privateKeySentToService: false
      buttonLabel: Pay with browser wallet
    agentFallback:
      routeId: standard
      firstPaymentClient: https://gpt55.558686.xyz/x402/first-payment-client.mjs
      quoteOnlyCommand: ROUTE_ID=standard MAX_USDC=0.00293 node first-payment-client.mjs
      realPaymentCommand: PAY_REAL_X402=1 ROUTE_ID=standard MAX_USDC=0.00293 EVM_PRIVATE_KEY=$EVM_PRIVATE_KEY node first-payment-client.mjs
      installCommand: npm install @x402/fetch @x402/core @x402/evm viem
      requiredRuntime: optional-desktop-or-server-terminal-fallback
      sameRequestRetry: true
      paymentHeaders:
      - PAYMENT-SIGNATURE
      - X-PAYMENT
      privateKeySentToService: false
    model: gpt-5.6-luna
    nextPurchase:
      id: gpt-5.6-luna-100-call-pack
      routeId: gpt-5.6-luna-100-call-pack
      title: GPT-5.6 Luna 100 Prepaid Call Credits
      model: gpt-5.6-luna
      method: GET
      paidUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      checkoutUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      quoteOnlyUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
      price: $1.60
      amountAtomic: '1600000'
      callCount: 100
      network: eip155:8453
      asset: USDC
      assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
      payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
      privateKeySentToService: false
      reason: Use one prepaid purchase for repeated GPT-5.6 Luna calls with fewer payment steps.
  x-gpt55-repeat-call-pack:
    id: gpt-5.6-luna-100-call-pack
    routeId: gpt-5.6-luna-100-call-pack
    title: GPT-5.6 Luna 100 Prepaid Call Credits
    model: gpt-5.6-luna
    method: GET
    paidUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
    checkoutUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
    quoteOnlyUrl: https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100
    price: $1.60
    amountAtomic: '1600000'
    callCount: 100
    network: eip155:8453
    asset: USDC
    assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
    payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
    privateKeySentToService: false
    reason: Use one prepaid purchase for repeated GPT-5.6 Luna calls with fewer payment steps.
  x-gpt55-canonical-links:
    repository: https://github.com/wangletiand/gpt55-x402-gateway
    githubPages: https://wangletiand.github.io/gpt55-x402-gateway/
    startApplyBuyUrl: https://gpt55.558686.xyz/x402/service
    unifiedServiceHub: https://gpt55.558686.xyz/x402/service
    unifiedServiceHubJson: https://gpt55.558686.xyz/x402/service.json
servers:
- url: https://gpt55.558686.xyz
tags:
- name: wallet-security
paths:
  /v1/paid/wallet-signing-safety-pack:
    get:
      operationId: walletSigningSafetyPackPaidGet
      summary: Quote or buy wallet signing safety pack via GET
      tags:
      - wallet-security
      description: High-intent GPT55 paid wallet signing safety route retained in OpenAPI for buyer-owned x402 checkout discovery. Returns a paid JSON decision with receipt evidence after a valid X-PAYMENT retry.
      parameters:
      - name: typed_data
        in: query
        required: false
        schema:
          type: string
      - name: data
        in: query
        required: false
        schema:
          type: string
      - name: chain
        in: query
        required: false
        schema:
          type: string
          default: base
      - name: max_usdc_per_call
        in: query
        required: false
        schema:
          type: number
          maximum: 0.02
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.018'
        protocols:
        - x402:
            network: eip155:8453
            asset: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
            payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
            amount: '18000'
            schemes:
            - exact
            - upto
            facilitator: provider-pool
            facilitatorPool:
            - id: dexter
              url: https://x402.dexter.cash
              status: frozen_settlement
              active: false
              networks:
              - eip155:8453
              - solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
              observedAt: '2026-07-19T16:04:32.063Z'
            - id: fluxa
              url: https://facilitator.fluxapay.xyz
              status: frozen_settlement
              active: false
              networks:
              - eip155:8453
              observedAt: '2026-07-19T16:04:32.063Z'
            - id: mogami
              url: https://v2.facilitator.mogami.tech
              status: frozen_unreachable
              active: false
              networks:
              - eip155:8453
              observedAt: '2026-09-18T08:31:22.080Z'
            - id: primer
              url: https://x402.primer.systems
              status: frozen_unreachable
              active: false
              networks:
              - eip155:8453
              observedAt: '2026-09-18T08:31:22.080Z'
            - id: xpay
              url: https://facilitator.xpay.sh
              status: enabled
              active: true
              networks:
              - eip155:8453
              observedAt: '2026-09-18T08:36:32.152Z'
            - id: payai
              url: https://facilitator.payai.network
              status: frozen_quota
              active: false
              networks:
              - eip155:8453
              - solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
              observedAt: '2026-09-18T08:36:32.152Z'
            - id: kobaru
              url: https://gateway.kobaru.io
              status: frozen_unreachable
              active: false
              networks:
              - eip155:8453
              - solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
              observedAt: '2026-09-18T08:31:22.080Z'
            - id: cdp
              url: https://api.cdp.coinbase.com/platform/v2/x402
              status: frozen_unreachable
              active: false
              networks:
              - eip155:8453
              - solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
              observedAt: '2026-08-29T17:17:22.202Z'
            - id: solvador
              url: https://api.solvador.com
              status: disabled
              active: false
              networks: []
            fallbackFacilitators:
            - https://facilitator.xpay.sh
      responses:
        '200':
          description: Paid wallet signing safety decision JSON with receipt evidence
          content:
            application/json:
              schema:
                type: object
                properties:
                  decision:
                    type: string
                  riskLevel:
                    type: string
                  riskFlags:
                    type: array
                    items:
                      type: string
                  paymentPolicyDecision:
                    type: object
                    additionalProperties: true
                  agentEnforcementPayload:
                    type: object
                    additionalProperties: true
                  receiptEvidence:
                    type: object
                    additionalProperties: true
                  buyerActionChecklist:
                    type: array
                    items:
                      type: string
                  purchaseResultCard:
                    type: object
                    properties:
                      receiptEvidence:
                        type: object
                        additionalProperties: true
                    additionalProperties: true
                  repeatPurchaseContract:
                    type: object
                    additionalProperties: true
                required:
                - decision
                - riskLevel
                - paymentPolicyDecision
                - agentEnforcementPayload
                - receiptEvidence
                - buyerActionChecklist
                - purchaseResultCard
                - repeatPurchaseContract
                additionalProperties: true
              example:
                decision: allow
                riskLevel: low
                riskFlags: []
                paymentPolicyDecision:
                  safeToPay: true
                  maxUsdcPerCall: 0.02
                agentEnforcementPayload:
                  routeId: wallet-signing-safety-pack
                  action: allow_or_manual_review_before_signing
                receiptEvidence:
                  receiptRequired: true
                  receiptHeader: x-x402-receipt-id
                  receiptUrlTemplate: https://gpt55.558686.xyz/x402/receipts/{receiptId}
                buyerActionChecklist:
                - Confirm amountAtomic is 18000
                - Confirm network is eip155:8453
                - Retry with X-PAYMENT only from a buyer-owned wallet
                purchaseResultCard:
                  productId: wallet-signing-safety-pack
                  receiptEvidence:
                    expectedHeaders:
                    - x-x402-receipt-id
                    - x-x402-receipt-url
                    - X-PAYMENT-RESPONSE
                repeatPurchaseContract:
                  productId: wallet-signing-safety-pack
                  receiptRequiredForReuse: true
                  mustRepurchaseWhen:
                  - new spender
                  - new typed data
                  - new calldata approval
                  - new x402 prepay policy
        '402':
          description: x402 payment required; retry the same request with X-PAYMENT from a buyer-owned wallet
      x-x402-price: $0.018
    post:
      operationId: walletSigningSafetyPackPaidPost
      summary: Buy wallet signing safety pack via POST
      tags:
      - wallet-security
      description: High-intent GPT55 paid wallet signing safety route retained in OpenAPI for buyer-owned x402 checkout discovery. Returns a paid JSON decision with receipt evidence after a valid X-PAYMENT retry.
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: object
              properties:
                typed_data:
                  type: string
                data:
                  type: string
                chain:
                  type: string
                  default: base
                max_usdc_per_call:
                  type: number
                  maximum: 0.02
              additionalProperties: true
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.018'
        protocols:
        - x402:
            network: eip155:8453
            asset: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
            payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
            amount: '18000'
            schemes:
            - exact
            - upto
            facilitator: provider-pool
            facilitatorPool:
            - id: dexter
              url: https://x402.dexter.cash
              status: frozen_settlement
              active: false
              networks:
              - eip155:8453
              - solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
              observedAt: '2026-07-19T16:04:32.063Z'
            - id: fluxa
              url: https://facilitator.fluxapay.xyz
              status: frozen_settlement
              active: false
              networks:
              - eip155:8453
              observedAt: '2026-07-19T16:04:32.063Z'
            - id: mogami
              url: https://v2.facilitator.mogami.tech
              status: frozen_unreachable
              active: false
              networks:
              - eip155:8453
              observedAt: '2026-09-18T08:31:22.080Z'
            - id: primer
              url: https://x402.primer.systems
              status: frozen_unreachable
              active: false
              networks:
              - eip155:8453
              observedAt: '2026-09-18T08:31:22.080Z'
            - id: xpay
              url: https://facilitator.xpay.sh
              status: enabled
              active: true
              networks:
              - eip155:8453
              observedAt: '2026-09-18T08:36:32.152Z'
            - id: payai
              url: https://facilitator.payai.network
              status: frozen_quota
              active: false
              networks:
              - eip155:8453
              - solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
              observedAt: '2026-09-18T08:36:32.152Z'
            - id: kobaru
              url: https://gateway.kobaru.io
              status: frozen_unreachable
              active: false
              networks:
              - eip155:8453
              - solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
              observedAt: '2026-09-18T08:31:22.080Z'
            - id: cdp
              url: https://api.cdp.coinbase.com/platform/v2/x402
              status: frozen_unreachable
              active: false
              networks:
              - eip155:8453
              - solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
              observedAt: '2026-08-29T17:17:22.202Z'
            - id: solvador
              url: https://api.solvador.com
              status: disabled
              active: false
              networks: []
            fallbackFacilitators:
            - https://facilitator.xpay.sh
      responses:
        '200':
          description: Paid wallet signing safety decision JSON with receipt evidence
          content:
            application/json:
              schema:
                type: object
                properties:
                  decision:
                    type: string
                  riskLevel:
                    type: string
                  riskFlags:
                    type: array
                    items:
                      type: string
                  paymentPolicyDecision:
                    type: object
                    additionalProperties: true
                  agentEnforcementPayload:
                    type: object
                    additionalProperties: true
                  receiptEvidence:
                    type: object
                    additionalProperties: true
                  buyerActionChecklist:
                    type: array
                    items:
                      type: string
                  purchaseResultCard:
                    type: object
                    properties:
                      receiptEvidence:
                        type: object
                        additionalProperties: true
                    additionalProperties: true
                  repeatPurchaseContract:
                    type: object
                    additionalProperties: true
                required:
                - decision
                - riskLevel
                - paymentPolicyDecision
                - agentEnforcementPayload
                - receiptEvidence
                - buyerActionChecklist
                - purchaseResultCard
                - repeatPurchaseContract
                additionalProperties: true
              example:
                decision: allow
                riskLevel: low
                riskFlags: []
                paymentPolicyDecision:
                  safeToPay: true
                  maxUsdcPerCall: 0.02
                agentEnforcementPayload:
                  routeId: wallet-signing-safety-pack
                  action: allow_or_manual_review_before_signing
                receiptEvidence:
                  receiptRequired: true
                  receiptHeader: x-x402-receipt-id
                  receiptUrlTemplate: https://gpt55.558686.xyz/x402/receipts/{receiptId}
                buyerActionChecklist:
                - Confirm amountAtomic is 18000
                - Confirm network is eip155:8453
                - Retry with X-PAYMENT only from a buyer-owned wallet
                purchaseResultCard:
                  productId: wallet-signing-safety-pack
                  receiptEvidence:
                    expectedHeaders:
                    - x-x402-receipt-id
                    - x-x402-receipt-url
                    - X-PAYMENT-RESPONSE
                repeatPurchaseContract:
                  productId: wallet-signing-safety-pack
                  receiptRequiredForReuse: true
                  mustRepurchaseWhen:
                  - new spender
                  - new typed data
                  - new calldata approval
                  - new x402 prepay policy
        '402':
          description: x402 payment required; retry the same request with X-PAYMENT from a buyer-owned wallet
      x-x402-price: $0.018
externalDocs:
  description: GPT55 unified buyer service hub
  url: https://gpt55.558686.xyz/x402/service
x-x402-compatibility:
  index: https://gpt55.558686.xyz/x402/compatibility.json
  contracts:
  - projectId: x402-utility-tools
    status: retired_consolidated
    historicalOrigin: https://x402-utils.558686.xyz
    canonicalOrigin: https://gpt55.558686.xyz
    retirementNotice: https://x402-utils.558686.xyz/.well-known/x402
    paidRoutesAvailableOnHistoricalHost: false
  - projectId: x402-agent-wallet-tools
    status: retired_consolidated
    historicalOrigin: https://x402-wallet.558686.xyz
    canonicalOrigin: https://gpt55.558686.xyz
    retirementNotice: https://x402-wallet.558686.xyz/.well-known/x402
    paidRoutesAvailableOnHistoricalHost: false
  - projectId: x402-seller-growth-tools
    status: retired_consolidated
    historicalOrigin: https://x402-seller.558686.xyz
    canonicalOrigin: https://gpt55.558686.xyz
    retirementNotice: https://x402-seller.558686.xyz/.well-known/x402
    paidRoutesAvailableOnHistoricalHost: false
  - projectId: x402-key-url-tools
    status: retired_consolidated
    historicalOrigin: https://x402-key.558686.xyz
    canonicalOrigin: https://gpt55.558686.xyz
    retirementNotice: https://x402-key.558686.xyz/.well-known/x402
    paidRoutesAvailableOnHistoricalHost: false