openapi: 3.2.0
info:
  title: GPT55 Model Gateway Gpt55 Retained Nonmodel 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: gpt55-retained-nonmodel
paths:
  /v1/tools/timestamp:
    get:
      operationId: v1ToolsTimestamp
      summary: timestamp
      tags:
      - gpt55-retained-nonmodel
      parameters:
      - name: quote_only
        in: query
        required: false
        description: Optional directory probe hint. An unpaid request still returns the normal x402 payment challenge.
        schema:
          type: boolean
          default: true
      responses:
        '200':
          description: Successful GPT55 route response
        '402':
          description: x402 payment required
      x-x402-price: $0.002
  /v1/tools/query-parse:
    get:
      operationId: v1ToolsQueryParse
      summary: query parse
      tags:
      - gpt55-retained-nonmodel
      parameters:
      - name: quote_only
        in: query
        required: false
        description: Optional directory probe hint. An unpaid request still returns the normal x402 payment challenge.
        schema:
          type: boolean
          default: true
      responses:
        '200':
          description: Successful GPT55 route response
        '402':
          description: x402 payment required
      x-x402-price: $0.002
  /v1/tools/evm-wallet-balance:
    get:
      operationId: v1ToolsEvmWalletBalanceGet
      summary: EVM Wallet Balance Snapshot
      tags:
      - gpt55-retained-nonmodel
      parameters:
      - name: address
        in: query
        required: true
        description: Public EVM wallet address to inspect.
        schema:
          type: string
          pattern: ^0x[0-9a-fA-F]{40}$
      - name: network
        in: query
        required: false
        description: Balance network. Defaults to Base.
        schema:
          type: string
          enum:
          - base
          - ethereum
          - eip155:8453
          - eip155:1
          default: base
      - name: quote_only
        in: query
        required: false
        description: Optional directory probe hint. An unpaid request still returns the normal x402 payment challenge.
        schema:
          type: boolean
          default: true
      description: Read native ETH and canonical USDC balances, plus balance-only readiness for the next $0.001 Base x402 payment.
      x-output-fields:
      - network
      - chainId
      - address
      - blockNumber
      - nativeBalance
      - usdcBalance
      - x402Readiness
      - observedAt
      - rpcProviderHost
      x-gpt55-product:
        id: evm-wallet-balance-demand-first
        price: $0.001
        amountAtomic: '1000'
        deterministic: true
        upstreamModelCall: false
        readinessScope: balance-only
        suggestedPaymentAtomic: '1000'
        fundingReadinessDoctor: https://gpt55.558686.xyz/v1/tools/x402-wallet-funding-readiness-doctor
      responses:
        '200':
          description: Successful GPT55 route response
          content:
            application/json:
              schema:
                type: object
                properties:
                  ok:
                    type: boolean
                  tool:
                    type: string
                    const: evmWalletBalance
                  network:
                    type: string
                    enum:
                    - base
                    - ethereum
                  chainId:
                    type: string
                    enum:
                    - eip155:8453
                    - eip155:1
                  address:
                    type: string
                    pattern: ^0x[0-9a-f]{40}$
                  blockNumber:
                    type: string
                    pattern: ^[0-9]+$
                  nativeBalance:
                    type: object
                  usdcBalance:
                    type: object
                  x402Readiness:
                    type: object
                    properties:
                      assessment:
                        type: string
                        enum:
                        - balance_ready
                        - funding_required
                        - switch_to_base
                      balanceOnly:
                        type: boolean
                        const: true
                      suggestedPayment:
                        type: object
                        properties:
                          network:
                            type: string
                            const: eip155:8453
                          asset:
                            type: string
                            const: USDC
                          amountAtomic:
                            type: string
                            const: '1000'
                          amountUsd:
                            type: string
                            const: '0.001'
                        required:
                        - network
                        - asset
                        - amountAtomic
                        - amountUsd
                        additionalProperties: false
                      walletNetworkMatches:
                        type: boolean
                      canCoverSuggestedX402Amount:
                        type: boolean
                      usdcRunwayAtSuggestedAmount:
                        type: string
                        pattern: ^[0-9]+$
                      shortfall:
                        type: object
                      nativeGasPresent:
                        type: boolean
                      limitations:
                        type: array
                        items:
                          type: string
                        minItems: 1
                      fundingReadinessDoctor:
                        type: object
                        properties:
                          paidUrl:
                            type: string
                            const: https://gpt55.558686.xyz/v1/tools/x402-wallet-funding-readiness-doctor
                          guideUrl:
                            type: string
                            const: https://gpt55.558686.xyz/x402/wallet-funding-readiness-doctor
                        required:
                        - paidUrl
                        - guideUrl
                        additionalProperties: false
                    required:
                    - assessment
                    - balanceOnly
                    - suggestedPayment
                    - walletNetworkMatches
                    - canCoverSuggestedX402Amount
                    - usdcRunwayAtSuggestedAmount
                    - shortfall
                    - nativeGasPresent
                    - limitations
                    - fundingReadinessDoctor
                    additionalProperties: false
                  observedAt:
                    type: string
                    format: date-time
                  rpcProviderHost:
                    type: string
                required:
                - ok
                - tool
                - network
                - chainId
                - address
                - blockNumber
                - nativeBalance
                - usdcBalance
                - x402Readiness
                - observedAt
                additionalProperties: true
        '402':
          description: x402 payment required
      x-x402-price: $0.001
    post:
      operationId: v1ToolsEvmWalletBalancePost
      summary: EVM Wallet Balance Snapshot
      tags:
      - gpt55-retained-nonmodel
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                address:
                  type: string
                  pattern: ^0x[0-9a-fA-F]{40}$
                network:
                  type: string
                  enum:
                  - base
                  - ethereum
                  - eip155:8453
                  - eip155:1
                  default: base
              required:
              - address
              additionalProperties: false
      description: Read native ETH and canonical USDC balances, plus balance-only readiness for the next $0.001 Base x402 payment.
      x-output-fields:
      - network
      - chainId
      - address
      - blockNumber
      - nativeBalance
      - usdcBalance
      - x402Readiness
      - observedAt
      - rpcProviderHost
      x-gpt55-product:
        id: evm-wallet-balance-demand-first
        price: $0.001
        amountAtomic: '1000'
        deterministic: true
        upstreamModelCall: false
        readinessScope: balance-only
        suggestedPaymentAtomic: '1000'
        fundingReadinessDoctor: https://gpt55.558686.xyz/v1/tools/x402-wallet-funding-readiness-doctor
      responses:
        '200':
          description: Successful GPT55 route response
          content:
            application/json:
              schema:
                type: object
                properties:
                  ok:
                    type: boolean
                  tool:
                    type: string
                    const: evmWalletBalance
                  network:
                    type: string
                    enum:
                    - base
                    - ethereum
                  chainId:
                    type: string
                    enum:
                    - eip155:8453
                    - eip155:1
                  address:
                    type: string
                    pattern: ^0x[0-9a-f]{40}$
                  blockNumber:
                    type: string
                    pattern: ^[0-9]+$
                  nativeBalance:
                    type: object
                  usdcBalance:
                    type: object
                  x402Readiness:
                    type: object
                    properties:
                      assessment:
                        type: string
                        enum:
                        - balance_ready
                        - funding_required
                        - switch_to_base
                      balanceOnly:
                        type: boolean
                        const: true
                      suggestedPayment:
                        type: object
                        properties:
                          network:
                            type: string
                            const: eip155:8453
                          asset:
                            type: string
                            const: USDC
                          amountAtomic:
                            type: string
                            const: '1000'
                          amountUsd:
                            type: string
                            const: '0.001'
                        required:
                        - network
                        - asset
                        - amountAtomic
                        - amountUsd
                        additionalProperties: false
                      walletNetworkMatches:
                        type: boolean
                      canCoverSuggestedX402Amount:
                        type: boolean
                      usdcRunwayAtSuggestedAmount:
                        type: string
                        pattern: ^[0-9]+$
                      shortfall:
                        type: object
                      nativeGasPresent:
                        type: boolean
                      limitations:
                        type: array
                        items:
                          type: string
                        minItems: 1
                      fundingReadinessDoctor:
                        type: object
                        properties:
                          paidUrl:
                            type: string
                            const: https://gpt55.558686.xyz/v1/tools/x402-wallet-funding-readiness-doctor
                          guideUrl:
                            type: string
                            const: https://gpt55.558686.xyz/x402/wallet-funding-readiness-doctor
                        required:
                        - paidUrl
                        - guideUrl
                        additionalProperties: false
                    required:
                    - assessment
                    - balanceOnly
                    - suggestedPayment
                    - walletNetworkMatches
                    - canCoverSuggestedX402Amount
                    - usdcRunwayAtSuggestedAmount
                    - shortfall
                    - nativeGasPresent
                    - limitations
                    - fundingReadinessDoctor
                    additionalProperties: false
                  observedAt:
                    type: string
                    format: date-time
                  rpcProviderHost:
                    type: string
                required:
                - ok
                - tool
                - network
                - chainId
                - address
                - blockNumber
                - nativeBalance
                - usdcBalance
                - x402Readiness
                - observedAt
                additionalProperties: true
        '402':
          description: x402 payment required
      x-x402-price: $0.001
    head:
      operationId: v1ToolsEvmWalletBalanceHead
      summary: EVM Wallet Balance Snapshot
      tags:
      - gpt55-retained-nonmodel
      parameters:
      - name: address
        in: query
        required: true
        description: Public EVM wallet address to inspect.
        schema:
          type: string
          pattern: ^0x[0-9a-fA-F]{40}$
      - name: network
        in: query
        required: false
        description: Balance network. Defaults to Base.
        schema:
          type: string
          enum:
          - base
          - ethereum
          - eip155:8453
          - eip155:1
          default: base
      - name: quote_only
        in: query
        required: false
        description: Optional directory probe hint. An unpaid request still returns the normal x402 payment challenge.
        schema:
          type: boolean
          default: true
      description: Read native ETH and canonical USDC balances, plus balance-only readiness for the next $0.001 Base x402 payment.
      x-output-fields:
      - network
      - chainId
      - address
      - blockNumber
      - nativeBalance
      - usdcBalance
      - x402Readiness
      - observedAt
      - rpcProviderHost
      x-gpt55-product:
        id: evm-wallet-balance-demand-first
        price: $0.001
        amountAtomic: '1000'
        deterministic: true
        upstreamModelCall: false
        readinessScope: balance-only
        suggestedPaymentAtomic: '1000'
        fundingReadinessDoctor: https://gpt55.558686.xyz/v1/tools/x402-wallet-funding-readiness-doctor
      responses:
        '200':
          description: Successful GPT55 route response
        '402':
          description: x402 payment required
      x-x402-price: $0.001
  /v1/tools/x402-mcp-integration-kit:
    post:
      operationId: v1ToolsX402McpIntegrationKit
      summary: x402 mcp integration kit
      tags:
      - gpt55-retained-nonmodel
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: object
              properties:
                base_url:
                  type: string
                  format: uri
                  default: https://gpt55.558686.xyz
                service_name:
                  type: string
                  default: GPT55 Model Gateway
                max_usdc_per_call:
                  type: number
                  minimum: 0
                  default: 0.02
                preferred_endpoint:
                  type: string
                  format: uri
                  default: https://gpt55.558686.xyz/v1/chat/completions
              additionalProperties: true
            example:
              base_url: https://gpt55.558686.xyz
              service_name: GPT55 Model Gateway
              max_usdc_per_call: 0.02
              preferred_endpoint: https://gpt55.558686.xyz/v1/chat/completions
      description: Deterministic MCP and x402 buyer onboarding package with Claude, curl, spend-cap, payment-client, and receipt-gate configuration. No upstream model call is made.
      x-output-example:
        ok: true
        tool: x402McpIntegrationKit
        paidResult: true
        mcpRuntimeInstallPlan:
          remoteMcpServer: https://gpt55.558686.xyz/mcp
          configUrl: https://gpt55.558686.xyz/mcp/config
          claudeDesktopConfigJson: '{"mcpServers":{"gpt-5-6-x402-gateway":{"type":"streamable-http","url":"https://gpt55.558686.xyz/mcp"}}}'
        buyerMcpExecutionContract:
          quoteBeforeToolCall: true
          sameRequestRetry: true
          expectedNetwork: eip155:8453
          expectedAsset: USDC
          expectedPayTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
          authType: x402 payment header, not API key
        receiptGate:
          requiredAfterPayment: true
          requiredHeaders:
          - x-x402-receipt-id
          - x-x402-receipt-url
          receiptUrlTemplate: https://gpt55.558686.xyz/x402/receipts/{receiptId}
        mcpPaidToolOnboardingPackage:
          version: 2026-07-13.mcp-paid-tool-onboarding.v1
          buyerOwnedRuntime: true
          paymentSentByThisService: false
          includes:
          - claudeDesktopConfigJson
          - x402PaymentClientHandoff
          - spendPolicy
          - receiptGateConfig
          - firstPaidCallRunbook
          - firstPurchaseSuccessCriteria
          - officialClientCompatibility
        claudeDesktopConfigJson: '{"mcpServers":{"gpt-5-6-x402-gateway":{"type":"streamable-http","url":"https://gpt55.558686.xyz/mcp"}}}'
        x402PaymentClientHandoff:
          quoteFirst: true
          paidEndpoint: https://gpt55.558686.xyz/v1/tools/x402-mcp-integration-kit
          paymentHeader: X-PAYMENT
          privateKeySentToService: false
          paymentSentByThisService: false
        spendPolicy:
          maxUsdcPerCall: 0.02
          network: eip155:8453
          asset: USDC
          payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
          stopOnMismatch: true
        receiptGateConfig:
          requiredHeaders:
          - x-x402-receipt-id
          - x-x402-receipt-url
          storeReceiptWithPaidResult: true
          receiptUrlTemplate: https://gpt55.558686.xyz/x402/receipts/{receiptId}
        firstPaidCallRunbook:
        - Fetch the paid endpoint without X-PAYMENT and read the HTTP 402 quote.
        - Verify amount, payTo, network, asset, and the buyer spend cap.
        - Retry the exact same method, URL, body, and content-type with a buyer-owned X-PAYMENT header.
        - Store x-x402-receipt-id and x-x402-receipt-url with the paid result before installing the MCP config.
        firstPurchaseSuccessCriteria:
          quoteStep: HTTP 402 includes amount, payTo, network, asset, and accepted scheme.
          paymentStep: Retry the exact same request with X-PAYMENT created by the buyer wallet.
          paidStep: HTTP 200 JSON includes the MCP install plan and receipt gate fields.
          receiptHeaders:
          - x-x402-receipt-id
          - x-x402-receipt-url
        officialClientCompatibility:
          header: X-PAYMENT
          quoteFirst: true
          sameRequestRetry: true
          privateKeySentToService: false
          retryInvariant:
          - method
          - url
          - body
          - content-type
        sameRequestRetry:
          method: POST
          url: https://gpt55.558686.xyz/v1/tools/x402-mcp-integration-kit
          keepUnchanged:
          - method
          - url
          - body
          - content-type
          addHeader: X-PAYMENT
        receiptEvidence:
          required: true
          headers:
          - x-x402-receipt-id
          - x-x402-receipt-url
          example:
            x-x402-receipt-id: '{receiptId}'
      x-gpt55-product:
        id: mcp-integration-kit
        price: $0.006
        amountAtomic: '6000'
        deterministic: true
        upstreamModelCall: false
        guide: https://gpt55.558686.xyz/x402/mcp-first-purchase-kit
        firstPaymentClient: https://gpt55.558686.xyz/x402/first-payment-client.mjs
        privateKeySentToService: false
      responses:
        '200':
          description: Successful GPT55 route response
        '402':
          description: x402 payment required
      x-x402-price: $0.006
  /v1/tools/x402-bazaar-search:
    post:
      operationId: v1ToolsX402BazaarSearch
      summary: x402 bazaar search
      tags:
      - gpt55-retained-nonmodel
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                query:
                  type: string
                  minLength: 1
                  maxLength: 120
                pay_to:
                  type: string
                  minLength: 1
                  maxLength: 80
                payTo:
                  type: string
                  minLength: 1
                  maxLength: 80
                include_all:
                  type: boolean
                include_live_prices:
                  type: boolean
                sort:
                  type: string
                  enum:
                  - relevance
                  - price
                  - activity
                limit:
                  type: integer
                  minimum: 1
                  maximum: 20
                timeout_ms:
                  type: integer
                  minimum: 1000
                  maximum: 12000
              required:
              - query
              additionalProperties: false
            examples:
              simple:
                value:
                  query: real-time web search
                  sort: relevance
                  include_live_prices: true
                  limit: 10
      description: Deterministic buyer-facing search over CDP x402 Bazaar resources. Returns relevance-preserving results with live price checks, 30-day calls, unique payers, calls-per-payer, freshness, schemes, networks, and payTo signals. No upstream model call is made.
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.004'
        protocols:
        - x402:
            network: eip155:8453
            asset: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
            payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
            amount: '4000'
            schemes:
            - exact
            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
      x-discovery:
        payment:
          protocol: x402
          price: $0.004
          amountAtomic: '4000'
          network: eip155:8453
          asset: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
          payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
        ownershipProofs:
        - https://gpt55.558686.xyz/.well-known/x402-service
        - https://gpt55.558686.xyz/.well-known/x402
        buyerSignals:
        - relevance-preserving market search
        - live price freshness checks
        - 30-day calls and unique payers
        - calls-per-payer repeat-use signal
      x-model-tier:
        tier: standard
        model: no-upstream-deterministic
      x-gpt55-product:
        id: x402-bazaar-search
        routeId: x402-bazaar-search
        price: $0.004
        amountAtomic: '4000'
        deterministic: true
        upstreamModelCall: false
        method: POST
        network: eip155:8453
        asset: USDC
        assetAddress: '0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913'
        payTo: '0x1f0130669ca6fd02e025a984cc038f139df19a2f'
        buyerJob: Find and compare live x402 services before spending on a downstream API or agent workflow.
        outputSignals:
        - resources
        - quality
        - livePricing
        - warnings
        - partialResults
        guide: https://gpt55.558686.xyz/x402/service
      x-output-fields:
      - resources
      - quality.l30DaysTotalCalls
      - quality.l30DaysUniquePayers
      - quality.callsPerPayer
      - quality.freshnessDays
      - livePricing
      - warnings
      - partialResults
      responses:
        '200':
          description: Successful GPT55 route response
        '402':
          description: x402 payment required
      x-x402-price: $0.004
  /v1/paid/wallet-payment-activation-agent:
    get:
      operationId: v1PaidWalletPaymentActivationAgent
      summary: Wallet Payment Activation Agent
      tags:
      - gpt55-retained-nonmodel
      parameters:
      - name: quote_only
        in: query
        required: false
        description: Optional directory probe hint. An unpaid request still returns the normal x402 payment challenge.
        schema:
          type: boolean
          default: true
      description: Quote-only wallet payment activation agent that returns buyer-owned X-PAYMENT activation clients, MCP config, Flowise node config, and receipt gate policy.
      x-gpt55-product:
        id: wallet-payment-activation-agent
        price: $2.90
        amountAtomic: '2900000'
        deterministic: true
        upstreamModelCall: false
      responses:
        '200':
          description: Successful GPT55 route response
        '402':
          description: x402 payment required
      x-x402-price: $2.90
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