api.aitrailblazer.net

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "ok": false,
  "error": "payment_required",
  "route": "GET /v1/top-stressed",
  "docs_url": "https://developers.circle.com/gateway/nanopayments/quickstarts/seller",
  "retry_hint": "Standard Coinbase CDP Base x402 remains accepts[0] for compatibility. Circle-aware buyers may explicitly select the GatewayWalletBatched requirement. Stripe Checkout is an out-of-band fallback and is never automatic.",
  "circle_gateway": {
    "docs": {
      "seller_quickstart": "https://developers.circle.com/gateway/nanopayments/quickstarts/seller",
      "x402_seller_howto": "https://developers.circle.com/gateway/nanopayments/howtos/x402-seller"
    },
    "role": "preferred_optimized",
    "asset": "USDC",
    "payTo": "0x6D91ADF2c545047cbbC5b37a5f457cce081B48d3",
    "status": "live_facilitator_configured",
    "enabled": true,
    "network": "eip155:8453",
    "priority": 1,
    "facilitator": "https://gateway-api.circle.com/v1",
    "api_key_mode": "live",
    "live_enabled": true,
    "challengePosition": "after_standard_x402",
    "verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
    "buyerSelectionMode": "capability_or_explicit_provider_selection",
    "paymentRequirement": "GatewayWalletBatched",
    "settlement_enabled": true,
    "sellerImplementation": "circle_gateway_compatibility_surface"
  },
  "x402_challenge": "see response headers",
  "free_tier_state": "no active free-tier grant was attached to this request",
  "payment_provider_priority": [
    {
      "role": "preferred_optimized",
      "priority": 1,
      "provider": "Circle",
      "payment_mode": "circle_gateway_batched",
      "selection_mode": "capability_or_explicit_provider_selection",
      "challenge_position": "second_when_settlement_enabled"
    },
    {
      "role": "compatibility_default",
      "priority": 2,
      "provider": "Coinbase CDP",
      "payment_mode": "base_x402_exact",
      "selection_mode": "safe_default_for_first_entry_clients",
      "challenge_position": "first"
    },
    {
      "role": "last_resort",
      "priority": 3,
      "provider": "Stripe",
      "payment_mode": "checkout_session",
      "automatic_failover": false,
      "challenge_position": "not_in_x402_challenge",
      "integration_status": "separate_checkout_integration_required",
      "requires_user_action": true
    }
  ]
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x6D91ADF2c545047cbbC5b37a5f457cce081B48d3",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  },
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "GatewayWalletBatched",
      "asset": "USDC",
      "version": "1",
      "verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
      "minValiditySeconds": 604800
    },
    "payTo": "0x6D91ADF2c545047cbbC5b37a5f457cce081B48d3",
    "amount": "50000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 604800
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "limit": 5
        }
      },
      "output": {
        "type": "json",
        "example": {
          "data": [
            {
              "ticker": "GME",
              "risk_tier": "CRITICAL",
              "stress_50pct": 5.1841
            },
            {
              "ticker": "WULF",
              "risk_tier": "CRITICAL",
              "stress_50pct": 3.9124
            }
          ]
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "properties": {
                "limit": {
                  "type": "integer"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    },
    "routeTemplate": "/v1/top-stressed"
  }
}

Provenance

Seen in the source catalog

2026-09-23 02:11Z

Last indexed by Roundhouse

2026-09-24 08:50Z

Last enriched (probe, favicon, geo)

2026-09-14 11:15Z

x402 version

2

Max timeout

60s

Liveness probe

HTTP 402