x402-payment-debug

Your 402 envelope can pass every static check and still not get you paid. We build a real signed payment at your listed price and submit it to the CDP facilitator verify endpoint, which checks signature, requirements and the on-chain transfer simulation. Nothing settles, so no money moves. You get back whether a real payment would be accepted, and if not, the facilitator own reason verbatim. Pass ?url= or ?domain=.

Resource: x402.dailyelo.com/v1/payment/debug

Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0xD617a7145ca56E3ed58d639F9DEC6999B22441eE

Payment methods: — · Last validation: 2026-09-14 16:41:48.975+00

{
  "input": {
    "type": "object",
    "required": [
      "type",
      "method"
    ],
    "properties": {
      "type": {
        "type": "string",
        "const": "http"
      },
      "method": {
        "enum": [
          "GET"
        ],
        "type": "string"
      },
      "queryParams": {
        "type": "object",
        "properties": {
          "url": {
            "type": "string",
            "description": "your endpoint URL"
          },
          "domain": {
            "type": "string",
            "description": "or just your domain"
          }
        },
        "description": "Would a real payment to your x402 endpoint actually be accepted? We build a signed payment at your listed price and submit it to the CDP facilitator's verify endpoint — signature, requirements and on-chain transfer simulation. Nothing settles, so no money moves. If it fails you get the facilitator's own reason verbatim. ?url= or ?domain=; omit for market-wide stats."
      }
    },
    "additionalProperties": false
  },
  "output": {
    "type": "object",
    "required": [
      "type"
    ],
    "properties": {
      "type": {
        "type": "string"
      },
      "example": {
        "type": "object"
      }
    }
  },
  "paymentRequirements": [
    {
      "raw": {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0xD617a7145ca56E3ed58d639F9DEC6999B22441eE",
        "amount": "250000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      },
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0xD617a7145ca56E3ed58d639F9DEC6999B22441eE",
      "scheme": "exact",
      "network": "eip155:8453",
      "amountAtomic": "250000"
    }
  ]
}

Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.