FETCH402
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Resource / 977

healthy

Agent Trust Verify.

GET https://mudko.com/api/x402/verify-counterparty ↗

Counterparty trust verification for agents: before transacting with a domain, verify its trust artifacts — DNSSEC + DNS-AID records, agent-card, live MCP endpoint, published JWKS, OASF record, x402/commerce declarations. Returns a 0-100 trust score with per-artifact evidence. $0.25 per lookup.

Eligibility
probeable
Failures
0
Last quote
2026-08-13 06:00:02 UTC
Last probe
2026-08-13 06:00:02 UTC
Payment requirements / accepts[] 1 options
State Network Scheme Atomic amount Asset payTo / untrusted
active eip155:8453 exact 250000 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 0x53598173ce7c26025bab0520d9e9d0c28fbcf7de

All advertised payment options are stored. Base (`eip155:8453`) is the operational network for ranking and canaries; non-Base options remain visible for transparency.

Probe evidence 1 recent
healthy 2026-08-13 06:00:02 UTC GET · HTTP 402 · 61ms · accepts 1 · base 1 ok
Request
GET https://mudko.com/api/x402/verify-counterparty
Robots
allow
Note
http_402;accepts=1;base=1
Accepts fingerprint
d8aa92da05511f680694d285f9da1f8a7379277b11953961a57dbcd319bdba16

Accepts snapshot

[
  {
    "amount": "250000",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "assetTransferMethod": null,
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "maxTimeoutSeconds": 120,
    "network": "eip155:8453",
    "payTo": "0x53598173ce7c26025bab0520d9e9d0c28fbcf7de",
    "paymentFlow": null,
    "raw": {
      "amount": "250000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "maxTimeoutSeconds": 120,
      "max_timeout_seconds": 120,
      "network": "eip155:8453",
      "payTo": "0x53598173ce7c26025bab0520d9e9d0c28fbcf7de",
      "pay_to": "0x53598173ce7c26025bab0520d9e9d0c28fbcf7de",
      "scheme": "exact"
    },
    "scheme": "exact"
  }
]

PaymentRequired raw 

{
  "accepts": [
    {
      "amount": "250000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "maxTimeoutSeconds": 120,
      "network": "eip155:8453",
      "payTo": "0x53598173ce7c26025bab0520d9e9d0c28fbcf7de",
      "scheme": "exact"
    }
  ],
  "error": "pass ?domain= (the domain to verify before transacting with it).",
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "domain": "example.com (string, required - domain to verify)"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "artifacts": {
              "agent_card": true,
              "commerce_declared": true,
              "dns_aid": true,
              "dnssec": true,
              "jwks": false,
              "mcp_live": true,
              "oasf_record": false
            },
            "domain": "example.com",
            "paid": true,
            "trust_score": 72,
            "verdict": "verifiable"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {
                  "domain": {
                    "description": "Domain to verify (required).",
                    "type": "string"
                  }
                },
                "required": [
                  "domain"
                ],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "artifacts": {
                    "type": "object"
                  },
                  "domain": {
                    "type": "string"
                  },
                  "trust_score": {
                    "type": "number"
                  },
                  "verdict": {
                    "type": "string"
                  }
                },
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "resource": {
    "description": "Counterparty trust verification for agents: before transacting with a domain, verify its trust artifacts — DNSSEC + DNS-AID records, agent-card, live MCP endpoint, published JWKS, OASF record, x402/commerce declarations. Returns a 0-100 trust score with per-artifact evidence. $0.25 per lookup.",
    "mimeType": "application/json",
    "serviceName": "Agent Trust Verify",
    "tags": [
      "trust",
      "verification",
      "counterparty",
      "agent-identity",
      "dnssec"
    ],
    "url": "https://mudko.com/api/x402/verify-counterparty"
  },
  "x402Version": 2
}

Response headers

{
  "access-control-allow-headers": "content-type, accept, x-agent-name",
  "access-control-allow-methods": "GET, POST, OPTIONS",
  "access-control-allow-origin": "*",
  "access-control-max-age": "86400",
  "age": "0",
  "cache-control": "public, max-age=0, must-revalidate",
  "content-security-policy": "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' data:; connect-src 'self' https:; frame-src https:; frame-ancestors 'none'; base-uri 'self'; form-action 'self' https:",
  "content-type": "application/json",
  "date": "Thu, 13 Aug 2026 06:00:02 GMT",
  "link": "</.well-known/api-catalog>; rel=\"api-catalog\", </.well-known/agent-card.json>; rel=\"service-desc\"; type=\"application/json\"",
  "payment-required": "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",
  "permissions-policy": "camera=(), microphone=(), geolocation=()",
  "referrer-policy": "strict-origin-when-cross-origin",
  "server": "Vercel",
  "strict-transport-security": "max-age=63072000",
  "transfer-encoding": "chunked",
  "x-content-type-options": "nosniff",
  "x-frame-options": "DENY",
  "x-matched-path": "/api/x402/verify-counterparty",
  "x-vercel-cache": "MISS",
  "x-vercel-id": "iad1::iad1::rxm7w-1786600802475-0fce29391adf"
}

Response body 

{
  "accepts": [
    {
      "amount": "250000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "maxTimeoutSeconds": 120,
      "network": "eip155:8453",
      "payTo": "0x53598173ce7c26025bab0520d9e9d0c28fbcf7de",
      "scheme": "exact"
    }
  ],
  "error": "pass ?domain= (the domain to verify before transacting with it).",
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "domain": "example.com (string, required - domain to verify)"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "artifacts": {
              "agent_card": true,
              "commerce_declared": true,
              "dns_aid": true,
              "dnssec": true,
              "jwks": false,
              "mcp_live": true,
              "oasf_record": false
            },
            "domain": "example.com",
            "paid": true,
            "trust_score": 72,
            "verdict": "verifiable"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {
                  "domain": {
                    "description": "Domain to verify (required).",
                    "type": "string"
                  }
                },
                "required": [
                  "domain"
                ],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "artifacts": {
                    "type": "object"
                  },
                  "domain": {
                    "type": "string"
                  },
                  "trust_score": {
                    "type": "number"
                  },
                  "verdict": {
                    "type": "string"
                  }
                },
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "resource": {
    "description": "Counterparty trust verification for agents: before transacting with a domain, verify its trust artifacts — DNSSEC + DNS-AID records, agent-card, live MCP endpoint, published JWKS, OASF record, x402/commerce declarations. Returns a 0-100 trust score with per-artifact evidence. $0.25 per lookup.",
    "mimeType": "application/json",
    "serviceName": "Agent Trust Verify",
    "tags": [
      "trust",
      "verification",
      "counterparty",
      "agent-identity",
      "dnssec"
    ],
    "url": "https://mudko.com/api/x402/verify-counterparty"
  },
  "x402Version": 2
}

Request headers

{
  "accept": "*/*",
  "user-agent": "Fetch402Bot/0.1 (+https://fetch402.com/crawler; contact: crawler@fetch402.com)"
}

Machine contract

Schemas.

InputJSON
{}
OutputJSON
{}