{
  "x402Version": 2,
  "id": 28413,
  "slug": "28413",
  "resource": "https://x402-seller-pmlm.onrender.com/check",
  "description": "x402 endpoint check: validate an x402 endpoint and audit its Bazaar listing before you pay for it or list it. One unpaid probe (never pays the target) grades the 402 challenge, schemas, examples, name, tags and latency, and adds Coinbase's validator verdict, the live Bazaar listing (30-day calls, payers, stale metadata) and search rank for its own name and tags. Returns score, grade and prioritized fixes. 0.005 USDC/call; failed calls are free.",
  "type": "http",
  "serviceName": "x402 Endpoint Checker",
  "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791275335/bazaar-icons/33b4c93fa74011e6.png",
  "resourceType": "Monitoring",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x079471E6F43b6feeF80895E19cBFcBB496904852",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "5000",
      "amountUsd": 0.005,
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:137",
      "payTo": "0x079471E6F43b6feeF80895E19cBFcBB496904852",
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "amount": "5000",
      "amountUsd": 0.005,
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:42161",
      "payTo": "0x079471E6F43b6feeF80895E19cBFcBB496904852",
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "amount": "5000",
      "amountUsd": 0.005,
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "payTo": "787RZwDGpjmRsG5wgnyBeWQHBuARax8Qo6P7dmDuqKeW",
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "amount": "5000",
      "amountUsd": 0.005,
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:43114",
      "payTo": "0x079471E6F43b6feeF80895E19cBFcBB496904852",
      "asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
      "amount": "5000",
      "maxTimeoutSeconds": 300
    },
    {
      "scheme": "exact",
      "network": "eip155:1329",
      "payTo": "0x079471E6F43b6feeF80895E19cBFcBB496904852",
      "asset": "0xe15fC38F6D8c56aF07bbCBe3BAf5708A2Bf42392",
      "amount": "5000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "properties": {
          "bazaarListing": {
            "description": "Live CDP Bazaar entry: listed, calls30d, uniquePayers30d, lastCalledAt, indexed name/tags, metadataStale",
            "type": "object"
          },
          "cdpValidator": {
            "description": "Coinbase /x402/validate verdict: valid, simulation, indexed, failed checks",
            "type": [
              "object",
              "null"
            ]
          },
          "checkedAt": {
            "type": "string"
          },
          "checks": {
            "items": {
              "properties": {
                "detail": {
                  "type": "string"
                },
                "fix": {
                  "type": "string"
                },
                "id": {
                  "type": "string"
                },
                "pass": {
                  "type": "boolean"
                },
                "severity": {
                  "enum": [
                    "required",
                    "ranking",
                    "advisory"
                  ],
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": "array"
          },
          "fixes": {
            "description": "Failed checks, required first, each with a concrete fix",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "grade": {
            "enum": [
              "A",
              "B",
              "C",
              "D",
              "F"
            ],
            "type": "string"
          },
          "indexable": {
            "type": "boolean"
          },
          "latencyMs": {
            "type": "integer"
          },
          "networks": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "passed": {
            "type": "integer"
          },
          "priceUsdIfUsdc": {
            "type": [
              "number",
              "null"
            ]
          },
          "score": {
            "maximum": 100,
            "minimum": 0,
            "type": "integer"
          },
          "searchRanks": {
            "description": "Bazaar search position for the endpoint's own serviceName and first tags",
            "items": {
              "properties": {
                "leader": {
                  "type": [
                    "object",
                    "null"
                  ]
                },
                "of": {
                  "type": "integer"
                },
                "query": {
                  "type": "string"
                },
                "rank": {
                  "type": [
                    "integer",
                    "null"
                  ]
                }
              },
              "type": "object"
            },
            "type": "array"
          },
          "serviceName": {
            "type": [
              "string",
              "null"
            ]
          },
          "target": {
            "type": "string"
          },
          "total": {
            "type": "integer"
          },
          "totalMs": {
            "type": "integer"
          }
        },
        "required": [
          "target",
          "score",
          "grade",
          "checks",
          "fixes"
        ],
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "url": "https://x402-seller-pmlm.onrender.com/report"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "bazaarListing": {
              "calls30d": 8,
              "indexedServiceName": "Research Brief with Citations",
              "indexedTags": [
                "research brief",
                "web research",
                "summarize a topic",
                "wikipedia summary",
                "answer with sources"
              ],
              "lastCalledAt": "2026-10-06T05:32:44.371Z",
              "lastUpdated": "2026-10-06T05:32:44.958Z",
              "listed": true,
              "metadataStale": [],
              "uniquePayers30d": 4
            },
            "cdpValidator": {
              "failedAdvisory": [],
              "failedRequired": [],
              "indexed": true,
              "lastCrawledAt": "2026-10-06T05:32:45.591Z",
              "simulation": "accepted",
              "valid": true
            },
            "checkedAt": "2026-10-06T07:03:04.512Z",
            "checks": [
              {
                "detail": "HTTP 402 (unpaid probe must return 402)",
                "id": "status_402",
                "pass": true,
                "severity": "required"
              },
              {
                "detail": "79 ms",
                "id": "latency_under_1500ms",
                "pass": true,
                "severity": "ranking"
              },
              {
                "detail": "Research Brief with Citations",
                "id": "service_name_set",
                "pass": true,
                "severity": "ranking"
              },
              {
                "detail": "5 tag(s): research brief, web research, summarize a topic, wikipedia summary, answer with sources",
                "id": "tags_set",
                "pass": true,
                "severity": "ranking"
              },
              {
                "detail": "extensions.bazaar present",
                "id": "bazaar_extension",
                "pass": true,
                "severity": "required"
              },
              {
                "detail": "17 top-level fields in the output example",
                "id": "output_example",
                "pass": true,
                "severity": "ranking"
              },
              {
                "detail": "required output fields present in example",
                "id": "example_matches_schema",
                "pass": true,
                "severity": "advisory"
              },
              {
                "detail": "Coinbase validator: valid=true, simulation=accepted",
                "id": "cdp_validator",
                "pass": true,
                "severity": "required"
              }
            ],
            "fixes": [],
            "grade": "A",
            "indexable": true,
            "latencyMs": 79,
            "method": "GET",
            "networks": [
              "eip155:8453",
              "eip155:137",
              "eip155:42161",
              "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
              "eip155:43114",
              "eip155:1329"
            ],
            "note": "One unpaid probe from this service plus Coinbase's own free validator probe; nothing is ever paid to the target. Bazaar rank = relevance (name, tags,…",
            "passed": 22,
            "priceUsdIfUsdc": 0.01,
            "score": 100,
            "searchRanks": [
              {
                "leader": {
                  "calls30d": 8,
                  "payers30d": 4,
                  "resource": "https://x402-seller-pmlm.onrender.com/report"
                },
                "of": 9,
                "query": "Research Brief with Citations",
                "rank": 1
              },
              {
                "leader": {
                  "calls30d": 8,
                  "payers30d": 4,
                  "resource": "https://x402-seller-pmlm.onrender.com/report"
                },
                "of": 9,
                "query": "research brief",
                "rank": 1
              },
              {
                "leader": {
                  "calls30d": 2,
                  "payers30d": 2,
                  "resource": "https://market.datapackvibe.com/x402/demand-next-web-research-methods-researchers"
                },
                "of": 11,
                "query": "web research",
                "rank": null
              }
            ],
            "serviceName": "Research Brief with Citations",
            "target": "https://x402-seller-pmlm.onrender.com/report",
            "total": 22,
            "totalMs": 1423
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {
                  "method": {
                    "description": "HTTP method to probe (default GET)",
                    "enum": [
                      "GET",
                      "POST"
                    ],
                    "type": "string"
                  },
                  "url": {
                    "description": "Public https URL of an x402-protected endpoint (yours or one you are about to pay)",
                    "type": "string"
                  }
                },
                "required": [
                  "url"
                ],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "bazaarListing": {
                    "description": "Live CDP Bazaar entry: listed, calls30d, uniquePayers30d, lastCalledAt, indexed name/tags, metadataStale",
                    "type": "object"
                  },
                  "cdpValidator": {
                    "description": "Coinbase /x402/validate verdict: valid, simulation, indexed, failed checks",
                    "type": [
                      "object",
                      "null"
                    ]
                  },
                  "checkedAt": {
                    "type": "string"
                  },
                  "checks": {
                    "items": {
                      "properties": {
                        "detail": {
                          "type": "string"
                        },
                        "fix": {
                          "type": "string"
                        },
                        "id": {
                          "type": "string"
                        },
                        "pass": {
                          "type": "boolean"
                        },
                        "severity": {
                          "enum": [
                            "required",
                            "ranking",
                            "advisory"
                          ],
                          "type": "string"
                        }
                      },
                      "type": "object"
                    },
                    "type": "array"
                  },
                  "fixes": {
                    "description": "Failed checks, required first, each with a concrete fix",
                    "items": {
                      "type": "string"
                    },
                    "type": "array"
                  },
                  "grade": {
                    "enum": [
                      "A",
                      "B",
                      "C",
                      "D",
                      "F"
                    ],
                    "type": "string"
                  },
                  "indexable": {
                    "type": "boolean"
                  },
                  "latencyMs": {
                    "type": "integer"
                  },
                  "networks": {
                    "items": {
                      "type": "string"
                    },
                    "type": "array"
                  },
                  "passed": {
                    "type": "integer"
                  },
                  "priceUsdIfUsdc": {
                    "type": [
                      "number",
                      "null"
                    ]
                  },
                  "score": {
                    "maximum": 100,
                    "minimum": 0,
                    "type": "integer"
                  },
                  "searchRanks": {
                    "description": "Bazaar search position for the endpoint's own serviceName and first tags",
                    "items": {
                      "properties": {
                        "leader": {
                          "type": [
                            "object",
                            "null"
                          ]
                        },
                        "of": {
                          "type": "integer"
                        },
                        "query": {
                          "type": "string"
                        },
                        "rank": {
                          "type": [
                            "integer",
                            "null"
                          ]
                        }
                      },
                      "type": "object"
                    },
                    "type": "array"
                  },
                  "serviceName": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "target": {
                    "type": "string"
                  },
                  "total": {
                    "type": "integer"
                  },
                  "totalMs": {
                    "type": "integer"
                  }
                },
                "required": [
                  "target",
                  "score",
                  "grade",
                  "checks",
                  "fixes"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    },
    "builder-code": {
      "info": {
        "a": "bc_rdtmtdd1"
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "additionalProperties": false,
        "properties": {
          "a": {
            "description": "App builder code",
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          },
          "s": {
            "description": "Service builder codes",
            "items": {
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "maxItems": 11,
            "type": "array"
          },
          "w": {
            "description": "Wallet builder code",
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          }
        },
        "type": "object"
      }
    },
    "eip2612GasSponsoring": {},
    "erc20ApprovalGasSponsoring": {}
  },
  "tags": [
    "x402 endpoint check",
    "validate x402 endpoint",
    "x402 bazaar ranking",
    "x402 listing audit",
    "api testing",
    "bazaar",
    "builder-code",
    "eip2612GasSponsoring",
    "erc20ApprovalGasSponsoring"
  ],
  "sourceHost": "x402-seller-pmlm.onrender.com",
  "lastUpdated": "2026-10-08T06:13:15.815Z",
  "quality": {
    "calls30d": 6,
    "uniquePayers30d": 3,
    "lastCalledAt": "2026-10-08T06:13:15.611Z"
  },
  "metadata": {
    "serviceName": "x402 Endpoint Checker",
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791275335/bazaar-icons/33b4c93fa74011e6.png",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "url": "https://x402-seller-pmlm.onrender.com/report"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "bazaarListing": {
                "calls30d": 8,
                "indexedServiceName": "Research Brief with Citations",
                "indexedTags": [
                  "research brief",
                  "web research",
                  "summarize a topic",
                  "wikipedia summary",
                  "answer with sources"
                ],
                "lastCalledAt": "2026-10-06T05:32:44.371Z",
                "lastUpdated": "2026-10-06T05:32:44.958Z",
                "listed": true,
                "metadataStale": [],
                "uniquePayers30d": 4
              },
              "cdpValidator": {
                "failedAdvisory": [],
                "failedRequired": [],
                "indexed": true,
                "lastCrawledAt": "2026-10-06T05:32:45.591Z",
                "simulation": "accepted",
                "valid": true
              },
              "checkedAt": "2026-10-06T07:03:04.512Z",
              "checks": [
                {
                  "detail": "HTTP 402 (unpaid probe must return 402)",
                  "id": "status_402",
                  "pass": true,
                  "severity": "required"
                },
                {
                  "detail": "79 ms",
                  "id": "latency_under_1500ms",
                  "pass": true,
                  "severity": "ranking"
                },
                {
                  "detail": "Research Brief with Citations",
                  "id": "service_name_set",
                  "pass": true,
                  "severity": "ranking"
                },
                {
                  "detail": "5 tag(s): research brief, web research, summarize a topic, wikipedia summary, answer with sources",
                  "id": "tags_set",
                  "pass": true,
                  "severity": "ranking"
                },
                {
                  "detail": "extensions.bazaar present",
                  "id": "bazaar_extension",
                  "pass": true,
                  "severity": "required"
                },
                {
                  "detail": "17 top-level fields in the output example",
                  "id": "output_example",
                  "pass": true,
                  "severity": "ranking"
                },
                {
                  "detail": "required output fields present in example",
                  "id": "example_matches_schema",
                  "pass": true,
                  "severity": "advisory"
                },
                {
                  "detail": "Coinbase validator: valid=true, simulation=accepted",
                  "id": "cdp_validator",
                  "pass": true,
                  "severity": "required"
                }
              ],
              "fixes": [],
              "grade": "A",
              "indexable": true,
              "latencyMs": 79,
              "method": "GET",
              "networks": [
                "eip155:8453",
                "eip155:137",
                "eip155:42161",
                "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
                "eip155:43114",
                "eip155:1329"
              ],
              "note": "One unpaid probe from this service plus Coinbase's own free validator probe; nothing is ever paid to the target. Bazaar rank = relevance (name, tags,…",
              "passed": 22,
              "priceUsdIfUsdc": 0.01,
              "score": 100,
              "searchRanks": [
                {
                  "leader": {
                    "calls30d": 8,
                    "payers30d": 4,
                    "resource": "https://x402-seller-pmlm.onrender.com/report"
                  },
                  "of": 9,
                  "query": "Research Brief with Citations",
                  "rank": 1
                },
                {
                  "leader": {
                    "calls30d": 8,
                    "payers30d": 4,
                    "resource": "https://x402-seller-pmlm.onrender.com/report"
                  },
                  "of": 9,
                  "query": "research brief",
                  "rank": 1
                },
                {
                  "leader": {
                    "calls30d": 2,
                    "payers30d": 2,
                    "resource": "https://market.datapackvibe.com/x402/demand-next-web-research-methods-researchers"
                  },
                  "of": 11,
                  "query": "web research",
                  "rank": null
                }
              ],
              "serviceName": "Research Brief with Citations",
              "target": "https://x402-seller-pmlm.onrender.com/report",
              "total": 22,
              "totalMs": 1423
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "method": {
                      "description": "HTTP method to probe (default GET)",
                      "enum": [
                        "GET",
                        "POST"
                      ],
                      "type": "string"
                    },
                    "url": {
                      "description": "Public https URL of an x402-protected endpoint (yours or one you are about to pay)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "url"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "bazaarListing": {
                      "description": "Live CDP Bazaar entry: listed, calls30d, uniquePayers30d, lastCalledAt, indexed name/tags, metadataStale",
                      "type": "object"
                    },
                    "cdpValidator": {
                      "description": "Coinbase /x402/validate verdict: valid, simulation, indexed, failed checks",
                      "type": [
                        "object",
                        "null"
                      ]
                    },
                    "checkedAt": {
                      "type": "string"
                    },
                    "checks": {
                      "items": {
                        "properties": {
                          "detail": {
                            "type": "string"
                          },
                          "fix": {
                            "type": "string"
                          },
                          "id": {
                            "type": "string"
                          },
                          "pass": {
                            "type": "boolean"
                          },
                          "severity": {
                            "enum": [
                              "required",
                              "ranking",
                              "advisory"
                            ],
                            "type": "string"
                          }
                        },
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "fixes": {
                      "description": "Failed checks, required first, each with a concrete fix",
                      "items": {
                        "type": "string"
                      },
                      "type": "array"
                    },
                    "grade": {
                      "enum": [
                        "A",
                        "B",
                        "C",
                        "D",
                        "F"
                      ],
                      "type": "string"
                    },
                    "indexable": {
                      "type": "boolean"
                    },
                    "latencyMs": {
                      "type": "integer"
                    },
                    "networks": {
                      "items": {
                        "type": "string"
                      },
                      "type": "array"
                    },
                    "passed": {
                      "type": "integer"
                    },
                    "priceUsdIfUsdc": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "score": {
                      "maximum": 100,
                      "minimum": 0,
                      "type": "integer"
                    },
                    "searchRanks": {
                      "description": "Bazaar search position for the endpoint's own serviceName and first tags",
                      "items": {
                        "properties": {
                          "leader": {
                            "type": [
                              "object",
                              "null"
                            ]
                          },
                          "of": {
                            "type": "integer"
                          },
                          "query": {
                            "type": "string"
                          },
                          "rank": {
                            "type": [
                              "integer",
                              "null"
                            ]
                          }
                        },
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "serviceName": {
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "target": {
                      "type": "string"
                    },
                    "total": {
                      "type": "integer"
                    },
                    "totalMs": {
                      "type": "integer"
                    }
                  },
                  "required": [
                    "target",
                    "score",
                    "grade",
                    "checks",
                    "fixes"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "builder-code": {
        "info": {
          "a": "bc_rdtmtdd1"
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "a": {
              "description": "App builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "s": {
              "description": "Service builder codes",
              "items": {
                "pattern": "^[a-z0-9_]{1,32}$",
                "type": "string"
              },
              "maxItems": 11,
              "type": "array"
            },
            "w": {
              "description": "Wallet builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            }
          },
          "type": "object"
        }
      },
      "eip2612GasSponsoring": {},
      "erc20ApprovalGasSponsoring": {}
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "x402-seller-pmlm.onrender.com",
    "manifest_name": "x402-seller-pmlm.onrender.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "example": {
      "bazaarListing": {},
      "cdpValidator": {},
      "checkedAt": "string",
      "checks": [
        {
          "detail": "string",
          "fix": "string",
          "id": "string",
          "pass": true,
          "severity": "required"
        }
      ],
      "fixes": [
        "string"
      ],
      "grade": "A",
      "indexable": true,
      "latencyMs": 0,
      "networks": [
        "string"
      ],
      "passed": 0,
      "priceUsdIfUsdc": 0,
      "score": 0,
      "searchRanks": [
        {
          "leader": {},
          "of": 0,
          "query": "string",
          "rank": 0
        }
      ],
      "serviceName": "string",
      "target": "string",
      "total": 0,
      "totalMs": 0
    },
    "type": "string"
  }
}