{
  "openapi": "3.1.0",
  "info": {
    "title": "Merit402 x402 Payment Safety Tools",
    "version": "3.0.4",
    "description": "Low-cost x402 safety tools designed for machine buyers before payment and before retrying failed payments."
  },
  "servers": [
    {
      "url": "https://merit402.vercel.app"
    }
  ],
  "paths": {
    "/": {
      "get": {
        "operationId": "auditX402EndpointBeforePaying",
        "summary": "Audit one public HTTPS x402 endpoint before paying it",
        "parameters": [
          {
            "name": "url",
            "in": "query",
            "required": true,
            "schema": {
              "type": "string",
              "format": "uri"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Paid buyer-safety report"
          },
          "402": {
            "description": "Payment Required"
          }
        }
      }
    },
    "/retry-safety": {
      "get": {
        "operationId": "x402RetryDoubleChargeSafetyCheck",
        "summary": "X402 retry safety check before paying again after a failed call",
        "parameters": [
          {
            "name": "settlement_status",
            "in": "query",
            "required": true,
            "schema": {
              "type": "string",
              "enum": [
                "settled",
                "not_settled",
                "unknown"
              ]
            }
          },
          {
            "name": "delivery_received",
            "in": "query",
            "required": true,
            "schema": {
              "type": "string",
              "enum": [
                "true",
                "false"
              ]
            }
          },
          {
            "name": "idempotency_key_present",
            "in": "query",
            "required": true,
            "schema": {
              "type": "string",
              "enum": [
                "true",
                "false"
              ]
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Paid retry/double-charge safety decision"
          },
          "402": {
            "description": "Payment Required"
          }
        }
      }
    }
  }
}