{
  "openapi": "3.1.0",
  "info": {
    "title": "URL Signature Presigner",
    "summary": "Generate secure, signed URLs for controlled resource access.",
    "description": "Presign and verify URLs with HMAC-SHA256/SHA512: expiration, HTTP method, IP allowlists, headers, payload size. POST /sign and POST /verify.",
    "version": "1.0.0",
    "contact": {
      "name": "Precision Solutions Tech",
      "url": "https://precisionsolutionstech.com/apis/url-signature-presigner/"
    }
  },
  "externalDocs": {
    "description": "URL Signature Presigner documentation",
    "url": "https://precisionsolutionstech.com/apis/url-signature-presigner/"
  },
  "servers": [
    {
      "url": "https://url-signature-presigner-api.p.rapidapi.com"
    }
  ],
  "security": [
    {
      "rapidApiKey": []
    }
  ],
  "components": {
    "securitySchemes": {
      "rapidApiKey": {
        "type": "apiKey",
        "in": "header",
        "name": "x-rapidapi-key"
      }
    }
  },
  "paths": {
    "/sign": {
      "post": {
        "operationId": "urlSignaturePresigner",
        "summary": "Generate secure, signed URLs for controlled resource access.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "path": {
                    "type": "string"
                  },
                  "body": {
                    "type": "object",
                    "properties": {
                      "url": {
                        "type": "string"
                      },
                      "expiration": {
                        "type": "integer"
                      },
                      "secret": {
                        "type": "string"
                      },
                      "method": {
                        "type": "string"
                      },
                      "allowedIps": {
                        "type": "array",
                        "items": {
                          "type": "string"
                        }
                      },
                      "maxPayloadSize": {
                        "type": "integer"
                      }
                    }
                  },
                  "label": {
                    "type": "string"
                  }
                }
              },
              "example": {
                "path": "/sign",
                "body": {
                  "url": "https://example.com/files/report.pdf",
                  "expiration": 1893456000,
                  "secret": "your-secret-key",
                  "method": "GET",
                  "allowedIps": [
                    "192.168.1.100"
                  ],
                  "maxPayloadSize": 10485760
                },
                "label": "POST /sign — absolute expiration"
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Successful response",
            "content": {
              "application/json": {}
            }
          },
          "400": {
            "description": "Invalid request"
          },
          "429": {
            "description": "Rate limit exceeded"
          }
        }
      }
    }
  }
}