{
  "openapi": "3.1.0",
  "info": {
    "title": "PDF Combiner API",
    "version": "1.0.0",
    "description": "API for merging multiple PDF files into a single PDF."
  },
  "servers": [
    {
      "url": "https://pdf.aptaya.com"
    }
  ],
  "paths": {
    "/api/health": {
      "get": {
        "summary": "Health check",
        "responses": {
          "200": {
            "description": "Service is healthy",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "status": { "type": "string" },
                    "service": { "type": "string" }
                  }
                }
              }
            }
          }
        }
      }
    },
    "/api/merge": {
      "post": {
        "summary": "Merge multiple PDF files",
        "requestBody": {
          "required": true,
          "content": {
            "multipart/form-data": {
              "schema": {
                "type": "object",
                "properties": {
                  "files": {
                    "type": "array",
                    "items": {
                      "type": "string",
                      "format": "binary"
                    }
                  }
                },
                "required": ["files"]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Merged PDF file",
            "content": {
              "application/pdf": {
                "schema": {
                  "type": "string",
                  "format": "binary"
                }
              }
            }
          },
          "400": {
            "description": "Bad request",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "error": { "type": "string" }
                  }
                }
              }
            }
          },
          "500": {
            "description": "Server error",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "error": { "type": "string" }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}