{
  "openapi": "3.1.0",
  "info": {
    "title": "Message.com iMessage API",
    "version": "1.0.0"
  },
  "servers": [
    {
      "url": "https://app.message.com/api/v1/integrations/imessage"
    }
  ],
  "security": [
    {
      "apiKey": []
    }
  ],
  "components": {
    "securitySchemes": {
      "apiKey": {
        "type": "http",
        "scheme": "bearer"
      }
    }
  },
  "paths": {
    "/lines": {
      "get": {
        "summary": "Read iMessage lines",
        "responses": {
          "200": {
            "description": "Success"
          },
          "401": {
            "description": "Authentication required"
          },
          "403": {
            "description": "Missing permission or access"
          },
          "429": {
            "description": "Rate limit"
          }
        }
      }
    },
    "/usage": {
      "get": {
        "summary": "Read iMessage usage",
        "responses": {
          "200": {
            "description": "Success"
          },
          "401": {
            "description": "Authentication required"
          },
          "403": {
            "description": "Missing permission or access"
          },
          "429": {
            "description": "Rate limit"
          }
        }
      }
    },
    "/messages": {
      "get": {
        "summary": "Read iMessage messages",
        "responses": {
          "200": {
            "description": "Success"
          },
          "401": {
            "description": "Authentication required"
          },
          "403": {
            "description": "Missing permission or access"
          },
          "429": {
            "description": "Rate limit"
          }
        },
        "parameters": [
          {
            "name": "lineId",
            "in": "query",
            "required": true,
            "schema": {
              "type": "string",
              "format": "uuid"
            }
          },
          {
            "name": "limit",
            "in": "query",
            "required": false,
            "schema": {
              "type": "integer",
              "minimum": 1,
              "maximum": 100,
              "default": 50
            }
          },
          {
            "name": "after",
            "in": "query",
            "required": false,
            "schema": {
              "type": "string",
              "format": "date-time"
            }
          },
          {
            "name": "afterId",
            "in": "query",
            "required": false,
            "schema": {
              "type": "string",
              "format": "uuid"
            }
          }
        ]
      }
    },
    "/send": {
      "post": {
        "summary": "Send an iMessage with durable request-id deduplication",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "additionalProperties": false,
                "required": [
                  "requestId",
                  "lineId",
                  "to",
                  "body"
                ],
                "properties": {
                  "requestId": {
                    "type": "string",
                    "format": "uuid"
                  },
                  "lineId": {
                    "type": "string",
                    "format": "uuid"
                  },
                  "to": {
                    "type": "string",
                    "pattern": "^\\+[1-9]\\d{6,14}$"
                  },
                  "body": {
                    "type": "string",
                    "minLength": 1,
                    "maxLength": 10000
                  }
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Accepted; inspect delivery status separately"
          },
          "400": {
            "description": "Invalid fields"
          },
          "403": {
            "description": "Permission, opt-out or package refusal"
          },
          "409": {
            "description": "Request conflict or outcome uncertain; never resend with a new ID"
          },
          "429": {
            "description": "Sending or API limit"
          },
          "503": {
            "description": "Outcome uncertain or unavailable"
          }
        }
      }
    }
  }
}