> ## Documentation Index
> Fetch the complete documentation index at: https://docs.grassfish.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Get FAST response message

## OpenAPI

````json GET /v{version}/Fast/player/{playerId}/{messageId}
{
  "openapi": "3.0.1",
  "info": {
    "title": "IXM Platform API 1.21",
    "description": "IXM Platform API",
    "contact": {
      "name": "Grassfish",
      "url": "https://grassfish.com",
      "email": "support@grassfish.com"
    },
    "version": "1.21"
  },
  "paths": {
    "/v{version}/Fast/player/{playerId}/{messageId}": {
      "get": {
        "tags": [
          "Fast"
        ],
        "summary": "Get FAST response message",
        "operationId": "Fast_GetResponseMessage",
        "parameters": [
          {
            "name": "messageId",
            "in": "path",
            "description": "Unique ID of the message",
            "required": true,
            "schema": {
              "type": "string",
              "format": "uuid"
            }
          },
          {
            "name": "playerId",
            "in": "path",
            "description": "Unique ID of the player",
            "required": true,
            "schema": {
              "type": "integer",
              "format": "int32"
            }
          },
          {
            "name": "version",
            "in": "path",
            "description": "The requested API version",
            "required": true,
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "OK",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/V1.Models.Fast.FastResponseMessage"
                }
              }
            }
          },
          "400": {
            "description": "Bad request",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Common.Models.ModelStateError"
                }
              }
            }
          },
          "401": {
            "description": "Unauthorized",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Common.Models.Error"
                }
              }
            }
          },
          "403": {
            "description": "Access denied",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Common.Models.Error"
                }
              }
            }
          },
          "404": {
            "description": "Message not found",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Common.Models.Error"
                }
              }
            }
          },
          "500": {
            "description": "Unexpected error",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Common.Models.Error"
                }
              }
            }
          }
        },
        "security": [
          {
            "api_key": []
          },
          {
            "session_id": []
          }
        ]
      }
    }
  },
  "components": {
    "schemas": {
      "V1.Models.Fast.FastResponseMessage": {
        "type": "object",
        "properties": {
          "BinaryPayload": {
            "type": "string",
            "description": "Binary content of the message payload",
            "format": "byte"
          },
          "CommittedUtc": {
            "type": "string",
            "description": "Committed time of the message in UTC",
            "format": "date-time"
          },
          "PlayerId": {
            "type": "integer",
            "description": "Unique ID of the player",
            "format": "int32"
          },
          "Processed": {
            "type": "boolean",
            "description": "If `true`, the message is processed.\r\nDefault: `false`."
          },
          "SentUtc": {
            "type": "string",
            "description": "Sent time of the message in UTC",
            "format": "date-time"
          },
          "State": {
            "type": "integer",
            "description": "State of the message",
            "format": "int32"
          },
          "StatusMessage": {
            "type": "string",
            "description": "Status message of the message"
          },
          "TextPayload": {
            "type": "string",
            "description": "Content of the message payload as plain text"
          }
        },
        "description": "FAST response message"
      },
      "Common.Models.ModelStateError": {
        "type": "object",
        "properties": {
          "ValidationErrors": {
            "type": "object",
            "additionalProperties": {
              "type": "array",
              "items": {
                "type": "string"
              }
            }
          }
        }
      },
      "Common.Models.Error": {
        "type": "object",
        "properties": {
          "Id": {
            "type": "string"
          },
          "Message": {
            "type": "string"
          },
          "Type": {
            "type": "string"
          },
          "Values": {
            "type": "object",
            "additionalProperties": {
              "type": "object"
            }
          }
        }
      }
    },
    "securitySchemes": {
      "api_key": {
        "type": "apiKey",
        "description": "Api Key",
        "name": "X-ApiKey",
        "in": "header"
      },
      "session_id": {
        "type": "apiKey",
        "description": "Session Id",
        "name": "X-Session-Id",
        "in": "header"
      }
    }
  }
}
````