{
  "responses": {
    "200": {
      "content": {
        "image/*": { "schema": { "format": "binary", "type": "string" } }
      },
      "description": "Chart thumbnail image"
    },
    "302": { "description": "Redirects to the current digest" },
    "400": {
      "content": {
        "application/json": {
          "schema": {
            "properties": { "message": { "type": "string" } },
            "type": "object"
          },
          "example": { "message": "Bad request: Invalid parameters provided" }
        }
      },
      "description": "Bad request"
    },
    "401": {
      "content": {
        "application/json": {
          "schema": {
            "properties": { "message": { "type": "string" } },
            "type": "object"
          },
          "example": { "message": "Unauthorized: Authentication required" }
        }
      },
      "description": "Unauthorized"
    },
    "404": {
      "content": {
        "application/json": {
          "schema": {
            "properties": { "message": { "type": "string" } },
            "type": "object"
          },
          "example": {
            "message": "Not found: The requested resource does not exist"
          }
        }
      },
      "description": "Not found"
    },
    "500": {
      "content": {
        "application/json": {
          "schema": {
            "properties": { "message": { "type": "string" } },
            "type": "object"
          },
          "example": {
            "message": "Internal server error: An unexpected error occurred"
          }
        }
      },
      "description": "Fatal error"
    }
  }
}