curl --request POST \
  --url https://realtime-api.voiceflow.com/v1/stable/tool \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "target": {
    "global": true,
    "playbookID": "<string>"
  },
  "type": "api",
  "apiToolID": "<string>",
  "description": "<string>",
  "messages": {
    "delayMessageID": "<string>",
    "failureMessageID": "<string>",
    "executionMessageID": "<string>",
    "completionMessageID": "<string>",
    "delayMessageSeconds": 123,
    "generative": {}
  },
  "captureInputVariables": {},
  "asyncExecution": false,
  "inputVariables": {},
  "captureResponse": {}
}
'

{
  "tool": {
    "id": "<string>",
    "createdAt": "2023-11-07T05:31:56Z",
    "updatedAt": "2023-11-07T05:31:56Z",
    "messages": {
      "delayMessageID": "<string>",
      "failureMessageID": "<string>",
      "executionMessageID": "<string>",
      "completionMessageID": "<string>",
      "delayMessageSeconds": 123,
      "generative": {
        "execution": {
          "enabled": true,
          "examples": [
            [
              "<string>"
            ]
          ]
        },
        "failure": {
          "enabled": true,
          "examples": [
            [
              "<string>"
            ]
          ]
        },
        "delay": {
          "enabled": true,
          "examples": [
            [
              "<string>"
            ]
          ]
        },
        "completion": {
          "enabled": true,
          "examples": [
            [
              "<string>"
            ]
          ]
        }
      }
    },
    "description": "<string>",
    "captureInputVariables": {},
    "type": "api",
    "apiToolID": "<string>",
    "asyncExecution": true,
    "inputVariables": {},
    "captureResponse": {}
  }
}