Preview a hook's rendered input

curl --request POST \
  --url https://api.vocobase.com/api/v2/agents/{agentId}/lifecycle-hooks/{hookId}/preview \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "variables": {
    "to_number": "+919876543210",
    "name": "Asha Menon"
  }
}
'

import requests

url = "https://api.vocobase.com/api/v2/agents/{agentId}/lifecycle-hooks/{hookId}/preview"

payload = { "variables": {
        "to_number": "+919876543210",
        "name": "Asha Menon"
    } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({variables: {to_number: '+919876543210', name: 'Asha Menon'}})
};

fetch('https://api.vocobase.com/api/v2/agents/{agentId}/lifecycle-hooks/{hookId}/preview', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.vocobase.com/api/v2/agents/{agentId}/lifecycle-hooks/{hookId}/preview",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'variables' => [
        'to_number' => '+919876543210',
        'name' => 'Asha Menon'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.vocobase.com/api/v2/agents/{agentId}/lifecycle-hooks/{hookId}/preview"

	payload := strings.NewReader("{\n  \"variables\": {\n    \"to_number\": \"+919876543210\",\n    \"name\": \"Asha Menon\"\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.vocobase.com/api/v2/agents/{agentId}/lifecycle-hooks/{hookId}/preview")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"variables\": {\n    \"to_number\": \"+919876543210\",\n    \"name\": \"Asha Menon\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.vocobase.com/api/v2/agents/{agentId}/lifecycle-hooks/{hookId}/preview")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"variables\": {\n    \"to_number\": \"+919876543210\",\n    \"name\": \"Asha Menon\"\n  }\n}"

response = http.request(request)
puts response.read_body

{
  "renderedInput": {
    "phone": "+919876543210"
  },
  "hook": {
    "id": "lh_2b3c4d5e-6f70-8192-a3b4-c5d6e7f80912",
    "agentId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "stage": "PRE_CALL",
    "position": 0,
    "toolSlug": "leadsquared",
    "toolFn": "lookup_lead",
    "functionId": null,
    "name": "Look up lead",
    "input": {
      "phone": "{{to_number}}"
    },
    "exposeAs": "lead",
    "required": false,
    "timeoutMs": 3000,
    "enabled": true,
    "createdAt": "2026-08-05T11:20:00.000Z",
    "updatedAt": "2026-08-05T11:20:00.000Z"
  }
}

{
  "success": false,
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Invalid or missing API key"
  }
}

{
  "error": "VALIDATION_FAILED",
  "issues": [
    {
      "field": "exposeAs",
      "code": "DUPLICATE",
      "message": "exposeAs 'lead' is already used in PRE_CALL"
    }
  ]
}

{
  "success": false,
  "error": {
    "code": "RATE_LIMITED",
    "message": "Rate limit exceeded. Retry after 60 seconds."
  }
}

{
  "success": false,
  "error": {
    "code": "INTERNAL_ERROR",
    "message": "An unexpected error occurred"
  }
}