Post-Call Webhook

{
  "id": 12345,
  "type": "outbound",
  "assistant_id": "9c1f8e2a-4d3b-4a17-9f6e-2b5c8d0a7e31",
  "assistant_name": "Sales Agent",
  "customer_phone": "+1234567890",
  "assistant_phone": "+1987654321",
  "duration": 125,
  "status": "completed",
  "ended_by": "customer",
  "extracted_variables": {
    "status": true,
    "summary": "Customer interested in product demo",
    "lead_quality": "high",
    "next_action": "schedule_demo",
    "objections": ["price", "timing"],
    "delivery_address": {
      "street": "12 Main Street",
      "city": "Austin",
      "postcode": "73301"
    }
  },
  "input_variables": {
    "customer_name": "John Doe",
    "product_interest": "Pro Plan"
  },
  "transcript": [
    {
      "text": "Hello! This is Sarah from Autocalls. How are you today?",
      "type": "transcript",
      "sender": "bot",
      "timestamp": 1756812511.315143
    },
    {
      "text": "Hi, I'm doing well, thanks for calling.",
      "type": "transcript",
      "sender": "human",
      "timestamp": 1756812514.104436
    },
    {
      "text": "I'm calling to tell you about our new product features.",
      "type": "transcript",
      "sender": "bot",
      "timestamp": 1756812522.918859
    },
    {
      "text": "That sounds interesting, tell me more.",
      "type": "transcript",
      "sender": "human",
      "timestamp": 1756812525.234567
    }
  ],
  "formatted_transcript": "AI: Hello! This is Sarah from Autocalls. How are you today?\nCustomer: Hi, I'm doing well, thanks for calling.\nAI: I'm calling to tell you about our new product features.\nCustomer: That sounds interesting, tell me more.",
  "recording_url": "https://app.autocalls.ai/storage/recordings/call-12345.mp4",
  "created_at": "2025-01-15T10:30:00.000000Z",
  "finished_at": "2025-01-15T10:32:05.000000Z",
  "transfers": [
    {
      "id": 12346,
      "status": "completed",
      "transfer_to": "+1555123456",
      "duration": 85,
      "carrier_cost": 0.0156,
      "transcript": null,
      "formatted_transcript": "",
      "created_at": "2025-01-15T10:31:00.000000Z",
      "finished_at": "2025-01-15T10:32:25.000000Z"
    }
  ],
  "lead": {
    "id": 789,
    "phone_number": "+1234567890",
    "variables": {
      "source": "website",
      "interest_level": "high"
    },
    "status": "contacted",
    "call_tries": 2,
    "created_at": "2025-01-15T09:00:00.000000Z",
    "updated_at": "2025-01-15T10:32:05.000000Z",
    "campaign": {
      "id": 456,
      "name": "Product Demo Campaign",
      "status": "active",
      "allowed_hours_start_time": "09:00",
      "allowed_hours_end_time": "17:00",
      "allowed_days": ["monday", "tuesday", "wednesday", "thursday", "friday"],
      "max_calls_in_parallel": 5,
      "max_retries": 3,
      "retry_interval": 60,
      "created_at": "2025-01-15T08:00:00.000000Z",
      "updated_at": "2025-01-15T08:00:00.000000Z"
    }
  }
}

{
  "id": 12345,
  "type": "outbound",
  "assistant_id": "9c1f8e2a-4d3b-4a17-9f6e-2b5c8d0a7e31",
  "assistant_name": "Sales Agent",
  "customer_phone": "+1234567890",
  "assistant_phone": "+1987654321",
  "duration": 125,
  "status": "completed",
  "ended_by": "customer",
  "extracted_variables": {
    "status": true,
    "summary": "Customer interested in product demo",
    "lead_quality": "high",
    "next_action": "schedule_demo",
    "objections": ["price", "timing"],
    "delivery_address": {
      "street": "12 Main Street",
      "city": "Austin",
      "postcode": "73301"
    }
  },
  "input_variables": {
    "customer_name": "John Doe",
    "product_interest": "Pro Plan"
  },
  "transcript": [
    {
      "text": "Hello! This is Sarah from Autocalls. How are you today?",
      "type": "transcript",
      "sender": "bot",
      "timestamp": 1756812511.315143
    },
    {
      "text": "Hi, I'm doing well, thanks for calling.",
      "type": "transcript",
      "sender": "human",
      "timestamp": 1756812514.104436
    },
    {
      "text": "I'm calling to tell you about our new product features.",
      "type": "transcript",
      "sender": "bot",
      "timestamp": 1756812522.918859
    },
    {
      "text": "That sounds interesting, tell me more.",
      "type": "transcript",
      "sender": "human",
      "timestamp": 1756812525.234567
    }
  ],
  "formatted_transcript": "AI: Hello! This is Sarah from Autocalls. How are you today?\nCustomer: Hi, I'm doing well, thanks for calling.\nAI: I'm calling to tell you about our new product features.\nCustomer: That sounds interesting, tell me more.",
  "recording_url": "https://app.autocalls.ai/storage/recordings/call-12345.mp4",
  "created_at": "2025-01-15T10:30:00.000000Z",
  "finished_at": "2025-01-15T10:32:05.000000Z",
  "transfers": [
    {
      "id": 12346,
      "status": "completed",
      "transfer_to": "+1555123456",
      "duration": 85,
      "carrier_cost": 0.0156,
      "transcript": null,
      "formatted_transcript": "",
      "created_at": "2025-01-15T10:31:00.000000Z",
      "finished_at": "2025-01-15T10:32:25.000000Z"
    }
  ],
  "lead": {
    "id": 789,
    "phone_number": "+1234567890",
    "variables": {
      "source": "website",
      "interest_level": "high"
    },
    "status": "contacted",
    "call_tries": 2,
    "created_at": "2025-01-15T09:00:00.000000Z",
    "updated_at": "2025-01-15T10:32:05.000000Z",
    "campaign": {
      "id": 456,
      "name": "Product Demo Campaign",
      "status": "active",
      "allowed_hours_start_time": "09:00",
      "allowed_hours_end_time": "17:00",
      "allowed_days": ["monday", "tuesday", "wednesday", "thursday", "friday"],
      "max_calls_in_parallel": 5,
      "max_retries": 3,
      "retry_interval": 60,
      "created_at": "2025-01-15T08:00:00.000000Z",
      "updated_at": "2025-01-15T08:00:00.000000Z"
    }
  }
}

The Post-Call Webhook is automatically sent to your specified webhook URL after each call is completed. This webhook contains call details, extracted variables, transcript, and optionally the recording URL.

Webhook Configuration

To enable post-call webhooks:

Configure your assistant’s webhook URL in the assistant settings
Enable “Post call webhook” in the assistant configuration
Define post-call variables that the AI should extract

Request Format

The webhook is sent as a POST request to your configured URL with the following JSON payload:

Using one webhook URL for several assistants? Every payload carries assistant_id (UUID), assistant_name, and type, so you can route each call without configuring a separate endpoint per assistant.

Payload Structure

integer

Unique identifier of the call

string

Channel and direction of the call. One of inbound, outbound, web (browser widget voice call), whatsapp_inbound, or whatsapp_outbound

string

Unique identifier (UUID) of the assistant that handled the call

string

Name of the assistant that handled the call, as shown in the dashboard

string

Phone number of the customer in E.164 format (e.g., “+1234567890”) or null if not available

string

Phone number used by the assistant in E.164 format or null if not available

integer

Duration of the call in seconds

string

Final status of the call (e.g., “completed”, “busy”, “failed”)

string

Who hung up: customer (the caller), assistant (hang-up tool or voicemail), or system (max duration, silence, or a provider error). null on older calls

object

Variables extracted by AI based on your post-call schema configuration. String, number, and true/false stay scalars. Tags with multiple values, objects, lists, and JSON arrive as arrays or objects

Show Example extracted variables

boolean

Whether the call objective was achieved

string

Call summary in a few words

string|number|boolean|array|object

Any custom variables you defined in the assistant configuration. Tags with multiple values, objects, lists, and JSON arrive as arrays or objects

Extracted Variable Types

Each variable in your assistant’s post-call schema has a type, and the type decides what arrives in extracted_variables.

Type	What arrives
Text	A string
Number	A number
True/False	`true` or `false`
Tags	The chosen value as a string, or an array of strings when the variable allows several
Object	An object with the fields you defined, always the same keys
List	An array of objects, one per item the assistant found, empty when there are none
JSON	Free-form JSON, shaped by the assistant

A variable the assistant could not fill arrives as null.

Structured variables in extracted_variables

{
  "extracted_variables": {
    "call_outcome": "interested",
    "objections": ["price", "timing"],
    "delivery_address": {
      "street": "12 Main Street",
      "city": "Austin",
      "postcode": "73301"
    },
    "order_items": [
      { "product": "Pro Plan", "quantity": 2 },
      { "product": "Onboarding", "quantity": 1 }
    ],
    "raw_notes": { "preferred_contact": "email", "follow_up_in_days": 3 },
    "budget": null
  }
}

Point your integration at the type rather than at the value. A Tags variable that allows several values sends an array even when the assistant picks only one.

object

Variables that were passed to the assistant before the call started

array

Full transcript of the call, ordered oldest to newest. Note that this is a different shape from the conversation ended webhook, which uses role and content

Show Transcript entry properties

string

What the entry represents: transcript for something that was said, function for a mid-call tool call or its result, event for a call event. Skip entries that are not transcript when rendering a conversation

string

What was said. Present on transcript entries

string

Who said it: bot for the assistant, human for the customer

number

Unix timestamp (seconds, with decimals) of the entry

object

Latency and model details for that turn (for example tts_node_ttfb, e2e_latency, llm_metadata.model_name). Keys vary per turn and provider, so treat every one as optional

string

The same conversation as a ready-to-read string, with AI: and Customer: prefixes and one turn per line. Use this when you just need readable text and do not want to iterate the array

string

URL to download the call recording (only included if “Include recording in webhook” is enabled in assistant settings)

string

ISO 8601 timestamp when the call was initiated

string

ISO 8601 timestamp when the call was completed (uses updated_at from the call record)

object

Lead information (only included for campaign calls)

Show Lead properties

integer

Unique identifier of the lead

string

Lead’s phone number

object

Variables associated with the lead

string

Current status of the lead

integer

The number of call attempts made to this lead

string

When the lead was created

string

When the lead was last updated

object

Campaign information (if available)

Show Campaign properties

integer

Campaign ID

string

Campaign name

string

Campaign status

string

Campaign allowed start time

string

Campaign allowed end time

array

Campaign allowed days

integer

Maximum concurrent calls for campaign

integer

Maximum retry attempts for leads

integer

Retry interval in minutes

string

When the campaign was created

string

When the campaign was last updated

array

List of transfer calls made during this call (only included if the call has transfers)

Show Transfer properties

integer

Unique identifier of the transfer call

string

Final status of the transfer call (e.g., “completed”, “busy”, “failed”)

string

Phone number the call was transferred to in E.164 format

integer

Duration of the transfer call in seconds

number

Carrier cost of the transfer call in USD

array

Raw transcript of the transfer call (null if not available)

string

Human-readable formatted transcript of the transfer call

string

URL to download the transfer call recording (only included if “Include recording in webhook” is enabled and a recording exists)

string

ISO 8601 timestamp when the transfer was initiated

string

ISO 8601 timestamp when the transfer was completed

{
  "id": 12345,
  "type": "outbound",
  "assistant_id": "9c1f8e2a-4d3b-4a17-9f6e-2b5c8d0a7e31",
  "assistant_name": "Sales Agent",
  "customer_phone": "+1234567890",
  "assistant_phone": "+1987654321",
  "duration": 125,
  "status": "completed",
  "ended_by": "customer",
  "extracted_variables": {
    "status": true,
    "summary": "Customer interested in product demo",
    "lead_quality": "high",
    "next_action": "schedule_demo",
    "objections": ["price", "timing"],
    "delivery_address": {
      "street": "12 Main Street",
      "city": "Austin",
      "postcode": "73301"
    }
  },
  "input_variables": {
    "customer_name": "John Doe",
    "product_interest": "Pro Plan"
  },
  "transcript": [
    {
      "text": "Hello! This is Sarah from Autocalls. How are you today?",
      "type": "transcript",
      "sender": "bot",
      "timestamp": 1756812511.315143
    },
    {
      "text": "Hi, I'm doing well, thanks for calling.",
      "type": "transcript",
      "sender": "human",
      "timestamp": 1756812514.104436
    },
    {
      "text": "I'm calling to tell you about our new product features.",
      "type": "transcript",
      "sender": "bot",
      "timestamp": 1756812522.918859
    },
    {
      "text": "That sounds interesting, tell me more.",
      "type": "transcript",
      "sender": "human",
      "timestamp": 1756812525.234567
    }
  ],
  "formatted_transcript": "AI: Hello! This is Sarah from Autocalls. How are you today?\nCustomer: Hi, I'm doing well, thanks for calling.\nAI: I'm calling to tell you about our new product features.\nCustomer: That sounds interesting, tell me more.",
  "recording_url": "https://app.autocalls.ai/storage/recordings/call-12345.mp4",
  "created_at": "2025-01-15T10:30:00.000000Z",
  "finished_at": "2025-01-15T10:32:05.000000Z",
  "transfers": [
    {
      "id": 12346,
      "status": "completed",
      "transfer_to": "+1555123456",
      "duration": 85,
      "carrier_cost": 0.0156,
      "transcript": null,
      "formatted_transcript": "",
      "created_at": "2025-01-15T10:31:00.000000Z",
      "finished_at": "2025-01-15T10:32:25.000000Z"
    }
  ],
  "lead": {
    "id": 789,
    "phone_number": "+1234567890",
    "variables": {
      "source": "website",
      "interest_level": "high"
    },
    "status": "contacted",
    "call_tries": 2,
    "created_at": "2025-01-15T09:00:00.000000Z",
    "updated_at": "2025-01-15T10:32:05.000000Z",
    "campaign": {
      "id": 456,
      "name": "Product Demo Campaign",
      "status": "active",
      "allowed_hours_start_time": "09:00",
      "allowed_hours_end_time": "17:00",
      "allowed_days": ["monday", "tuesday", "wednesday", "thursday", "friday"],
      "max_calls_in_parallel": 5,
      "max_retries": 3,
      "retry_interval": 60,
      "created_at": "2025-01-15T08:00:00.000000Z",
      "updated_at": "2025-01-15T08:00:00.000000Z"
    }
  }
}

Webhook Settings

You can configure the following options for your post-call webhook:

Send webhook only on completed: Only send the webhook for successfully completed calls
Include recording in webhook: Include the recording_url field in the payload
Custom variables: Define custom variables that the AI should extract from the conversation

Delivery and retries

The webhook is a POST with a JSON body. Reply with any 2xx status within 20 seconds; the response body is ignored. Do your processing after you have replied, or hand it to a background task, so a slow handler never turns into a timeout. If the delivery fails with a temporary error, it is retried automatically with a growing delay:

Attempt	When
1	Right after the call ends (or when you ask for a resend)
2	30 seconds after attempt 1 failed
3	60 seconds after attempt 2 failed
4	2 minutes after attempt 3 failed
5	5 minutes after attempt 4 failed

The last attempt is made about 8.5 minutes after the first one. Retried: any 5xx (for example 502 Bad Gateway or 503 Service Unavailable), 408, 429, connection failures and timeouts (no response within 20 seconds). Any other 4xx (for example 400, 401, 403, 404) is treated as a problem with the endpoint or the payload and is not retried. After the last failed attempt the delivery is marked as failed. The call page in your dashboard always shows the HTTP status and body of the latest attempt, and the same information is returned as webhook_response by Get call.

Resending webhooks

You can send the webhook of a call again at any time:

From the call page: Re-send webhook in the post-call webhook section sends the call’s data again.
From the calls list: Resend Webhooks evaluates the selected calls again and re-sends their webhooks, up to 500 calls at a time.
From the API: Resend call webhooks sends the data of one or more calls again, up to 500 per request.
From the AI connector: ask your assistant to resend the webhook of a call.

A resend goes to the webhook URL currently configured on the assistant.

Handle duplicates

The same call can reach your endpoint more than once: a retry can arrive after a slow attempt that your endpoint did process, and a resend can overlap with an automatic retry. Treat the webhook as at-least-once and de-duplicate on id, the unique identifier of the call: process the first payload for an id and ignore, or idempotently update on, later ones.

Important Notes

The type field tells you both the channel and the direction of the call. Text conversations (web widget chat, WhatsApp messages) never arrive here — they use the conversation ended webhook instead. Completed WhatsApp voice calls do arrive here, as whatsapp_inbound or whatsapp_outbound
The assistant_id is the assistant’s UUID, the same identifier used by the other webhooks and by the API — not the numeric id shown in the dashboard URL
The customer_phone and assistant_phone fields can be null if the information is not available
The recording_url field is only included if you have enabled “Include recording in webhook” in your assistant settings
The lead object is only included for calls that are part of a campaign
The transfers array is only included for calls that have transfer calls associated with them
The extracted_variables object will contain the variables you defined in your assistant’s post-call schema configuration. New types (tags with multiple values, object, list, json) are arrays or objects, not strings
The ended_by field is customer, assistant, or system when the engine reported who hung up
Deliveries are retried on temporary errors and can be resent, so the same id can arrive more than once. See Delivery and retries

API Reference

Assistants

Folders

Labels

Calls

Conversations

AI

Realtime

Mid Call Tools

Leads

Campaigns

Automations

Phone Numbers

SIP Trunks

Knowledgebases

SMS

WhatsApp

Webhooks

API Keys

White Label

Webhook Configuration

Request Format

Payload Structure

Extracted Variable Types

Webhook Settings

Delivery and retries

Resending webhooks

Handle duplicates

Important Notes

​Webhook Configuration

​Request Format

​Payload Structure

​Extracted Variable Types

​Webhook Settings

​Delivery and retries

​Resending webhooks

​Handle duplicates

​Important Notes

Webhook Configuration

Request Format

Payload Structure

Extracted Variable Types

Webhook Settings

Delivery and retries

Resending webhooks

Handle duplicates

Important Notes