Telnyx

Authorizations

Authorization

string

header

required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Headers

telnyx-timestamp

integer<int64>

required

Unix timestamp (seconds since epoch) of when the webhook was sent - compatible with webhook-timestamp Unix timestamp for replay attack prevention

telnyx-signature-ed25519

string

required

Base64 encoded Ed25519 signature for webhook verification - compatible with webhook-signature Ed25519 signature of timestamp|payload for verification

Body

application/json

data

Call Conversation Ended · object

Show child attributes

data.record_type

enum<string>

Identifies the type of the resource.

Available options:

event

Example:

"event"

data.event_type

enum<string>

The type of event being delivered.

Available options:

call.conversation.ended

Example:

"call.conversation.ended"

data.id

string<uuid>

Unique identifier for the event.

Example:

"0ccc7b54-4df3-4bca-a65a-3da1ecc777f0"

data.occurred_at

string<date-time>

ISO 8601 datetime of when the event occurred.

Example:

"2018-02-02T22:25:27.521992Z"

data.created_at

string<date-time>

Timestamp when the event was created in the system.

Example:

"2025-05-29T13:35:38.927621Z"

data.payload

object

Show child attributes

data.payload.assistant_id

string

Unique identifier of the assistant involved in the call.

Example:

"assistant-d9082b56-ba2d-4ad1-a50c-58661eb1463d"

data.payload.call_control_id

string

Call ID used to issue commands via Call Control API.

Example:

"v3:MdI91X4lWFEs7IgbBEOT9M4AigoY08M0WWZFISt1Yw2axZ_IiE4pqg"

data.payload.connection_id

string

Call Control App ID (formerly Telnyx connection ID) used in the call.

Example:

"7267xxxxxxxxxxxxxx"

data.payload.call_leg_id

string

ID that is unique to the call leg.

Example:

"cc29cce6-3c91-11f0-a8e5-02420aef3d20"

data.payload.call_session_id

string

ID that is unique to the call session (group of related call legs).

Example:

"cc29c8d6-3c91-11f0-aa7c-02420aef3d20"

data.payload.client_state

string

Base64-encoded state received from a command.

Example:

"g3QAAAACbQAAAAtkYXRhX2NlbnRlcm0AAAADY2gxbQAAAApkZXBsb3ltZW50bQAAAARiYXNl"

data.payload.calling_party_type

enum<string>

The type of calling party connection.

Available options:

pstn,

sip

Example:

"sip"

data.payload.conversation_id

string

ID unique to the conversation or insight group generated for the call.

Example:

"0424805b-adc1-4ff8-9f95-e1de6883ecbe"

data.payload.duration_sec

integer

Duration of the conversation in seconds.

Example:

3

data.payload.from

string

The caller's number or identifier.

Example:

"+13124287921"

data.payload.to

string

The callee's number or SIP address.

Example:

"jamesw@assistant-d9082b56-ba2d-4ad1-a50c-58661eb1463d.sip.telnyx.com"

data.payload.llm_model

string

The large language model used during the conversation.

Example:

"openai/gpt-4o"

data.payload.stt_model

string

The speech-to-text model used in the conversation.

Example:

"distil-whisper/distil-large-v2"

data.payload.tts_provider

string

The text-to-speech provider used in the call.

Example:

"telnyx"

data.payload.tts_model_id

string

The model ID used for text-to-speech synthesis.

Example:

"Natural"

data.payload.tts_voice_id

string

Voice ID used for TTS.

Example:

"Marissa"

Example:

{
  "record_type": "event",
  "event_type": "call.conversation.ended",
  "id": "eb8775a6-634f-48b0-b177-d5465a8a8e9f",
  "occurred_at": "2025-05-29T13:35:38.817785Z",
  "created_at": "2025-05-29T13:35:38.927621Z",
  "payload": {
    "assistant_id": "assistant-d9082b56-ba2d-4ad1-a50c-58661eb1463d",
    "call_control_id": "v3:HDR1vQHx697hpP9xZ0bhlbUOWPFPDtPcxw-nuSMuC6mGVpb0euoklQ",
    "call_leg_id": "cc29cce6-3c91-11f0-a8e5-02420aef3d20",
    "call_session_id": "cc29c8d6-3c91-11f0-aa7c-02420aef3d20",
    "calling_party_type": "sip",
    "client_state": "g3QAAAACbQAAAAtkYXRhX2NlbnRlcm0AAAADY2gxbQAAAApkZXBsb3ltZW50bQAAAARiYXNl",
    "connection_id": "2694492062593582591",
    "conversation_id": "0424805b-adc1-4ff8-9f95-e1de6883ecbe",
    "duration_sec": 3,
    "from": "+13124287921",
    "to": "jamesw@assistant-d9082b56-ba2d-4ad1-a50c-58661eb1463d.sip.telnyx.com",
    "llm_model": "openai/gpt-4o",
    "stt_model": "distil-whisper/distil-large-v2",
    "tts_model_id": "Natural",
    "tts_provider": "telnyx",
    "tts_voice_id": "Marissa"
  }
}

Response

200

The server must return an HTTP 200, otherwise we will reattempt delivery at the failover webhook URL.

OAuth Discovery

IP Addresses

IP Ranges

SIM Cards

Addresses

Advanced Number Orders

Assistants

Audio

Chat

Clusters

Conversations

Embeddings

Fine Tuning

Integrations

MCP Servers

Audit Logs

Authentication Providers

Phone Number Search

Billing

Billing Groups

Brands

SIM Card Actions

Bundles

User Bundles

Call Control Applications

Debugging

Call Commands

Call Information

Campaign

Voice Channels

API Reference

Phone Number Orders

Conference Commands

Connections

Country Coverage

Credential Connections

Call Recordings

Customer Service Record

Detail Records

Dialogflow Integration

Documents

Dynamic Emergency Addresses

Dynamic Emergency Endpoints

Enum

External Connections

Programmable Fax Applications

Programmable Fax Commands

FQDN Connections

FQDNs

Global IPs

Inexplicit Number Orders

Integration Secrets

Inventory Level

IP Connections

IPs

Reports

MDR Detailed Reports

Speech to Text Batch Reports

CDR Reports

MDR Usage Reports

Telco Data Usage Reports

Speech to text Usage Reports

CDR Usage Reports

Managed Accounts

Media Storage API

Messages

RCS messaging

Messaging Hosted Number

Number Configurations

Advanced OptIn/OptOut

Messaging Profiles

Messaging Tollfree Verification

Messaging URL Domains

Mobile Network Operators

Push Credentials

Coverage

Networks

Notifications

Phone Number Block Orders

Number Lookup