Ai telnyx-voice-gather-curl

install

source · Clone the upstream repo

git clone https://github.com/team-telnyx/ai

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/team-telnyx/ai "$T" && mkdir -p ~/.claude/skills && cp -r "$T/providers/cursor/plugin/skills/telnyx-voice-gather-curl" ~/.claude/skills/team-telnyx-ai-telnyx-voice-gather-curl-9e047f && rm -rf "$T"

manifest: providers/cursor/plugin/skills/telnyx-voice-gather-curl/SKILL.md

source content

Telnyx Voice Gather - curl

Installation

# curl is pre-installed on macOS, Linux, and Windows 10+

Setup

export TELNYX_API_KEY="YOUR_API_KEY_HERE"

All examples below use

$TELNYX_API_KEY

for authentication.

Error Handling

All API calls can fail with network errors, rate limits (429), validation errors (422), or authentication errors (401). Always handle errors in production code:

# Check HTTP status code in response
response=$(curl -s -w "\n%{http_code}" \
  -X POST "https://api.telnyx.com/v2/messages" \
  -H "Authorization: Bearer $TELNYX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"to": "+13125550001", "from": "+13125550002", "text": "Hello"}')

http_code=$(echo "$response" | tail -1)
body=$(echo "$response" | sed '$d')

case $http_code in
  2*) echo "Success: $body" ;;
  422) echo "Validation error — check required fields and formats" ;;
  429) echo "Rate limited — retry after delay"; sleep 1 ;;
  401) echo "Authentication failed — check TELNYX_API_KEY" ;;
  *)   echo "Error $http_code: $body" ;;
esac

Common error codes:

invalid API key,

insufficient permissions,

resource not found,

validation error (check field formats),

rate limited (retry with exponential backoff).

Add messages to AI Assistant

Add messages to the conversation started by an AI assistant on the call.

POST /calls/{call_control_id}/actions/ai_assistant_add_messages

Optional:

client_state

(string),

command_id

(string),

messages

(array[object])

curl \
  -X POST \
  -H "Authorization: Bearer $TELNYX_API_KEY" \
  -H "Content-Type: application/json" \
  "https://api.telnyx.com/v2/calls/v3:550e8400-e29b-41d4-a716-446655440000_gRU1OGRkYQ/actions/ai_assistant_add_messages"

Returns:

result

(string)

Start AI Assistant

Start an AI assistant on the call. Expected Webhooks:

```
call.conversation.ended
```
```
call.conversation_insights.generated
```

POST /calls/{call_control_id}/actions/ai_assistant_start

Optional:

assistant

(object),

client_state

(string),

command_id

(string),

greeting

(string),

interruption_settings

(object),

message_history

(array[object]),

participants

(array[object]),

send_message_history_updates

(boolean),

transcription

(object),

voice

(string),

voice_settings

(object)

curl \
  -X POST \
  -H "Authorization: Bearer $TELNYX_API_KEY" \
  -H "Content-Type: application/json" \
  "https://api.telnyx.com/v2/calls/v3:550e8400-e29b-41d4-a716-446655440000_gRU1OGRkYQ/actions/ai_assistant_start"

Returns:

conversation_id

(uuid),

result

(string)

Stop AI Assistant

Stop an AI assistant on the call.

POST /calls/{call_control_id}/actions/ai_assistant_stop

Optional:

client_state

(string),

command_id

(string)

curl \
  -X POST \
  -H "Authorization: Bearer $TELNYX_API_KEY" \
  -H "Content-Type: application/json" \
  "https://api.telnyx.com/v2/calls/v3:550e8400-e29b-41d4-a716-446655440000_gRU1OGRkYQ/actions/ai_assistant_stop"

Returns:

result

(string)

Gather

Gather DTMF signals to build interactive menus. You can pass a list of valid digits. The

Answer

command must be issued before the

gather

command.

POST /calls/{call_control_id}/actions/gather

Optional:

client_state

(string),

command_id

(string),

gather_id

(string),

initial_timeout_millis

(int32),

inter_digit_timeout_millis

(int32),

maximum_digits

(int32),

minimum_digits

(int32),

terminating_digit

(string),

timeout_millis

(int32),

valid_digits

(string)

curl \
  -X POST \
  -H "Authorization: Bearer $TELNYX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
      "minimum_digits": 1,
      "maximum_digits": 4
  }' \
  "https://api.telnyx.com/v2/calls/v3:550e8400-e29b-41d4-a716-446655440000_gRU1OGRkYQ/actions/gather"

Returns:

result

(string)

Gather stop

Stop current gather. Expected Webhooks:

```
call.gather.ended
```

POST /calls/{call_control_id}/actions/gather_stop

Optional:

client_state

(string),

command_id

(string)

curl \
  -X POST \
  -H "Authorization: Bearer $TELNYX_API_KEY" \
  -H "Content-Type: application/json" \
  "https://api.telnyx.com/v2/calls/v3:550e8400-e29b-41d4-a716-446655440000_gRU1OGRkYQ/actions/gather_stop"

Returns:

result

(string)

Gather using AI

Gather parameters defined in the request payload using a voice assistant. You can pass parameters described as a JSON Schema object and the voice assistant will attempt to gather these informations.

POST /calls/{call_control_id}/actions/gather_using_ai

— Required:

parameters

Optional:

assistant

(object),

client_state

(string),

command_id

(string),

gather_ended_speech

(string),

greeting

(string),

interruption_settings

(object),

language

(object),

message_history

(array[object]),

send_message_history_updates

(boolean),

send_partial_results

(boolean),

transcription

(object),

user_response_timeout_ms

(integer),

voice

(string),

voice_settings

(object)

curl \
  -X POST \
  -H "Authorization: Bearer $TELNYX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "parameters": {
    "properties": {
      "age": {
        "description": "The age of the customer.",
        "type": "integer"
      },
      "location": {
        "description": "The location of the customer.",
        "type": "webhook"
      }
    },
    "required": [
      "age",
      "location"
    ],
    "type": "object"
  }
}' \
  "https://api.telnyx.com/v2/calls/v3:550e8400-e29b-41d4-a716-446655440000_gRU1OGRkYQ/actions/gather_using_ai"

Returns:

conversation_id

(uuid),

result

(string)

Gather using audio

Play an audio file on the call until the required DTMF signals are gathered to build interactive menus. You can pass a list of valid digits along with an 'invalid_audio_url', which will be played back at the beginning of each prompt. Playback will be interrupted when a DTMF signal is received.

POST /calls/{call_control_id}/actions/gather_using_audio

Optional:

audio_url

(string),

client_state

(string),

command_id

(string),

inter_digit_timeout_millis

(int32),

invalid_audio_url

(string),

invalid_media_name

(string),

maximum_digits

(int32),

maximum_tries

(int32),

media_name

(string),

minimum_digits

(int32),

terminating_digit

(string),

timeout_millis

(int32),

valid_digits

(string)

curl \
  -X POST \
  -H "Authorization: Bearer $TELNYX_API_KEY" \
  -H "Content-Type: application/json" \
  "https://api.telnyx.com/v2/calls/v3:550e8400-e29b-41d4-a716-446655440000_gRU1OGRkYQ/actions/gather_using_audio"

Returns:

result

(string)

Gather using speak

Convert text to speech and play it on the call until the required DTMF signals are gathered to build interactive menus. You can pass a list of valid digits along with an 'invalid_payload', which will be played back at the beginning of each prompt. Speech will be interrupted when a DTMF signal is received.

POST /calls/{call_control_id}/actions/gather_using_speak

— Required:

voice

payload

Optional:

client_state

(string),

command_id

(string),

inter_digit_timeout_millis

(int32),

invalid_payload

(string),

language

(enum: arb, cmn-CN, cy-GB, da-DK, de-DE, en-AU, en-GB, en-GB-WLS, en-IN, en-US, es-ES, es-MX, es-US, fr-CA, fr-FR, hi-IN, is-IS, it-IT, ja-JP, ko-KR, nb-NO, nl-NL, pl-PL, pt-BR, pt-PT, ro-RO, ru-RU, sv-SE, tr-TR),

maximum_digits

(int32),

maximum_tries

(int32),

minimum_digits

(int32),

payload_type

(enum: text, ssml),

service_level

(enum: basic, premium),

terminating_digit

(string),

timeout_millis

(int32),

valid_digits

(string),

voice_settings

(object)

curl \
  -X POST \
  -H "Authorization: Bearer $TELNYX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "payload": "Say this on the call",
  "voice": "Telnyx.KokoroTTS.af"
}' \
  "https://api.telnyx.com/v2/calls/v3:550e8400-e29b-41d4-a716-446655440000_gRU1OGRkYQ/actions/gather_using_speak"

Returns:

result

(string)

Webhooks

Webhook Verification

Telnyx signs webhooks with Ed25519. Each request includes

telnyx-signature-ed25519

and

telnyx-timestamp

headers. Always verify signatures in production:

# Telnyx signs webhooks with Ed25519 (asymmetric — NOT HMAC/Standard Webhooks).
# Headers sent with each webhook:
#   telnyx-signature-ed25519: base64-encoded Ed25519 signature
#   telnyx-timestamp: Unix timestamp (reject if >5 minutes old for replay protection)
#
# Get your public key from: Telnyx Portal > Account Settings > Keys & Credentials
# Use the Telnyx SDK in your language for verification (client.webhooks.unwrap).
# Your endpoint MUST return 2xx within 2 seconds or Telnyx will retry (up to 3 attempts).
# Configure a failover URL in Telnyx Portal for additional reliability.

The following webhook events are sent to your configured webhook URL. All webhooks include

telnyx-timestamp

and

telnyx-signature-ed25519

headers for Ed25519 signature verification. Use

client.webhooks.unwrap()

to verify.

Event	Description
`CallAIGatherEnded`	Call AI Gather Ended
`CallAIGatherMessageHistoryUpdated`	Call AI Gather Message History Updated
`CallAIGatherPartialResults`	Call AI Gather Partial Results
`callGatherEnded`	Call Gather Ended

Webhook payload fields

CallAIGatherEnded

Field	Type	Description
`data.record_type`	enum: event	Identifies the type of the resource.
`data.event_type`	enum: call.ai_gather.ended	The type of event being delivered.
`data.id`	uuid	Identifies the type of resource.
`data.occurred_at`	date-time	ISO 8601 datetime of when the event occurred.
`data.payload.call_control_id`	string	Call ID used to issue commands via Call Control API.
`data.payload.connection_id`	string	Telnyx connection ID used in the call.
`data.payload.call_leg_id`	string	ID that is unique to the call and can be used to correlate webhook events.
`data.payload.call_session_id`	string	ID that is unique to the call session and can be used to correlate webhook events.
`data.payload.client_state`	string	State received from a command.
`data.payload.from`	string	Number or SIP URI placing the call.
`data.payload.to`	string	Destination number or SIP URI of the call.
`data.payload.message_history`	array[object]	The history of the messages exchanged during the AI gather
`data.payload.result`	object	The result of the AI gather, its type depends of the `parameters` provided in the command
`data.payload.status`	enum: valid, invalid	Reflects how command ended.

CallAIGatherMessageHistoryUpdated

Field	Type	Description
`data.record_type`	enum: event	Identifies the type of the resource.
`data.event_type`	enum: call.ai_gather.message_history_updated	The type of event being delivered.
`data.id`	uuid	Identifies the type of resource.
`data.occurred_at`	date-time	ISO 8601 datetime of when the event occurred.
`data.payload.call_control_id`	string	Call ID used to issue commands via Call Control API.
`data.payload.connection_id`	string	Telnyx connection ID used in the call.
`data.payload.call_leg_id`	string	ID that is unique to the call and can be used to correlate webhook events.
`data.payload.call_session_id`	string	ID that is unique to the call session and can be used to correlate webhook events.
`data.payload.client_state`	string	State received from a command.
`data.payload.from`	string	Number or SIP URI placing the call.
`data.payload.to`	string	Destination number or SIP URI of the call.
`data.payload.message_history`	array[object]	The history of the messages exchanged during the AI gather

CallAIGatherPartialResults

Field	Type	Description
`data.record_type`	enum: event	Identifies the type of the resource.
`data.event_type`	enum: call.ai_gather.partial_results	The type of event being delivered.
`data.id`	uuid	Identifies the type of resource.
`data.occurred_at`	date-time	ISO 8601 datetime of when the event occurred.
`data.payload.call_control_id`	string	Call ID used to issue commands via Call Control API.
`data.payload.connection_id`	string	Telnyx connection ID used in the call.
`data.payload.call_leg_id`	string	ID that is unique to the call and can be used to correlate webhook events.
`data.payload.call_session_id`	string	ID that is unique to the call session and can be used to correlate webhook events.
`data.payload.client_state`	string	State received from a command.
`data.payload.from`	string	Number or SIP URI placing the call.
`data.payload.to`	string	Destination number or SIP URI of the call.
`data.payload.message_history`	array[object]	The history of the messages exchanged during the AI gather
`data.payload.partial_results`	object	The partial result of the AI gather, its type depends of the `parameters` provided in the command

callGatherEnded

Field	Type	Description
`data.record_type`	enum: event	Identifies the type of the resource.
`data.event_type`	enum: call.gather.ended	The type of event being delivered.
`data.id`	uuid	Identifies the type of resource.
`data.occurred_at`	date-time	ISO 8601 datetime of when the event occurred.
`data.payload.call_control_id`	string	Call ID used to issue commands via Call Control API.
`data.payload.connection_id`	string	Call Control App ID (formerly Telnyx connection ID) used in the call.
`data.payload.call_leg_id`	string	ID that is unique to the call and can be used to correlate webhook events.
`data.payload.call_session_id`	string	ID that is unique to the call session and can be used to correlate webhook events.
`data.payload.client_state`	string	State received from a command.
`data.payload.from`	string	Number or SIP URI placing the call.
`data.payload.to`	string	Destination number or SIP URI of the call.
`data.payload.digits`	string	The received DTMF digit or symbol.
`data.payload.status`	enum: valid, invalid, call_hangup, cancelled, cancelled_amd, timeout	Reflects how command ended.