api/javascript/telnyx-voice-media-javascript/SKILL.md
Play audio files, use text-to-speech, and record calls. Use when building IVR systems, playing announcements, or recording conversations. This skill provides JavaScript SDK examples.
npx skillsauth add team-telnyx/telnyx-toolkit telnyx-voice-media-javascriptInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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npm install telnyx
import Telnyx from 'telnyx';
const client = new Telnyx({
apiKey: process.env['TELNYX_API_KEY'], // This is the default and can be omitted
});
All examples below assume client is already initialized as shown above.
Play an audio file on the call.
POST /calls/{call_control_id}/actions/playback_start
const response = await client.calls.actions.startPlayback('call_control_id');
console.log(response.data);
Stop audio being played on the call.
POST /calls/{call_control_id}/actions/playback_stop
const response = await client.calls.actions.stopPlayback('call_control_id');
console.log(response.data);
Pause recording the call.
POST /calls/{call_control_id}/actions/record_pause
const response = await client.calls.actions.pauseRecording('call_control_id');
console.log(response.data);
Resume recording the call.
POST /calls/{call_control_id}/actions/record_resume
const response = await client.calls.actions.resumeRecording('call_control_id');
console.log(response.data);
Start recording the call.
POST /calls/{call_control_id}/actions/record_start — Required: format, channels
const response = await client.calls.actions.startRecording('call_control_id', {
channels: 'single',
format: 'wav',
});
console.log(response.data);
Stop recording the call.
POST /calls/{call_control_id}/actions/record_stop
const response = await client.calls.actions.stopRecording('call_control_id');
console.log(response.data);
Convert text to speech and play it back on the call.
POST /calls/{call_control_id}/actions/speak — Required: payload, voice
const response = await client.calls.actions.speak('call_control_id', {
payload: 'Say this on the call',
voice: 'female',
});
console.log(response.data);
The following webhook events are sent to your configured webhook URL.
All webhooks include telnyx-timestamp and telnyx-signature-ed25519 headers for verification (Standard Webhooks compatible).
| Event | Description |
|-------|-------------|
| callPlaybackStarted | Call Playback Started |
| callPlaybackEnded | Call Playback Ended |
| callSpeakEnded | Call Speak Ended |
| callRecordingSaved | Call Recording Saved |
| callRecordingError | Call Recording Error |
| callRecordingTranscriptionSaved | Call Recording Transcription Saved |
| callSpeakStarted | Call Speak Started |
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