Telnyx Outgoing Call Skill

VerifiedCaution

Initiates phone calls via the Telnyx API. Defines a task for the call AI to introduce itself and engage in conversation.

Sby Skills Guide Bot
ProductivityIntermediate
007/23/2026
Claude CodeCursorWindsurfCopilotCodex
#telnyx#phone-call#outgoing-call#api#communication

Recommended for

Our review

Allows an AI assistant to initiate and manage outgoing phone calls via the TelnyxOpenClaw API.

Strengths

  • Simple integration with a single POST request
  • Automatic handling of introduction and conversation flow
  • Support for conversational mode with DTMF interruption

Limitations

  • Requires a local server and prior configuration (URL, .env)
  • Does not handle incoming calls or SMS
  • Dependent on network quality and Telnyx service
When to use it

When you need to contact a user by phone for reminders, urgent notifications, or automated follow-ups.

When not to use it

For purely text-based or asynchronous interactions, or when the user has not consented to being called.

Security analysis

Caution
Quality score85/100

The skill instructs the AI to make POST requests to a local API for placing phone calls. While the API itself may be legitimate, it introduces a network action that could be abused if the AI is tricked into calling arbitrary numbers or sending crafted tasks.

Findings
  • Involves sending network requests to a local server, which could be manipulated to initiate unauthorized calls.

Examples

Call user for appointment reminder
Initiate a phone call to +1234567890 with the task: Remind the user about their dentist appointment tomorrow at 10 AM.
Call default number for urgent notification
Call the default number with task: Notify the user that their order has been shipped and provide tracking details.

name: Telnyx Outgoing Call Skill description: Instructions for an AI to initiate and manage phone calls via the TelnyxOpenClaw API.

Telnyx Outgoing Call Skill

This skill allows an AI assistant to initiate phone calls to users and carry out specific tasks via a telephone interface.

Capabilities

  • Initiate a phone call to a specific number.
  • Provide a task that the call AI will use to introduce itself.
  • Automatically handle the transition from the task introduction to a back-and-forth conversation.

API Documentation

BASE URL: http://localhost:3023 (may differ)

POST /call

Initiates an outgoing call.

Request Body:

{
  "task": "The specific reason for the call (e.g., 'Remind the user about their dentist appointment')",
  "to": "+1234567890" (optional, defaults to DEFAULT_TO_NUMBER in .env)
}

Workflow for the AI:

  1. Identify Need: When you need to contact a user via phone (e.g., for a reminder, urgent notification, or follow-up).
  2. Formulate Task: Write a concise task description. The call AI will use this to generate its own greeting.
  3. Execute: Send a POST request to the /call endpoint.

How it works internally

  1. The server receives the task.
  2. An LLM generates a friendly, task-specific intro (e.g., "Hello, I'm calling to remind you about...").
  3. The call is placed via Telnyx.
  4. When answered, the intro is played.
  5. The system then enters a recording loop, allowing for a natural conversation.
  6. The user can press any key (DTMF) to stop a recording and force the AI to respond immediately.
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