Vapi Calls - Agent Instructions

Use this skill to perform any task that requires voice interaction over the phone.

Configuration & Network Requirements

⚠️ IMPORTANT: This skill requires your machine to be reachable from the internet to receive real-time call updates.

1. Environment Variables

Configure these in your OpenClaw config.json (or Gateway env):

• VAPI_API_KEY: Your Vapi Private API Key.
• VAPI_ASSISTANT_ID: The ID of the Vapi Assistant to use as a base.
• VAPI_PHONE_NUMBER_ID: The ID of the Vapi Phone Number.
• WEBHOOK_BASE_URL: Crucial. The public HTTPS URL where this agent is reachable (e.g., https://my-claw.com or https://xyz.ngrok-free.app). Do not include a trailing slash.
• WEBHOOK_PORT (Optional): The local port to listen on (Default: 4430).
• VAPI_LLM_PROVIDER: (Optional) Provider for Custom Mode (Default: openai).
• VAPI_LLM_MODEL: (Optional) Model for Custom Mode (Default: gpt-4o-mini).