---
name: vapi-calls
description: Advanced AI voice assistant for phone calls. Capable of persuasion, sales, restaurant bookings, reminders, and notifications.
emoji: 📞
author: César Morillas
version: 1.0.0
license: MIT
repository: https://github.com/vapi-ai/openclaw-vapi-calls
requires:
  env:
    - VAPI_API_KEY
    - VAPI_ASSISTANT_ID
    - VAPI_PHONE_NUMBER_ID
    - WEBHOOK_BASE_URL
  bins:
    - python3
  pip:
    - requests
tools:
  - name: make_vapi_call
    description: Triggers an autonomous AI phone call with a specific mission and waits for the final report.
    parameters:
      type: object
      properties:
        phone_number:
          type: string
          description: "Recipient's phone number (E.164 format, e.g., +34669000000)."
        first_message:
          type: string
          description: "Initial greeting. Use 'DEFAULT' to use the agent's configured greeting."
        system_prompt:
          type: string
          description: "AI instructions. Use 'DEFAULT' to use the agent's configured model/prompt. If custom text is provided, the call will force GPT-4o Mini + endCall tool."
        end_message:
          type: string
          description: "Optional. Final phrase. Use 'DEFAULT' to skip override."
      required: [phone_number, first_message, system_prompt]
---

# 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`).

### 2. Connectivity Setup
You must expose the `WEBHOOK_PORT` (default 4430) to the internet.

**Option A: Cloudflare Tunnel (Recommended)**
`cloudflared tunnel --url http://localhost:4430`

**Option B: Ngrok**
`ngrok http 4430`

Set `WEBHOOK_BASE_URL` to the generated URL (e.g., `https://random-name.trycloudflare.com`).

## Usage

### Custom Mission (Dynamic)
Provide a specific `system_prompt`. The system will automatically use **GPT-4o Mini** and enable the **endCall** tool. The AI will be able to hang up autonomously.

### Native Agent (Static)
Pass `"DEFAULT"` for `first_message`, `system_prompt`, and `end_message`. The system will use the exact configuration (Model, Voice, Prompt) defined in the Vapi Dashboard.

## Troubleshooting

- **Call hangs / No report:** Check if `WEBHOOK_BASE_URL` is reachable from the internet. The Python script spins up a temporary server on `WEBHOOK_PORT` only during the call.
- **API 400 Error:** Check your `VAPI_PHONE_NUMBER_ID` and `VAPI_ASSISTANT_ID`.


---
Source attribution: kbarbel640-del
Original project: https://github.com/kbarbel640-del/skills/blob/e7e336ac628c3e3bd771aff1aaa469c93778f94a/skills/cmorillas99-cyber/vapi-calls/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2026 clawdbot

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: kbarbel640-del
Original project: https://github.com/kbarbel640-del/skills/blob/e7e336ac628c3e3bd771aff1aaa469c93778f94a/skills/cmorillas99-cyber/vapi-calls/SKILL.md
Attribution basis: Source repository record

Fields of work: Marketing, Sales
Roles: Business Development, Customer Success Manager, Growth Marketer, Sales Engineer, Sales Development Rep (SDR)
Specialties: Specialty not specified
Tools: Vapi
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: a406a27840ed578616db4c8a08c2a782e2b396e3d564ef767c9e96a682ce7f7b