OpenClaw Agent Gains Phone Call Capability Through Custom Skill

A developer has built a custom skill for self-hosted OpenClaw agents that enables phone call functionality, allowing the agent to reach users via actual phone calls when triggered by specific events.

How It Works

The skill lets users tell their OpenClaw agent "call me when X happens" and then receive a phone call when that condition is met. During the call, the agent maintains all its chat capabilities: users can ask it to search the web, set up alerts, or perform other tasks. The agent puts users on hold with music while working and returns with answers.

Setup and Implementation

The developer created a simplified alternative to OpenClaw's native phone call plugin, which requires setting up a Twilio account, API keys, and webhooks. This custom version requires only pasting one setup prompt to give the agent phone functionality.

Use Cases

• Morning briefings
• Price alerts
• Build completion notifications ("call me when my build finishes")
• Server monitoring ("call me if the server goes down")

Technical Details

The developer is based in Portugal and has tested the system with international calls, confirming it works without issues. The implementation allows for natural conversation flow where users can simply say "bye" to end the call.