A powerful telephony integration allowing AI agents to initiate, manage, and conclude voice calls through major providers like Twilio and Telnyx.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install voiceskill
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install voiceskill using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Voice Call?
The Voice Call skill is a robust communication extension for Openclaw Skills that bridges the gap between AI logic and real-world telephony. It enables developers to build agents capable of performing outbound dialing, delivering voice messages, and maintaining interactive conversations. By leveraging the voice-call plugin, agents can move beyond text-based chat into high-impact voice interactions.
This skill supports enterprise-grade providers including Twilio, Telnyx, and Plivo, ensuring reliable global reach. For development and testing environments, a mock provider is available to simulate call flows without incurring costs or requiring network connectivity, making it an essential tool for building sophisticated voice-enabled Openclaw Skills.
Voice Call Use Cases
- Automating outbound notifications and critical alerts to users via phone.
- Building AI-driven appointment reminders and confirmation systems.
- Developing interactive voice response (IVR) systems where an agent handles the dialogue.
- Conducting automated follow-ups or surveys through agent-initiated calls.
- Rapid prototyping of telephony workflows using the built-in mock provider.
How Voice Call Works
- The Openclaw agent identifies a trigger requiring a phone call and invokes the initiate_call action.
- The system checks for the enabled voice-call plugin and specific provider configurations (Twilio, Telnyx, or Plivo).
- A call is dispatched to the target number with the initial specified message.
- The agent can use the callId to monitor the status or send additional messages using continue_call.
- Upon completion of the interaction, the agent executes the end_call action to terminate the connection.
Voice Call Setup
To use this feature within Openclaw Skills, you must enable the plugin and configure your preferred provider in your configuration file.
# Example CLI usage to start a call
openclaw voicecall call --to "+15555550123" --message "Hello from OpenClaw"
# Check the status of an ongoing call
openclaw voicecall status --call-id <id>
Ensure your config under plugins.entries.voice-call.config includes your credentials:
- Twilio: accountSid, authToken, and fromNumber.
- Telnyx: apiKey, connectionId, and fromNumber.
- Plivo: authId, authToken, and fromNumber.
- Mock: Set
provider: "mock"for local testing.
Voice Call Data Schema & Taxonomy
The skill manages call state and metadata through the following taxonomy:
| Attribute | Description |
|---|---|
callId |
Unique identifier for the active or historical call session. |
status |
The current state of the call (e.g., queued, ringing, in-progress, completed). |
provider |
The active telephony gateway being utilized (Twilio, Telnyx, Plivo, or Mock). |
message |
The string of text to be converted to speech during the call. |
fromNumber |
The authorized outgoing caller ID configured in the plugin settings. |
Voice Call Advanced Features
- Multi-provider support allowing seamless switching between Twilio, Telnyx, and Plivo.
- Dynamic conversation management via the continue_call and speak_to_user tools.
- Real-time status tracking for programmatic handling of busy signals or unanswered calls.
- Mock provider integration for local-first development and CI/CD testing without external API dependencies.
- Agent-controlled call termination for precise flow control in Openclaw Skills.
SKILL.md
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