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Install in OpenClaw
/install supercall
Description
Make AI-powered phone calls with custom personas and goals. Uses OpenAI Realtime API + Twilio for ultra-low latency voice conversations. Supports DTMF/IVR na...
Usage Guidance
Install only if you are comfortable with an agent making real phone calls through your Twilio account, potentially using personas that do not disclose AI status. Configure tunnels and publicUrl deliberately, protect all API keys and hook tokens, confirm call consent and recording laws, and plan how to review, rotate, or delete stored transcripts.
Capability Analysis
Type: OpenClaw Skill
Name: supercall
Version: 2.0.0
The skill is classified as suspicious due to its inherent high-risk capabilities and a potential vulnerability. It explicitly spawns external processes (`ngrok`, `tailscale` CLI binaries) for tunneling, opens a local HTTP server, makes outbound network requests to Twilio and OpenAI, and persists sensitive call transcripts to disk (`~/clawd/supercall-logs`). While these actions are documented and necessary for its stated purpose of AI-powered phone calls, the `src/manager.ts` file contains a self-test mechanism that sends an internal `selfTestSecret` to the configured `publicUrl`. If `publicUrl` is misconfigured to an unintended external endpoint, this secret could be unintentionally exfiltrated, representing a vulnerability. There is no clear evidence of intentional malicious behavior such as unauthorized data exfiltration, backdoors, or prompt injection against the OpenClaw agent itself; the internal prompts are designed to guide the AI model's behavior during calls.
Capability Assessment
Purpose & Capability
The core phone-calling, Twilio, OpenAI Realtime, DTMF, webhook, and tunnel capabilities are coherent with the stated purpose, but arbitrary personas plus instructions not to reveal AI status create a material deception and social-engineering risk.
Instruction Scope
The tool can initiate real outbound calls from agent invocation without a built-in confirmation gate or allowlist, and completed call transcripts are posted into /hooks/wake as active agent input.
Install Mechanism
The package uses a normal npm-style install and documents required Twilio/OpenAI credentials and optional ngrok/Tailscale binaries, but the plugin manifest does not fully represent the runtime file, network, subprocess, and public-listener scope.
Credentials
Opening a webhook server, using tunnels, calling Twilio/OpenAI, and spawning ngrok or Tailscale are expected for this skill, but automatic exposure paths and public call handling need explicit operator control.
Persistence & Privilege
Full call records, including phone numbers, session keys, metadata, and transcripts, are appended to local JSONL logs without visible encryption, retention limits, or deletion controls; Twilio recording is enabled by default.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install supercall - After installation, invoke the skill by name or use
/supercall - Provide required inputs per the skill's parameter spec and get structured output
Version History
v2.0.0
SuperCall 2.0.0 — adds AI-powered DTMF/IVR phone menu navigation
- AI can now generate and inject DTMF (touch-tone) digits to autonomously navigate automated phone menus (IVR systems).
- New DTMF/IVR navigation feature is fully automatic; no extra setup required for agents or users.
- Updated documentation to reflect DTMF/IVR support and explain character/code options.
- Significant internal refactor: removed core-bridge.ts/provider index, added dtmf.ts module.
- No breaking changes to existing persona calling or realtime features.
v1.3.2
- Improved webhook verification for Twilio to better handle signature mismatches on ngrok free-tier domains.
- Security logic relaxed for webhook requests from `.ngrok-free.app` and `.ngrok.io` domains to allow through signature mismatches, matching actual domain rewriting behavior.
- No changes to user-facing API or configuration.
v1.3.1
- Updated credential requirements to clarify that ngrok credentials are optional and only needed if using ngrok as a tunnel provider
- Installation instructions and requirements are unchanged
- Metadata changed to support either ngrok or tailscale for tunneling (`anyBins` instead of just `ngrok`)
- Noted that the plugin may use ngrok or tailscale CLI, and explained how process spawning, networking, and webhook verification works for each
- Expanded security notes into a dedicated "Runtime Behavior and Security" section detailing process spawning, network listeners, self-tests, webhook verification, and data storage practices
- Clarified best practices around protecting credentials, verifying tunnel config, and managing logs
v1.3.0
Supercall 1.3.0 introduces expanded credential support, improved documentation, and adds project files for better development workflow.
- Added explicit credential requirements and environment variable support for OpenAI, Twilio, and ngrok in documentation
- Updated SKILL.md with a new “Credentials Required” section and detailed security notes
- Expanded metadata to declare required environment variables and binaries
- Added developer project files: .gitignore, .npmignore, and LICENSE for improved code management and distribution
v1.2.0
- Added detailed documentation outlining new features, installation, configuration, and usage instructions.
- Introduced persona-based autonomous AI phone calls using OpenAI Realtime API and Twilio.
- Enabled ultra-low latency (<1s) bidirectional voice conversations and streaming audio over WebSocket.
- Added support for multiple actions: persona_call, get_status, end_call, and list_calls.
- Improved security by isolating gateway agent access compared to the standard voice_call plugin.
- Provided mock provider support for testing, alongside comprehensive configuration options.
Metadata
Frequently Asked Questions
What is Supercall?
Make AI-powered phone calls with custom personas and goals. Uses OpenAI Realtime API + Twilio for ultra-low latency voice conversations. Supports DTMF/IVR na... It is an AI Agent Skill for Claude Code / OpenClaw, with 5819 downloads so far.
How do I install Supercall?
Run "/install supercall" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Supercall free?
Yes, Supercall is completely free (open-source). You can download, install and use it at no cost.
Which platforms does Supercall support?
Supercall is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Supercall?
It is built and maintained by xonder (@xonder); the current version is v2.0.0.
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