OpenClaw Signal Integration
Signal is messenger with highest level of privacy (end-to-end encryption, open-source protocol). Integration relevant for companies requiring communication confidentiality: law firms, financial structures, healthcare, government organizations.
Technical Features
Signal has no official Bot API. Integration is implemented via Signal-CLI (Java command-line application) or signal-bot-sdk (unofficial wrapper). This imposes limitations: one phone number per bot, absence of rich media buttons.
What Gets Implemented
Separate phone number (SIM or VoIP) is registered as agent Signal account. signal-cli polling → new messages → OpenClaw agent → response via signal-cli. Support for text, documents, voice notes.
Limitations
No official API — possible instabilities with Signal updates. One instance per number. No group bots in full sense. Recommended for small user count (<100) with high privacy requirements.
Timeline: 3–5 Days
Main complexity — signal-cli setup and number registration.