Patter
Open-source SDK to connect AI agents to phone calls in 4 lines of code
Visit getpatter.com ↗What is Patter?
Patter is an open-source SDK that enables developers to add phone capabilities to AI agents. It handles the full voice stack—agent loop, speech-to-text, text-to-speech, real-time voice processing, and carrier integration—allowing you to swap providers at each layer. Available in Python and TypeScript with sub-500ms latency and MIT licensing.
The SDK supports 27+ provider integrations across LLM, STT, TTS, realtime engines, and telephony carriers like Twilio, Telnyx, and Plivo. Developers can run locally with a built-in tunnel, test calls from the terminal without a phone, or deploy to production. The project describes itself as an alternative to Vapi and Retell for builders wanting full control over their voice infrastructure.
Momentum
Daily activity over the last 30 days: upvotes, unique visits, new GitHub stars and Hacker News points.
How do we know it's vibe coded?
vibetrend discovered Patter automatically. Evidence: GitHub PatterAI/Patter; repo has AGENTS.md. View source.
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