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Patter
github.com
Open-source voice-AI SDK. The Vapi/Retell alternative for builders who want to own the stack. Give your AI agent a phone number in 4 lines — Python and TypeScript, MIT licensed, Twilio, Telnyx, and Plivo.
LibraryOpen source
Install and connect
From the official MCP Registry, Homebrew, npm, PyPI, and crates.io. Matched by repository or domain once a day.
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