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Show HN: Plugin to Connect Pi to Signal

A developer released a hobby plugin that connects the Pi coding agent with Signal, allowing users to send Note-to-Self messages from their phone or desktop for processing and receiving replies. The plugin supports model switching, session management, and message streaming in memory, using signal-cli on the user's own machine.

read1 min views1 publishedJul 8, 2026

Hi, I made this plugin to connects Pi coding agent and Signal as a hobby weekend project. You send a Note-to-Self message from your phone/desktop, pi picks it up, processes it, and it texts you back the answer.

Install it, run the setup wizard (or via /signal-setup), link your Signal number, and that's it. Some of the things it does:

  • reply to signal messages with reaction to so you know when it's processing/done. - ability to send a response to someone else in your contacts. Just say "send this to Mike" and it looks up the number and texts them, then confirms back to you. - you can switch models, start a new sessions, /resume without turning off the service. - only Note-to-Self messages are processed, everything from other people is ignored. - messages are streamed in-memory, nothing is written to a log file on disk (you can switch it on/off if you want to write to journalctl). - it uses signal-cli on your own machine with your own linked device.

It's a hobby project, so if you run into issues let me know and I'm happy to fix them.

Link: [https://github.com/aalzubidy/pi-signal](https://github.com/aalzubidy/pi-signal) (available on NPM as well @aalzubidy/pi-signal)

Comments URL: [https://news.ycombinator.com/item?id=48828549](https://news.ycombinator.com/item?id=48828549)

Points: 1

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