I built xSignalBot: an auto-reply bot for Signal that answers with a local LLM via Ollama — zero cloud, zero cost

Disclaimer: I'm the developer of this project — sharing because it might be useful to others running self-hosted AI. (Full transparency, as Reddit's self-promo etiquette expects.) xSignalBot is an open-source auto-reply bot for Signal that answers incoming messages using a local LLM via Ollama — no cloud APIs, no costs, and no message ever leaves your machine. How it works Signal message → signal-cli (WSL2 daemon) → Python bridge → Ollama (qwen2.5:14b locally) → auto-send / approval → reply shown in desktop app + phone signal-cli runs as a persistent JSON-RPC daemon in WSL2 (no polling, no JVM restart per message) Ollama (qwen2.5:14b) generates the reply locally — works fully offline Replies sync to all your Signal devices (desktop app + phone), so you always see what the bot sent Features 🤖 7 reply tones: Standard, Sad, Cheerful, Reserved, Funny, Silly (long), Financial Advisor — each with fitting emojis 🧠 Per-contact chat history (last 100 messages as context) — the bot remembers the conversation ⏱️ Auto-send (3 s countdown) or manual approval — your choice 🛡️ Whitelist-only: replies go ONLY to contacts you explicitly allow 🧪 Test mode that never actually sends 💬 Typing indicator ("… is typing") while generating 🖥️ Tkinter control panel: manage whitelist, pick tones, health check, single-instance protection 📈 Optional "Financial Advisor" tone that gives gloriously absurd market advice (Bitcoin hamsters included 🐿️📈) Tech stack Messaging: signal-cli 0.14.7 (WSL2 daemon, JSON-RPC) AI: Ollama + qwen2.5:14b (local, free) UI: Python 3 / Tkinter Platform: Windows + WSL2 Links GitHub: https://github.com/immerzu/xSignalBot (MIT license) README with full setup instructions: WSL2 + signal-cli linking (QR code), Ollama install, config (whitelist, tones) Why I built it I wanted a free, private auto-responder for Signal that runs entirely on my own hardware — no cloud AI, no per-message costs, full control over who gets answered. It's been running stable for me, so I'm sharing it in case others find it useful. Feedback, issues, and PRs welcome! 🙌 submitted by /u/Even_Command_5636 [link] [comments]

Source: r/ollama | 2026-08-05