Mercury
Mercury is an agent app that runs on your own machine and keeps working in the background, for people who want a personal assistant that remembers them and asks before acting.
What it is good for
- Running a personal assistant that remembers preferences across chats
- Keeping a background agent working while the laptop is closed
- Chatting with an agent from Telegram, Discord, Slack, or Signal
- Setting limits on which files and commands an agent can touch
At a glance
- Who it is for
- Setup
- Install a desktop app or browser extension
Level 3 of 5. Download and install it like any other app or extension.
- Cost
- Free and open source
- Type
- Agent app
- Tasks
- Works with
- Telegram, Discord, Slack, Signal, Terminal, Ollama
Momentum
- Rank this week
- Not ranked yet
- Best rank
- None yet
- GitHub stars
- 3,763
GitHub numbers as of Nov 2, 2026. Updated weekly.
Official links
Setup steps are on the official pages. We do not repeat them here, since they change.
Questions
- Is Mercury free?
- Yes. It is free and open source (MIT license).
- Do I need to know how to code to use Mercury?
- No. Download and install it like any other app or extension.
- What does Mercury work with?
- According to its own documentation, it works with Telegram, Discord, Slack, Signal, Terminal, and Ollama.
- What is Mercury good for?
- Running a personal assistant that remembers preferences across chats, keeping a background agent working while the laptop is closed, chatting with an agent from Telegram, Discord, Slack, or Signal, and setting limits on which files and commands an agent can touch.
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