fx
fx is a terminal coding agent that edits files and runs commands for developers working in a project folder.
What it is good for
- Editing project files from a terminal with an AI agent
- Running shell commands and tests through an AI assistant
- Automating coding tasks from scripts and CI jobs
- Connecting an AI coding agent to tools like Slack
At a glance
- Who it is for
- Setup
- Guided command-line setup
Level 4 of 5. You copy and paste commands into a terminal by following the instructions. Comfortable territory for vibe coders.
- Cost
- Free tier plus paid plans
- Type
- Agent app
- Tasks
- Works with
- Vercel AI Gateway, ChatGPT, Grok, Ollama, OpenRouter, Slack
Momentum
- Rank this week
- Not ranked yet
- Best rank
- None yet
- GitHub stars
- 3,717
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 fx free?
- It has a free plan and paid plans, according to its own description.
- Do I need to know how to code to use fx?
- You do not need to write code, but setup means copying and pasting commands into a terminal by following its instructions.
- What does fx work with?
- According to its own documentation, it works with Vercel AI Gateway, ChatGPT, Grok, Ollama, OpenRouter, and Slack.
- What is fx good for?
- Editing project files from a terminal with an AI agent, running shell commands and tests through an AI assistant, automating coding tasks from scripts and CI jobs, and connecting an AI coding agent to tools like Slack.
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