Run fx in Agentastic
An ACP-compatible terminal coding agent with unattended execution, session resume, and recovery for interrupted turns.
What Agentastic adds
Give every task its own worktree, branch, or container.
Keep fx's real CLI and your existing configuration.
Inspect the diff, run code review, test, and open a pull request.
Launch fx
- Install the official CLI and sign in with your existing provider account.
- Open a repository in Agentastic. The connection is discovered from your PATH.
- Open Agent Home, choose fx, describe the task, and select worktree, local, container, cloud, or remote mode.
Every run gets its own git worktree, so three tasks can share a repository without sharing a branch or a build directory.
What fx supports
- Launch from a task description: supported
Type the task in Agent Home and Agentastic hands it to fx at launch, so the run starts from your prompt instead of an empty session.
- Unattended runs: supported
fx can run without stopping for per-tool confirmation, which is what makes an overnight or scheduled run finish on its own.
- Plan before editing: not supported
Agentastic keeps plan mode out of the picker for fx rather than emulating it, so runs begin with edits.
- Resume a session: supported
Reopen the last fx session for a worktree and keep its history — useful when reviewing the diff turns up one more change.
- Structured chat: supported
Talk to fx in a native chat that renders thinking, nested tool calls, plans, and permission requests as structured events instead of scraped terminal output.
- Code review: not supported
fx writes the change; pair it with a review-capable agent for the pass before merge.
Agentastic reads these from fx's own CLI rather than emulating them, and modes it does not support stay out of the picker. The provider reference lists the exact flags for each launch, and how to compare coding agents covers what changes when you switch harnesses.
fx questions
Is there a GUI for fx?
Yes. Agentastic runs the real fx CLI (fx) in a native Mac workspace with a git worktree, terminal, diff view, and code review for each task, plus a structured chat view of the session.
How do I run multiple fx sessions in parallel?
Start each task from Agent Home in worktree mode. Agentastic gives every run its own git worktree and terminal, so several fx sessions can work in one repository without editing the same files.
How do I install fx?
Run curl -fsSL https://fx.sh/setup.sh | bash, then sign in the way fx's documentation describes. Agentastic finds the fx command on your PATH when you open a repository.
Does Agentastic charge for fx?
No. Agentastic is free and does not proxy model calls. It launches fx with the credentials and plan you already use, so any usage is billed by your provider, not by Agentastic.