Ferngeist

Tamim Arafat

About this app

Ferngeist is a mobile client for coding agents that speak the Agent Client Protocol (ACP). Connect to your agents and chat with them from your phone — review changes, run tools, and follow along with rich, readable transcripts wherever you are.

Features:
• Chat with ACP-compatible coding agents on the go
• Rich rendering of messages, reasoning, code diffs, and tool calls
• Resilient sessions that survive disconnects and reconnect automatically
• Optional Ferngeist ACP Gateway pairing to auto-detect local agents behind a single secure endpoint
• Push notifications with deep links straight to the active chat
• Fast, smooth, modern Material 3 interface

Ferngeist is free and open source (MIT). Learn more and view the source at https://github.com/arafatamim/Ferngeist

What’s new

Custom ACP agents you can manage from the app.

• Add and delete your own agents on a paired gateway
• The agent list now separates "Custom agents" from "Built-in agents"
• Fixed: the multi-pane workspace on 7-inch landscape tablets
• Fixed: a new chat no longer borrows another chat's agent process