acpx 🤝 — Agents talking to agents, minus the terminal séance

acpx is a headless command-line client for the Agent Client Protocol (ACP). It gives agents, orchestrators, and developers one structured interface for persistent sessions, one-shot runs, permissions, and machine-readable output across ACP-compatible coding agents.

$ acpx codex sessions new
<session-id>
$ acpx codex "summarize this repository"
[tool] Read README.md (completed)
This repository contains ...
[done] end_turn

[!NOTE] acpx is pre-1.0. Treat its CLI and runtime interfaces as evolving.

Install

Install the published npm package globally:

npm install -g acpx@latest

acpx requires Node.js 22.13 or newer. To try it without a global install, prefix a command with npx acpx@latest instead. See the install guide for adapter prerequisites, updates, and source builds.

Quick start

Install and authenticate the coding agent you want to use, then create a session in your project and send it a prompt:

acpx codex sessions new
acpx codex "find the slowest test and explain why"

The session is scoped to the current repository and persists across invocations. Creating sessions explicitly prevents automation from starting an unexpected conversation. The quickstart continues with named sessions, one-shot runs, history, and JSON output.

Choose an agent

These 30 built-in launch profiles share one command shape. Each guide covers the required CLI or adapter, authentication, and capability limits. Ante is experimental.

This is the beginning of the README. Read the rest at the original. Read the full README ↗