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Agent Client Protocol (ACP)

JSON-RPC protocol that lets any code editor run any coding agent, locally over stdio or remotely over HTTP.

Reference by Created by Zed Industries

IndexedApache-2.0★ 4,494
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About

Defines the messages between a code editor (client) and a coding agent for sessions, prompts, file edits, tool calls and permissions.

Use cases: code-generation

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About the protocol

Current version
Protocol version 1 (stable)github.com
Maintainer
Created by Zed Industrieszed.dev
Launched
2025-08-27zed.dev
  • Zed launched ACP with Gemini CLI as the first reference agent. zed.dev
  • Clients include Zed, JetBrains IDEs, Neovim and Emacs plugins, and several VS Code extensions. agentclientprotocol.com

Listings that use it

27 visible listings declare Agent Client Protocol (ACP): 27 agents.

Signals

Stars
4,494
Forks
447
Open issues
5
Last commit
Oct 24, 2026 (4 days ago)
Last release
Oct 16, 2026 (12 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Version
Protocol version 1 (stable)
License
Apache-2.0
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Cite this page

Agent Client Protocol (ACP). Agent Mart. https://agentmart.dev/reference/agent-client-protocol (last updated 2026-10-24)