Nexus ACP

AI Coding Agents in VS Code via the Agent Client Protocol (ACP)

Chat with Claude, OpenCode, and other ACP-compatible AI agents directly in your editor. No context switching, no copy-pasting code.

Features

• Multi-Agent Support — Connect to OpenCode, Claude Code, or any ACP-compatible agent
• Native Chat Interface — Integrated chat that feels like part of VS Code
• Multi-Tab Chat — Open multiple chat sessions simultaneously
• Session Management — Save and restore chat sessions
• Tool Visibility — See what commands the AI runs with expandable input/output
• Rich Markdown — Code blocks, syntax highlighting, and formatted responses
• Streaming Responses — Watch the AI think in real-time
• Mode & Model Selection — Switch between agent modes and models on the fly
• File & Code Attachments — Send selected code or files directly to chat

Requirements

You need at least one ACP-compatible agent installed:

• OpenCode
• Claude Code

Installation

From VS Code Marketplace

1. Open VS Code
2. Go to Extensions (Cmd+Shift+X / Ctrl+Shift+X)
3. Search for "Nexus ACP"
4. Click Install

Usage

Quick Start

1. Click the Nexus icon in the Activity Bar (left sidebar)
2. Or click the Nexus icon in the editor title bar
3. Select your preferred agent from the dropdown
4. Start chatting!

Multi-Tab Chat

• Click the Nexus icon in the title bar to open a new chat tab
• Each tab maintains its own session and connection
• Switch between tabs to context-switch between conversations

Attaching Code

• Selected Code: Right-click on selected code → "Send to Nexus Chat"
• Files: Right-click on a file in Explorer → "Send to Nexus Chat"

Tool Calls

When the AI uses tools (like running commands or reading files), you'll see them in a collapsible section:

• ⋯ — Tool is running
• ✓ — Tool completed successfully
• ✗ — Tool failed

Click on any tool to see the command input and output.

Supported Agents

The extension auto-detects installed agents: