Ngent

Web Service Wrapper for ACP-compatible Agents

Ngent wraps command-line agents that speak the Agent Client Protocol (ACP) into a web service, making them accessible via HTTP API and Web UI.

What is Ngent?

Ngent acts as a bridge between ACP-compatible agents (like Claude Code, Codex, Gemini CLI, Kimi CLI) and web clients:

┌─────────────┐     HTTP/WebSocket     ┌─────────┐     JSON-RPC (ACP)     ┌──────────────┐
│  Web UI     │ ◄────────────────────► │  Ngent  │ ◄────────────────────► │  CLI Agent   │
│  /v1/* API  │   SSE streaming        │  Server │   stdio                │  (ACP-based) │
└─────────────┘                        └─────────┘                        └──────────────┘

How it Works

1. ACP Protocol: Agents like Claude Code, Codex, and Kimi CLI expose their capabilities through the Agent Client Protocol (ACP) — a JSON-RPC protocol over stdio
2. Ngent Bridge: Ngent spawns these CLI agents as child processes and translates their ACP protocol into HTTP/JSON APIs
3. Web Interface: Provides a built-in Web UI and REST API for creating conversations, sending prompts, and managing permissions

Features

• 🔌 Multi-Agent Support: Works with any ACP-compatible agent (Codex, Claude Code, Gemini, Kimi, Qwen, OpenCode)
• 🌐 Web API: HTTP/JSON endpoints with Server-Sent Events (SSE) for streaming responses
• 🖥️ Built-in UI: No separate frontend deployment needed — the web UI is embedded in the binary
• 🔒 Permission Control: Fine-grained approval system for agent file/system operations
• 💾 Persistent State: SQLite-backed conversation history across sessions
• 📱 Mobile Friendly: QR code for easy access from mobile devices on the same network

Supported Agents

Agent	Supported
Codex	✅
Claude Code	✅
Gemini CLI	✅
Kimi CLI	✅
Qwen Code	✅
OpenCode	✅

Installation

Quick Install (recommended for Linux/macOS)

curl -sSL https://raw.githubusercontent.com/beyond5959/ngent/master/install.sh | bash

# Or install to a custom directory:
curl -sSL https://raw.githubusercontent.com/beyond5959/ngent/master/install.sh | INSTALL_DIR=~/.local/bin bash

Run

Start with default settings (local-only):

ngent

LAN-accessible mode (allows connections from other devices):

ngent --allow-public=true

Custom port:

ngent --port 8080

With authentication:

ngent --auth-token "your-token"

Show all options:

ngent --help

Default paths:

• Database: $HOME/.ngent/ngent.db

Notes:

• /v1/* requests must include X-Client-ID.

Quick Check

curl -s http://127.0.0.1:8686/healthz
curl -s -H "X-Client-ID: demo" http://127.0.0.1:8686/v1/agents

Web UI

Open the URL shown in the startup output (e.g., http://127.0.0.1:8686/).