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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.

Ngent acts as a bridge between ACP-compatible agents (like Codex, Kimi CLI, OpenCode, etc.) and web clients:

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

1. ACP Protocol: Agents like Codex, Kimi CLI, OpenCode, etc. 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

• 🔌 Multi-Agent Support: Works with any ACP-compatible agent (Codex, Kimi CLI, OpenCode, etc.)
• 🌐 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 with support for multiple languages
• 🔒 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
• 🌿 Git Branch Controls: View per-thread branch information and switch local branches directly from the built-in Web UI
• 🧾 Git Diff Inspector: Show session-scoped working tree diff summaries, list tracked and untracked files, and open per-file previews

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

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"

Custom data directory:

ngent --data-path /path/to/ngent-data

Show all options:

ngent --help

Default paths:

• Data directory: $HOME/.ngent/
• Database: $HOME/.ngent/ngent.db
• Attachments: $HOME/.ngent/attachments/<category>/

Notes:

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

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

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