AgentPlex

Multi-session Claude/Codex/GitHub CLI orchestrator with graph visualization.

Download for Windows  |  Build from source

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Requirements

• Claude CLI installed and authenticated

Quick Start

Download AgentPlex.exe from the latest release and run it. That's it.

macOS / Linux: Pre-built binaries coming soon. For now, build from source.

Installation

If you prefer to build from source instead of using the installer:

git clone https://github.com/AlexPeppas/agentplex.git
cd agentplex
pnpm install
pnpm start

To build a distributable installer:

pnpm make

Global CLI shortcut (optional)

pnpm link --global   # one-time setup
agentplex            # launch from anywhere

To remove: pnpm unlink --global agentplex

Dev Requirements

Building from source requires Node.js 18+, pnpm (npm install -g pnpm), and native build tools for node-pty:

• Windows: Visual Studio Build Tools with "Desktop development with C++"
• macOS: xcode-select --install
• Linux: sudo apt install build-essential python3

Features

• Multi-session management — run multiple Claude/Codex/GH CLI sessions side by side
• Graph canvas — drag, arrange, and connect session nodes on a visual canvas
• HITL notifications — get notified when a CLI session requires human input
• Cross-session messaging — send messages between sessions with optional Haiku-powered summarization
• Sub-agent tracking — visualize spawned sub-agents via JSONL transcript tailing
• Plan & task visualization — see plans and task lists rendered in the graph
• Session resume — resume previous Claude sessions with claude --resume
• Dark / light mode — warm terracotta palette with theme toggle
• Inline rename — double-click any node to rename it

Three concurrent sessions on the graph canvas: Autonomous Driving spawned 3 sub-agents comparing Tesla, Waymo, and Cruise. Fine Tuning is in plan mode working through a structured research plan — it's currently waiting for human input (indicated by the ? badge). Mortgage crawls and looks for the best interest rates. Each node reflects real-time session status at a glance. Hover any session and click the send icon to share context with another session.

Configuration

Cross-session summarization (optional)

To enable AI-powered context summarization when sending messages between sessions, set your Anthropic API key using AGENTPLEX_API_KEY (not ANTHROPIC_API_KEY, which would conflict with Claude CLI's auth).

Set it persistently (recommended):

export AGENTPLEX_API_KEY=sk-ant-...       # macOS/Linux (~/.bashrc or ~/.zshrc)
set AGENTPLEX_API_KEY=sk-ant-...          # Windows (cmd)
$env:AGENTPLEX_API_KEY="sk-ant-..."       # Windows (PowerShell)

Or inline when launching from source:

AGENTPLEX_API_KEY=sk-ant-... pnpm start                          # macOS/Linux
$env:AGENTPLEX_API_KEY="sk-ant-..."; pnpm start                  # Windows (PowerShell)

Without this, cross-session messaging still works — it sends raw context instead of a summary.

Usage

1. Create sessions — click "+ New Session" and pick a working directory
2. Arrange nodes — drag session nodes freely on the canvas
3. Rename — double-click a node label to rename it
4. Send messages — hover a node, click the send icon to share context with another session
5. Resume — use "Claude Resume" from the menu to continue a previous session

Project Structure

agentplex/
├── src/
│   ├── main/                # Electron main process
│   │   ├── main.ts          # App entry point & window management
│   │   ├── session-manager.ts   # PTY session lifecycle
│   │   ├── ipc-handlers.ts      # IPC bridge between main & renderer
│   │   ├── jsonl-session-watcher.ts # JSONL transcript tailing for sub-agent detection
│   │   └── plan-task-detector.ts # Plan & task list parsing
│   ├── preload/
│   │   └── preload.ts       # Context bridge for renderer
│   ├── renderer/
│   │   ├── App.tsx           # Root React component
│   │   ├── store.ts          # Zustand state management
│   │   ├── components/       # UI components
│   │   │   ├── GraphCanvas.tsx   # React Flow canvas
│   │   │   ├── SessionNode.tsx   # Session graph node
│   │   │   ├── SubAgentNode.tsx  # Sub-agent graph node
│   │   │   ├── GroupNode.tsx     # Group container node
│   │   │   ├── SendDialog.tsx    # Cross-session messaging
│   │   │   ├── TerminalPanel.tsx # xterm.js terminal
│   │   │   ├── Toolbar.tsx       # Top toolbar
│   │   │   └── StatusIndicator.tsx
│   │   └── hooks/
│   │       └── useTerminal.ts    # Terminal lifecycle hook
│   └── shared/               # Shared utilities
│       ├── ansi-strip.ts
│       └── ipc-channels.ts
├── styles/
│   └── index.css             # Global styles
├── bin/
│   └── agentplex.js          # CLI entry point
└── package.json

Tech Stack

Layer	Technology
Desktop shell	Electron
UI framework	React
Graph canvas	React Flow
Terminal	xterm.js
State	Zustand
PTY backend	node-pty
Summarization	Anthropic SDK (optional)

Contributing

See CONTRIBUTING.md for guidelines.

License

MIT