# Emdash — Parallel Multi-Agent Dev Environment

> Open-source agentic development environment (YC W26) that runs multiple AI coding agents in parallel, each in isolated git worktrees. Supports Claude Code, Codex, Gemini CLI, and 20+ agents. 3,600+ stars.

## Install

Save as a script file and run:

## Quick Use

1. Install: `npm install -g emdash` or `brew install emdash`
2. Run: `emdash` in your project directory
3. Create parallel agent sessions:

```bash
# Launch 3 agents working on different tasks simultaneously
emdash run "Fix the login bug" --agent claude-code
emdash run "Add unit tests for auth module" --agent codex
emdash run "Refactor database queries" --agent gemini-cli
```

Each agent gets its own git worktree — no merge conflicts, full isolation.

---

## Intro

Emdash is an open-source Agentic Development Environment backed by Y Combinator (W26) that lets you run multiple AI coding agents in parallel, each isolated in its own git worktree, with 3,600+ GitHub stars. Instead of waiting for one agent to finish before starting another, run Claude Code, Codex, Gemini CLI, and 20+ other agents simultaneously on different tasks. Best for teams and solo developers who want to parallelize their AI-assisted development workflow. Works with: Claude Code, OpenAI Codex, Gemini CLI, Aider, Goose, and 20+ CLI agents. Setup time: under 3 minutes.

---

## Core Features

### Git Worktree Isolation
Each agent session runs in its own git worktree — a lightweight, isolated copy of your repo. Agents can make changes freely without interfering with each other:

```
main/
├── .worktrees/
│   ├── fix-login-bug/     (Claude Code working here)
│   ├── add-auth-tests/    (Codex working here)
│   └── refactor-db/       (Gemini CLI working here)
```

### Multi-Agent Dashboard
Visual dashboard showing all running agents, their progress, diffs, and status. Review and merge changes from any agent with one click.

### Diff Review Across Agents
Compare changes from different agents side-by-side. Choose the best implementation or merge parts from multiple agents.

### Task Management Integration
Connect to Linear, Jira, or GitHub Issues. Assign tickets directly to agents:

```bash
emdash assign LINEAR-123 --agent claude-code
emdash assign JIRA-456 --agent codex
```

### Kanban View
Visual board showing tasks assigned to agents, in-progress work, and completed items ready for review.

### Key Stats
- 3,600+ GitHub stars
- Y Combinator W26 backed
- 20+ supported CLI agents
- Git worktree isolation (zero conflicts)
- Linear, Jira, GitHub Issues integration

### FAQ

**Q: What is Emdash?**
A: Emdash is an open-source development environment that runs multiple AI coding agents in parallel, each isolated in its own git worktree, so they can work on different tasks simultaneously without conflicts.

**Q: Is Emdash free?**
A: Yes, fully open-source under MIT license.

**Q: Which AI agents does Emdash support?**
A: Claude Code, OpenAI Codex, Gemini CLI, Aider, Goose, and 20+ other CLI-based coding agents.

---

## Source & Thanks

> Created by [General Action](https://github.com/generalaction). Licensed under MIT.
>
> [emdash](https://github.com/generalaction/emdash) — ⭐ 3,600+

Thanks to the Emdash team and Y Combinator for pushing parallel agent development forward.

---

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## 快速使用

1. 安装: `npm install -g emdash`
2. 运行: `emdash`
3. 创建并行 Agent 会话:

```bash
emdash run "修复登录 bug" --agent claude-code
emdash run "添加认证模块单测" --agent codex
emdash run "重构数据库查询" --agent gemini-cli
```

每个 Agent 在独立的 git worktree 中运行，互不干扰。

---

## 简介

Emdash 是一个由 Y Combinator (W26) 支持的开源 Agent 开发环境，GitHub 3,600+ stars。它让你同时运行多个 AI 编码 Agent，每个都在独立的 git worktree 中隔离工作。支持 Claude Code、Codex、Gemini CLI 等 20+ 个 Agent。适合想并行化 AI 辅助开发工作流的团队和个人开发者。

---

## 来源与感谢

> Created by [General Action](https://github.com/generalaction). Licensed under MIT.
>
> [emdash](https://github.com/generalaction/emdash) — ⭐ 3,600+

---
Source: https://tokrepo.com/en/workflows/682ff21b-789a-40e1-adc6-ba6197ae5fe6
Author: Agent Toolkit