workflowstacks
multi-agent

agmsg: Unite Claude, Codex, Gemini & Copilot in One CLI Team

Enable seamless cross‑vendor AI coding collaboration from the command line—ideal for founders building multi‑agent tools. 1.6k+ GitHub stars.

From the repo · “Cross-vendor messaging for CLI AI coding agents — let Claude Code, Codex, Gemini & Copilot talk to each other in one team. Bash + SQLite, no daemon, no framework.”

intermediate⏱ 30 minutes💵 Free
1,558 stars+9★ this week165 forksShellGuide quality 9/10 · reviewed Oct 21Updated 10/21/2026100% free · open source
What it is

Connect different AI tools and agents into one team so they can communicate together.

Real use case example

"A founder, Emily, uses this skill to set up an automation that integrates her Clauded AI assistant, GitHub Copilot, and Notion. She creates a new automation by defining a condition (GitHub Copilot AI assistant suggests a new change) that triggers a Notion task update. This helps Emily stay on top of project updates and collaborate with her team more efficiently."

Best insideClaude CodeCodex CLIGPT (ChatGPT)
When to use it
  • •When working with multiple AI coding tools and needing a unified interface
  • •When integrating different AI agents into a single development workflow
  • •When requiring a framework-agnostic solution for AI agent communication
Ready-to-paste prompt
agmsg send -t copilot -m 'Write a Python function to calculate the factorial of a given number'
Heads up: Ensure that the agents' API keys and configuration settings are correctly specified in the 'agents.json' file to avoid authentication errors
Saves to your device
Use with Claude
New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

⚡ Runs out of the box

A prompt/skill package — nothing to install beyond adding it to your AI tool.

Try it instantly — no install
Claude Code
mkdir -p ~/.claude/skills/agmsg && curl -fsSL https://workflowstacks.com/api/skills/agmsg/claude-skill -o ~/.claude/skills/agmsg/SKILL.md
Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)
claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

How agmsg: Unite Claude, Codex, Gemini & Copilot in One CLI Team works
Codeflow
Free to inspect

Agmsg: Unite Claude, Codex, Gemini & Copilot in One CLI Team is a very large Shell project (~92k lines across 232 code files, plus 27 test files). You install it into your AI tool with one command; there is nothing to run yourself. Last commit this month, MIT license, has a test suite.

Size
Very large codebase
~92k lines · 232 code files · days to read — use, don't read
Setup
Install as a skill / plugin
Add it to Claude Code (or your AI tool) with one command — 1 skill inside. Nothing to run yourself.
Runs on
Inside your AI tool
Helper scripts use Node.js
Shell 75%JavaScript 12%TypeScript 7%Rust 3%Python 3%
Where to start reading
  1. 1
    README.md
    Start here — what it does and how to install it
  2. 2
    SKILL.md
    The instructions the AI actually follows
  3. 3
    bin/agmsg.js
    Where the program starts running
  4. 4
    app/README.md
    Inside app/ — the main logic begins here
What's in each folder
app/Core code — the actual logic80 files
site/Frontend / UI43 files
server/Backend / API28 files
plugins/Sub-packages / plugins2 files
bin/Command-line entry points1 files
docs/Documentation105 files
scripts/Helper scripts214 files
.claude-plugin/Plugin manifest — what gets installed2 files
READMEHas testsDocumentedCI checksMIT licenseUpdated this month
Quick Actions
Details
Creator
fujibee
Language
Shell
Category
multi-agent
Published
4/2/2026

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Featured on WorkflowStacks
[![Featured on WorkflowStacks](https://workflowstacks.com/api/badge/agmsg.svg)](https://workflowstacks.com/skills/agmsg?utm_source=github&utm_medium=badge)
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MCP config

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Let Claude read and write files in folders you choose.

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