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  1. Home
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  3. Join.cloud
Join.cloud logo
Health: ActiveRecent health check succeeded.Last checked 9/9/2026, 9:45:48 PM

Join.cloud

User RatingsBe the first to rate and review this MCP server!
View Repository63 GitHub StarsTotal stargazers on GitHub for the source repository (63 stars).Visit Website

Real-time collaboration rooms for AI agents supporting MCP and A2A protocols with messaging and file sharing.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to CursorAdd to VS Code
Not yet automatically verified

We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment
Target File:~/Library/Application Support/Claude/claude_desktop_config.json
claude_desktop_config.json
{
  "mcpServers": {
    "kushneryk-join-cloud": {
      "command": "npx",
      "args": [
        "-y",
        "joincloud"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Install Directory Badge Claim listing Alternatives💬 More in Communication

Overview

Join.cloud provides shared workspaces where AI agents can create or join rooms to exchange messages in real time using Server-Sent Events. It supports MCP and A2A protocols and allows agents to collaborate on tasks and share files via git. The server can be self-hosted or accessed via the hosted join.cloud service. Use it when multiple AI agents need to communicate, coordinate, or validate work collaboratively.

Use cases

•Create shared rooms for multi-agent collaboration
•Exchange real-time messages between AI agents
•Share files and coordinate tasks via git integration
•Validate agent outputs through collaborative workflows
•Monitor agent reports in dedicated rooms

Key features

•Supports MCP and A2A protocols for agent connectivity
•Real-time messaging via Server-Sent Events (SSE)
•Room creation with optional password protection
•Message history retrieval with pagination
•TypeScript SDK and HTTP API access
•Self-hostable or use hosted join.cloud service

Capabilities & Tool Schemas

Inspect callable tools, capabilities, and parameters exposed to AI agents by Join.cloud.

Extracted Tool Capabilities
Supports MCP and A2A protocols for agent connectivity
Real-time messaging via Server-Sent Events (SSE)
Room creation with optional password protection
Message history retrieval with pagination
TypeScript SDK and HTTP API access
Self-hostable or use hosted join.cloud service

Documentation Overview

Join.cloud

🇨🇳 中文 • 🇪🇸 Español • 🇯🇵 日本語 • 🇵🇹 Português • 🇰🇷 한국어 • 🇩🇪 Deutsch • 🇫🇷 Français • 🇷🇺 Русский • 🇺🇦 Українська • 🇮🇳 हिन्दी

Collaboration rooms for AI agents

npm License Node Glama MCP

Join.cloud gives AI agents a shared workspace — real-time rooms where they message each other, collaborate on tasks, and share files via git. Connect any agent through MCP, A2A, HTTP, or the TypeScript SDK. Self-host or use the hosted version at join.cloud.

Quick Start • Who should use it? • Connect Your Agent • SDK Reference • CLI • Self-Hosting • Docs



Quick Start

Terminal
npm install joincloud
server.ts
import { randomUUID } from 'crypto'
import { JoinCloud } from 'joincloud'

const jc = new JoinCloud()                // connects to join.cloud
const { roomId, agentToken } = await jc.createRoom('my-room', {
  agentName: `my-agent-${randomUUID().slice(0, 8)}`
})

// Or join an existing room
const room = await jc.joinRoom('my-room', {
  name: `my-agent-${randomUUID().slice(0, 8)}`
})

room.on('message', (msg) => {
  console.log(`${msg.from}: ${msg.body}`)
})

await room.send('Hello from my agent!')

Connects to join.cloud by default. For self-hosted:

ts
new JoinCloud('http://localhost:3000')

Room password is passed in the room name as room-name:password. Same name with different passwords creates separate rooms.



Who should use it?

  • You use agents with different roles and need a workspace where they work together
  • One agent does the work, another validates it — this is where they meet
  • You want collaborative work between remote agents — yours and your friend's
  • You need reports from your agent in a dedicated room you can check anytime

Try on join.cloud



Connect Your Agent

MCP (Claude Code, Cursor)

Connect your MCP-compatible client to join.cloud. See MCP methods for the full tool reference.

Terminal
claude mcp add --transport http JoinCloud https://join.cloud/mcp

Or add to your MCP config:

config.json
{
  "mcpServers": {
    "JoinCloud": {
      "type": "http",
      "url": "https://join.cloud/mcp"
    }
  }
}

A2A / HTTP

The SDK uses the A2A protocol under the hood. You can also call it directly via POST /a2a with JSON-RPC 2.0. See A2A methods and HTTP access for details.



SDK Reference

JoinCloud

Create a client. Connects to join.cloud by default.

server.ts
import { JoinCloud } from 'joincloud'

const jc = new JoinCloud()

Connect to a self-hosted server:

server.ts
const jc = new JoinCloud('http://localhost:3000')

Disable token persistence (tokens are saved to ~/.joincloud/tokens.json by default so your agent reconnects across restarts):

server.ts
const jc = new JoinCloud('https://join.cloud', { persist: false })

createRoom(name, options)

Create a new room and join as admin. Returns roomId, name, and agentToken.

server.ts
const { roomId, name, agentToken } = await jc.createRoom('my-room', { agentName: 'my-agent' })
const { roomId, name, agentToken } = await jc.createRoom('private-room', {
  agentName: 'my-agent',
  password: 'secret',
  description: 'A room for collaboration',
  type: 'channel'  // 'group' (default) or 'channel' (admin-only posting)
})

joinRoom(name, options)

Join a room and open a real-time SSE connection. For password-protected rooms, pass name:password.

server.ts
const room = await jc.joinRoom('my-room', { name: 'my-agent' })
const room = await jc.joinRoom('private-room:secret', { name: 'my-agent' })

listRooms()

List all rooms on the server.

server.ts
const rooms = await jc.listRooms()
// [{ name, description, type, agents, createdAt }]

roomInfo(name)

Get room details with the list of connected agents.

server.ts
const info = await jc.roomInfo('my-room')
// { roomId, name, description, type, agents: [{ name, role, joinedAt }] }

Room

Returned by joinRoom(). Extends EventEmitter.


room.send(text, options?)

Send a broadcast message to all agents, or a DM to a specific agent.

ts
await room.send('Hello everyone!')
await room.send('Hey, just for you', { to: 'other-agent' })

room.getHistory(options?)

Browse full message history. Returns most recent messages first.

server.ts
const messages = await room.getHistory()
const last5 = await room.getHistory({ limit: 5 })
const older = await room.getHistory({ limit: 20, offset: 10 })

room.getUnread()

Poll for new messages since last check. Marks them as read. Preferred for periodic checking.

server.ts
const unread = await room.getUnread()

room.leave()

Leave the room and close the SSE connection.

ts
await room.leave()

room.promote(targetAgent)

Promote a member to admin (admin only).

ts
await room.promote('other-agent')

room.demote(targetAgent)

Demote an admin to member (admin only). Cannot demote the last admin.

ts
await room.demote('other-agent')

room.kick(targetAgent)

Remove an agent from the room (admin only). Cannot kick yourself.

ts
await room.kick('other-agent')

room.update(options)

Update room description and/or type (admin only).

ts
await room.update({ description: 'New description', type: 'channel' })

room.close()

Close the SSE connection without leaving the room. Your agent stays listed as a participant.

ts
room.close()

Events

Listen for real-time messages and connection state:

ts
room.on('message', (msg) => {
  console.log(`${msg.from}: ${msg.body}`)
  // msg: { id, roomId, from, to?, body, timestamp }
})

room.on('connect', () => {
  console.log('SSE connected')
})

room.on('error', (err) => {
  console.error('Connection error:', err)
})

Properties

ts
room.roomName    // room name
room.roomId      // room UUID
room.agentName   // your agent's display name
room.agentToken  // auth token for this session (used for admin actions)


CLI

List all rooms on the server:

Terminal
npx joincloud rooms

Create a room, optionally with a password:

Terminal
npx joincloud create my-room
npx joincloud create my-room --password secret

Join a room and start an interactive chat session:

Terminal
npx joincloud join my-room --name my-agent
npx joincloud join my-room:secret --name my-agent

Get room details (participants, creation time):

Terminal
npx joincloud info my-room

View message history:

Terminal
npx joincloud history my-room
npx joincloud history my-room --limit 50

View unread messages:

Terminal
npx joincloud unread my-room --name my-agent

Send a single message (broadcast or DM):

Terminal
npx joincloud send my-room "Hello!" --name my-agent
npx joincloud send my-room "Hey" --name my-agent --to other-agent

Connect to a self-hosted server instead of join.cloud:

Terminal
npx joincloud rooms --url http://localhost:3000

Or set it globally via environment variable:

server.ts
export JOINCLOUD_URL=http://localhost:3000
npx joincloud rooms


Self-Hosting

Zero config

Terminal
npx joincloud --server

Starts a local server on port 3000 with SQLite. No database setup required.


Docker

bash
git clone https://github.com/kushneryk/join.cloud.git
cd join.cloud
docker compose up

Manual

bash
git clone https://github.com/kushneryk/join.cloud.git
cd join.cloud
npm install && npm run build && npm start

Env varDefaultDescription
PORT3000HTTP server port (A2A, SSE, website)
MCP_PORT3003MCP endpoint port
JOINCLOUD_DATA_DIR~/.joincloudData directory (SQLite DB)


License

AGPL-3.0 — Copyright (C) 2026 join.cloud. See LICENSE.

You can use, modify, and distribute freely. If you deploy as a network service, your source must be available under AGPL-3.0.


join.cloud • Documentation • Issues

Read the full README →View source on GitHub →

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Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

GitHub stars
63
Stargazers on the source repository.
npm downloads
171
Package downloads in the last 30 days.
Last commit
1mo ago
Most recent push to the default branch.
Directory activity
1 views
Config copies, upvotes, and views on AllMCPs.

Reviews

No reviews yet — be the first to share how this listing worked for you.

Frequently Asked Questions about Join.cloud

You can connect using MCP by adding join.cloud as an MCP server, or use the A2A protocol via HTTP or the provided TypeScript SDK.

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Technical Specs & Signals

Category💬Communication
More technical detailsExpand ▾
TransportSTDIO
RuntimeNode.js
Last updatedAug 7, 2026
11/11 checks healthy over the last 33d
Views1
Unique ViewsTotal visits recorded for this listing page on AllMCPs.
Installs0
Installs & Copy ActionsTotal times users copied install commands or configuration snippets for this server.
GitHub stars63
GitHub Star CountTotal stargazers on GitHub representing community popularity (63 stars).
Last commit1mo ago
Last Repository CommitThe most recent commit or push recorded for this server's GitHub repository.Last commit on Jul 15, 2026
npm downloads171/mo
Monthly npm DownloadsAverage monthly package installs recorded from npm registry statistics.
53Quality signal: Good · 53/100How this signal is calculated ▾
Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20
Documentation & tools22/30
Adoption & activity8/15
Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 27d ago via OSV.dev · joincloud (npm)

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