Composio
Composio powers 1000+ toolkits, tool search, context management, authentication, and a sandboxed workbench to help you build AI agents that turn intent into action.
What is Composio?
Composio is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to composio powers 1000+ toolkits, tool search, context management, authentication, and a sandboxed workbench to help you build ai agents that turn intent into action.
Composio powers 1000+ toolkits, tool search, context management, authentication, and a sandboxed workbench to help you build AI agents that turn intent into action.
This server falls under the Developer Tools category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- Composio powers 1000+ toolkits, tool search, context managem
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx composioConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
How to Set Up and Use Composio
Composio is a developer platform that gives AI agents authenticated access to over 500 business applications — including Gmail, Slack, GitHub, Notion, Salesforce, Jira, and Linear — through a single unified API. Its MCP server exposes all of these integrations as MCP tools, so any MCP-compatible AI client can perform real actions like sending emails, creating tickets, or pushing code without the developer needing to manage OAuth flows for each service individually. Composio handles authentication, context management, and tool routing across all connected apps.
Prerequisites
- A Composio account and API key (COMPOSIO_API_KEY) — sign up at app.composio.dev
- Node.js 18+ or Python 3.10+ depending on your preferred SDK
- An MCP-compatible client such as Claude Desktop, Cursor, VS Code, or Claude Code
- OAuth connections pre-authorized for the apps you want to use (done via the Composio dashboard)
Sign up and get your API key
Create a free account at app.composio.dev. Your COMPOSIO_API_KEY is shown in the dashboard under API Keys.
# Set the key in your environment
export COMPOSIO_API_KEY=your_composio_api_key_hereInstall the Composio CLI
Install the Composio Python package to manage app connections from the command line.
pip install composio-core
# Verify install
composio --versionAuthenticate with your target apps
Use the Composio CLI to connect the apps you want your AI agent to use. This opens a browser for OAuth.
# Connect GitHub
composio add github
# Connect Gmail
composio add gmail
# Connect Slack
composio add slackStart the Composio MCP server
Launch the Composio MCP server which will expose all your connected app integrations as MCP tools.
composio mcp startAdd to your MCP client configuration
Configure your MCP client to connect to the Composio MCP server, passing your API key.
{
"mcpServers": {
"composio": {
"command": "composio",
"args": ["mcp", "start"],
"env": {
"COMPOSIO_API_KEY": "your_composio_api_key_here"
}
}
}
}Verify tools are available
Ask your AI assistant to list the available Composio tools to confirm the connection is working.
Composio Examples
Client configuration
Full claude_desktop_config.json entry for Composio MCP with API key authentication.
{
"mcpServers": {
"composio": {
"command": "composio",
"args": ["mcp", "start"],
"env": {
"COMPOSIO_API_KEY": "your_composio_api_key_here"
}
}
}
}Prompts to try
Prompts that use Composio's cross-app integrations through MCP tool calls.
- "Send an email via Gmail to [email protected] with the subject 'Weekly Update' and a summary of this week's tasks"
- "Create a GitHub issue in myorg/myrepo titled 'API rate limit exceeded in production' and assign it to @lead-dev"
- "Search my Notion workspace for documents about 'Q3 roadmap' and summarize the key items"
- "Post a message to the #engineering Slack channel saying the deployment to production is complete"
- "Create a Jira ticket in the BACKEND project for the authentication bug we just found, with high priority"Troubleshooting Composio
COMPOSIO_API_KEY authentication fails when the MCP server starts
Verify the API key is correct by running 'composio whoami' in your terminal with the key exported. Keys can be regenerated in the Composio dashboard under API Keys. Ensure there are no leading/trailing spaces in the key value.
Tool calls for a specific app return 'not connected' or 'authorization required'
The app integration needs to be connected first via 'composio add <app-name>'. Go to app.composio.dev > Connections to verify the app shows as connected. If the OAuth token has expired, reconnect with 'composio add <app-name> --force'.
The MCP server starts but no tools appear in the AI client
Run 'composio tools' to list all available tools and confirm they are loaded. Check that the MCP server process is running and the client is connecting to it. Some MCP clients require a restart after adding a new server entry to the config file.
Frequently Asked Questions about Composio
What is Composio?
Composio is a Model Context Protocol (MCP) server that composio powers 1000+ toolkits, tool search, context management, authentication, and a sandboxed workbench to help you build ai agents that turn intent into action. It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Composio?
Follow the installation instructions on the Composio GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Composio?
Composio works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Composio free to use?
Yes, Composio is open source and available under the MIT license. You can use it freely in both personal and commercial projects.
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