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Composio (connect-apps)

Plugin : A set of capabilities installed into an AI application or a host · requires claude-code

Gives the agent actions across 1,000+ applications (Gmail, Slack, Notion, GitHub…) via centralized authentication.

The fastest shortcut to connect an agent to the real world; each OAuth connection is an access point to monitor.

Official site GitHub · 30,738 ★

Overall score

7.5 /10

Security: one caveat, see the card

Utility

7.0

Reliability

10.0

Security

One caveat

Ease

5 min · Comfortable

Security reflects where data goes, requested permissions and incidents on record at the verification date. It is not a guarantee of zero risk: check the deployment mode and the connections you enable.

What it does, concretely

Connecting an AI agent to real applications requires managing dozens of OAuth flows, access tokens, and different permissions for each service. Composio centralizes all of this authentication infrastructure and exposes more than 1,500 ready-to-use integrations, without the developer having to write a single authorization flow.

In practice, the agent receives a user session containing available tools, connections to accounts (Gmail, Slack, GitHub, Notion, Linear, Sentry, etc.) and an isolated sandbox environment for running code. Tool calls are made on demand, which avoids loading hundreds of definitions into the model's context all at once.

Composio is aimed at developers building AI agents with Claude Code, Cursor, Codex, or any MCP client, who want to move quickly from prototype to an agent capable of acting within production applications. The SDK is available in TypeScript and Python, with adapters for OpenAI, Anthropic, LangChain, LlamaIndex, CrewAI, and others.

This is not a tool for non-technical users: you need to write code to create a session, configure tools, and launch an agent. People looking for a no-code interface to automate their applications will find better options elsewhere.

What it offers

·Access to more than 1,500 app integrations (Gmail, Slack, GitHub, Notion, Linear, Sentry, etc.) through centralized authentication.
·Full OAuth management for every connector: on-demand triggering, token refresh, and lifecycle management included.
·Contextual user sessions: the agent retains sandbox state, files, and progress across multiple turns.
·Isolated sandbox environment for running multi-step workflows as code, with results stored on a remote browsable filesystem.
·Hosted MCP endpoint per session, compatible with Claude Code, Cursor, and any MCP client.
·Adapters for major agent frameworks: OpenAI Agents, Claude Agent SDK, LangChain, LlamaIndex, CrewAI, Vercel AI SDK, Google GenAI, and others.
·Granular access controls, SSO, and audit logs for organization-wide deployments. (paid)

Our tips

Store the session_id returned by composio.create() and reuse it with composio.use() so the agent picks up the exact context from one conversation to the next, without starting from scratch.
Use session.tools() without parameters to enable on-demand tool discovery: the agent only loads the definitions it needs, preserving the model's context window.
Pass mcp: true to composio.create() to get a hosted MCP URL you can point directly from Claude Code, Cursor, or any MCP client, without installing an SDK.
Use the CLI (composio search, composio execute, composio link) to test an action or connect an account before integrating it into your agent code.
Restrict toolkits and connected accounts at the session level to limit the agent's action surface to only what it actually needs.

Watch out

OAuth tokens for your accounts are stored at Composio: the agent acts on your behalf across every connected application, making each authorized connection sensitive in the event of a breach.
The free action quota is limited; beyond it, a paid plan is required, which can be surprising if an agent runs in a loop or automatically executes a large number of tool calls.

In practice

Price: Freemium
Commercial use: Commercial use: yes
Available on: claude-code, cursor, codex
Host: claude-code
Licence: Apache-2.0
FR interface: No

Security and data

Rating: Security: one caveat, see the card
Your data: Data with third parties
Maintenance: Active
Last release: 22 October 2026

Links and repository checked on 25 October 2026 · added on 1 June 2024

How to install Composio (connect-apps)

1. Install the Composio CLI: curl -fsSL https://composio.dev/install | sh 2. Open a new terminal, then log in: composio login 3. Use composio link to connect an app account (Gmail, Slack, GitHub…) and review the requested permissions before accepting. 4. Install the SDK in your project: npm install @composio/core (TypeScript) or pip install composio (Python). 5. Create a session in your code, retrieve the tools, and pass them to your agent. 6. Security note: each connected account gives the agent the ability to act on your behalf; only connect the applications you strictly need.

curl -fsSL https://composio.dev/install | sh

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