How Developers Integrate Composio into AI Agents

Updated

Composio gives developers three integration paths: an SDK for custom agents, a CLI for coding agents, and an MCP Gateway for hosted tool access. Which one you pick depends on whether you're building your own agent loop, extending a coding assistant, or connecting existing MCP clients. All three share the same underlying infrastructure — tool execution, delegated auth, and sandboxed environments across 1,500+ apps.

The three integration surfaces

Path Best for What you provide What Composio handles
SDK Custom agents and apps you're building Your agent logic and LLM calls Tool execution, auth infrastructure
CLI Coding agents (Claude, Codex, Cursor, etc.) One command Adds tools and auth to the agent
MCP Gateway Existing MCP clients and multiple agents An MCP endpoint connection One managed endpoint for all tools

The distinction matters because each path assumes a different amount of control. If you own the agent loop, the SDK fits. If you're working inside a coding harness, the CLI is the shortest route. If you already speak MCP, the Gateway avoids per-tool wiring.

Integrating via the SDK

The SDK is the path for developers shipping their own agents. Composio describes it as "SDKs, tool execution, and auth infrastructure to ship agents" — meaning you write the agent, and Composio supplies the tool layer.

The general shape of an SDK integration:

  1. Choose your tools. Composio exposes 1,500+ apps. You select which ones your agent can call rather than exposing everything.
  2. Handle auth through Composio's delegated auth. Instead of storing per-user credentials yourself, the platform manages secure delegated auth. This is the part that usually consumes the most engineering time in a hand-rolled integration.
  3. Execute tools from your agent loop. When your agent decides to act, the call routes through Composio's execution layer. Composio states it handles "just-in-time tool calls" and "parallel execution," so multiple tool calls can run concurrently rather than serially.
  4. Run in sandboxed environments. Composio's sandboxing means tool execution is isolated — relevant when agents touch external systems.

The expected result: your agent can act on external apps without you building and maintaining auth flows, retry logic, or per-app API clients.

Common sticking point: deciding scope. Exposing all 1,500+ tools to an agent creates a selection problem for the model. Narrowing to the apps a workflow actually needs is the practical move.

Integrating via the CLI

For coding agents, Composio's CLI is described as "one command to add tools and auth to your coding agent." The supported agent environments listed on the site include Claude, Codex, OpenClaw, Cursor, and Hermes.

The workflow:

  1. Run the CLI command in your coding agent's environment.
  2. Composio adds the tool connections and auth handling.
  3. Your coding agent can then call those tools as part of its normal operation.

This path assumes you're not building the agent — you're extending one that already exists. The trade-off is less control over execution details in exchange for setup measured in a single command.

Integrating via the MCP Gateway

The MCP Gateway is "one managed MCP endpoint for all your tools and agents." If your setup already uses MCP, this replaces managing separate endpoints per tool.

Use this when:

  • You have multiple agents that need the same tool set.
  • You want a single endpoint rather than per-tool configuration.
  • Your clients are MCP-compatible.

The Gateway is the least code-intensive path but also the least customizable — you're connecting to a managed endpoint rather than embedding execution in your own application.

What all three paths share

Regardless of surface, the same infrastructure sits underneath:

  • Delegated auth — secure auth handled by the platform rather than your code.
  • Sandboxed execution — tool calls run in isolated environments.
  • Parallel execution — multiple tool calls can run at once.
  • Scale — Composio states it helps AI take action "100M+ times a week," which is the load figure it publishes for its infrastructure.

Choosing between them

  • Building a product with its own agent loop? Use the SDK.
  • Extending Claude, Codex, Cursor, or a similar coding agent? Use the CLI.
  • Running multiple MCP clients against a shared tool set? Use the MCP Gateway.

These aren't mutually exclusive — a team could use the Gateway for internal agents and the SDK for a customer-facing product. The deciding factor is where your agent logic lives, not which path is "better."

For pricing and plan details, Composio points to its pricing page; the site does not publish specific figures in the material available here, so check there before committing to a path.