How to connect Plasmic to Claude Cowork

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks. This guide walks you through the easiest and most secure way to connect your Plasmic account to Cowork via Composio Connect, enabling it to generate global context config for React app, update authentication provider in Plasmic project, add analytics context to Plasmic loader setup, and more such actions on your behalf without compromising your account security.

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Plasmic is a visual builder for the web that lets teams create and manage web pages and components without code. It's perfect for quickly iterating and launching beautiful sites without waiting on developers.

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Introduction

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks.

This guide walks you through the easiest and most secure way to connect your Plasmic account to Cowork via Composio Connect, enabling it to generate global context config for React app, update authentication provider in Plasmic project, add analytics context to Plasmic loader setup, and more such actions on your behalf without compromising your account security.

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Connecting Plasmic to Claude Cowork

1. Open Customize

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

2. Add the Composio MCP server

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

3. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Cowork

4. Connect your Plasmic account

Back in Cowork, ask the agent to connect to Plasmic or give it any Plasmic-related task.

For example, ask Cowork to:

  • "Generate global context config for React app"
  • "Update authentication provider in Plasmic project"
  • "Add analytics context to Plasmic loader setup"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Cowork, and your Plasmic account is ready to use.

What is Claude Cowork?

Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools.

With Composio Connect, Cowork can securely access apps like Plasmic through MCP without you sharing account credentials directly with the agent.

What is the Plasmic MCP server, and what's possible with it?

The Plasmic MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Plasmic account. It provides structured and secure access to your Plasmic environment, so your agent can generate global configuration snippets, automate design system setup, and streamline your web project workflows on your behalf.

  • Generate global context configuration: Instantly create the configuration snippets needed for your Plasmic loader, saving time and reducing manual errors.
  • Automate design system integration: Let your agent set up and update global contexts for your React providers, ensuring consistent theming and behavior across your app.
  • Simplify onboarding for new projects: Quickly bootstrap new Plasmic projects with pre-configured global settings, making it easy for teams to get started.
  • Maintain and update component contexts: Effortlessly refresh or change global context settings as your design system evolves, keeping your web components in sync.
TOOLS

Supported Tools

Every Plasmic action and event your agent gets out of the box.

Plasmic Global Actions Provider

Tool to generate the globalContexts configuration snippet for Plasmic loader.

FAQ

Frequently asked questions

With a standalone Plasmic MCP server, the agents and LLMs can only access a fixed set of Plasmic tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Plasmic and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Plasmic tools.

Yes, absolutely. You can configure which Plasmic scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Plasmic data and credentials are handled as safely as possible.

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