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How to connect Lucid MCP with ChatGPT

Connect ChatGPT to Lucid MCP. Summarize diagram changes from last week, create org chart from team spreadsheet, and more using natural language, with authentication handled for you.

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Lucid MCP is Lucid's platform for creating diagrams, mind maps, org charts, and sequence diagrams. It provides a visual workspace that helps teams collaborate and turn ideas into shareable diagrams.

35 Tools

How to connect Lucid MCP with ChatGPT

ChatGPT can take action across your apps and files, stay with a project for hours, and turn a goal into finished materials like sheets, slides, and docs, not just answers.

In this guide, I will explain the easiest and most secure way to connect your Lucid account to ChatGPT via Composio Connect, so it can search diagrams, retrieve your Lucid documents, summarize diagrams and notes, create new diagrams, and export files through natural language commands without ever putting your account credentials at risk.

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Why use Composio over default connectors?

  • Apps with read and write access. Default connectors mostly can read your data. Composio's Lucid integration lets ChatGPT take actions like creating drafts, sending updates, labeling records, and more.
  • 1,500+ SaaS toolkits out of the box. Composio gives you instant access to a vast catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Connect any of your applications on demand through a single endpoint, rather than juggling a separate server for each app.
  • Smart, context-aware tool loading. Unlike traditional MCP servers that dump every available tool into the LLM context window, Composio searches for and loads only the tools relevant to the task at hand.
  • Cross-app automation. Chain actions across multiple apps in a single run - fetch a thread, summarize it in Notion, and post highlights to Slack without leaving the conversation.

Prerequisites

Note: Composio connects through OAuth. You will be asked to sign in and approve specific permissions. Review the permission screen carefully if you are using a work account.

Step-by-step: Connect Lucid to ChatGPT

1. Install the Composio plugin

Click the button. ChatGPT opens the Composio plugin page. Click Install plugin.

Install in ChatGPT

Composio plugin page in ChatGPT with the Install plugin button

You can also find it inside ChatGPT: go to Settings, open Plugins, search the marketplace for Composio, and click Install plugin.

2. Authenticate

After you install, ChatGPT asks you to authenticate with Composio. Log in and click Allow access to authorize ChatGPT to use your Composio account.

Composio login and Allow access screen for ChatGPT

3. Start using Composio

That is it. Composio tools are now available in ChatGPT. Type @Composio followed by your request, for example @Composio find unread Lucid messages and summarize them, and it will run the actions you authorize. On first use it asks you to authorize Lucid.

Option 2: Add Composio as an MCP server

If you cannot use the plugin marketplace, add Composio as a custom MCP server instead.

1. Open the MCP settings

In ChatGPT, go to Settings and open the Plugins section. Inside the Plugins page, click the MCP tab.

ChatGPT settings showing the Plugins page with the MCP tab selected

2. Add the server

Click Add server. In the Name field enter Composio, for Type select Streamable HTTP, and in the URL field paste the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
ChatGPT Add server dialog with the name Composio, type Streamable HTTP, and the Composio MCP URL

Then click Save. The Composio server now appears in your MCP plugins list.

ChatGPT Plugins page showing the Composio MCP server added to the list

3. Authenticate

Click Authenticate on the Composio entry, log in via Composio, and click Allow access. Composio tools are then available in ChatGPT the same way as with the plugin.

What you can do after connecting Lucid

  • Summarize diagram changes from last week
  • Create org chart from team spreadsheet
  • Export selected diagrams as PNG files

Security + privacy notes (important)

  • Use least-privilege access: Only grant permissions you actually need.
  • Review OAuth permissions before approving: Make sure requested scopes match what you expect Composio and ChatGPT to do.
  • Keep write actions human-reviewed: For actions like sending messages, creating labels, or editing drafts, keep manual confirmation enabled.
  • Be careful with sensitive data: Avoid using this setup with highly sensitive information unless allowed by your personal, company, or client policies.
TOOLS

Supported Tools

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

Fetch

Retrieves the structured content of a specific Lucid document by its ID.

Get mcp resource

Reads a resource from this MCP server by URI.

List document thread comments

List comments on a specific collaboration thread of a Lucid document.

List document threads

List collaboration threads on a Lucid document.

Lucid add block

Add a new block (shape) to a Lucid document.

Lucid add dynamic table

Add a dynamic table to a Lucid document.

Lucid add items to dynamic table

Add existing canvas blocks to a dynamic table.

Lucid add line

Add a new line to a Lucid document, connecting two points or shapes.

Lucid create diagram from specification

Creates a Lucid document using the Standard Import format (.

Lucid create document share link

Creates a new share link for a document with specified permissions.

lucid create embed

Internal tool for MCP Apps extension only.

lucid create embed session token

Internal tool for MCP Apps extension only.

Lucid create erd

Creates a Lucid document containing a data-backed Entity Relationship Diagram (ERD).

Lucid create folder

Create a new folder in the user's Lucid account.

Lucid create mind map

Creates a Lucid document containing a mind map from structured node data.

Lucid create org chart

Creates a Lucidchart document containing an org chart from structured node data.

Lucid create sequence diagram

Creates a Lucid document containing a UML sequence diagram from PlantUML markup.

Lucid delete items

Delete one or more blocks or lines from a Lucid document.

Lucid edit dynamic table metadata

Edit the metadata/settings of an existing dynamic table.

Lucid edit item

Edit an existing block or line in a Lucid document.

Lucid export document as png

Exports a Lucid document page as a PNG image.

Lucid fetch item image

Fetches the source image attached to a specific item in a Lucid document.

Lucid get document metadata

Get metadata for a Lucid document.

Lucid import integration cards

Import records from a third-party integration as linked cards.

Lucid list folder contents

List the documents and subfolders inside a Lucid folder.

Lucid list integrations

List the user's available card integrations and their connection status.

Lucid search document

Locates regions of a Lucid document that contain specific text.

Lucid shape details

Get default size, colors, and advanced/text-area properties for one or more shape classes.

Lucid shape library

Discover shapes/blocks available to INSERT into a Lucid document.

Lucid submit feedback

Submits user feedback about the Lucid MCP server to the product team.

Lucid update document

Update a Lucid document's title, parent folder, or custom tags.

Lucid update folder

Rename a Lucid folder or move it to a different parent.

Post document thread comment

Post a new comment to an existing thread on a Lucid document.

Search

Search the user's Lucid account for documents by title/keyword.

Share document with collaborators

Share a Lucid document with collaborators by granting them access.

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FAQ

Frequently asked questions

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

Yes, you can. ChatGPT 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 Lucid tools.

Yes, absolutely. You can configure which Lucid 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 Lucid data and credentials are handled as safely as possible.

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