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How to integrate Lucid MCP with Atomic Agent

Connect Atomic Agent 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

Introduction

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Lucid.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Lucid account. See the Atomic Agent documentation for installation instructions.

Also integrate Lucid MCP with

ChatGPTClaude CoworkHermes

How Atomic Agent connects to Lucid

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect Lucid to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
  3. Ask Atomic Agent to do something in Lucid. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Lucid account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY

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

The Lucid MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Lucid account. It provides structured and secure access so your agent can perform Lucid operations on your behalf.

Use Lucid from Atomic Agent

With your account connected, ask Atomic Agent to work with Lucid in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

Troubleshooting

Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See Composio pricing for the current limits that apply to your connection.

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.

FRAMEWORKS

How to build Lucid MCP Agent with another framework

ChatGPT logo

ChatGPT

Use Lucid MCP with ChatGPT

Claude Cowork logo

Claude Cowork

Use Lucid MCP with Claude Cowork

Hermes logo

Hermes

Use Lucid MCP with Hermes

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. Atomic Agent 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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