How to integrate Notion MCP with Antigravity

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How to integrate Notion MCP with Antigravity

Antigravity IDE is Google's agentic IDE, built on a VS Code-style editor and powered by models like Gemini 3.5 Flash, Gemini 3.1 Pro, Opus 4.6, and more. It treats the AI agent as a first-class teammate, planning, coding, and validating work through an Agent Manager dashboard with deep browser connectivity.

In this guide, I will explain the easiest and most secure way to connect your Notion account to Antigravity IDE via Composio Connect, so it can add meeting notes to project wiki page, create a new task database for Q3, archive completed sprint summary pages, and more without ever putting your account credentials at risk.

Also integrate Notion with

Why use Composio?

Composio provides:

  • Access to 1,000+ managed apps from a single MCP endpoint. This makes it convenient for agents to run cross-app workflows.
  • Programmatic tool calling. Allows LLMs to write code in a remote workbench to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Large tool response handling outside the LLM context. This minimizes context bloat from large tool responses.
  • Dynamic just-in-time access to thousands of tools across hundreds of apps. Composio loads the tools your agent needs, so LLMs are not overwhelmed by tools they do not need.

Connect Notion to Antigravity

Antigravity does not ship with one-click custom MCP install links yet, so configuration goes through the IDE's raw config file. The process takes under a minute.

1. Open the MCP Config

Go to Antigravity Settings, open the Customizations tab, then click Open MCP Config to open mcp_config.json in the editor.

Antigravity Customizations settings with Open MCP Config button

2. Get your API key

Go to the Composio Dashboard and copy your API key.

Composio Dashboard showing where to get the API key

3. Add Composio to mcp_config.json

Paste the following configuration into the file:

bash
{
  "mcpServers": {
    "remote-composio": {
      "serverUrl": "https://connect.composio.dev/mcp",
      "headers": {
        "x-consumer-api-key": "your-composio-api-key"
      }
    }
  }
}

Note: Antigravity uses serverUrl, not url, for remote HTTP-based MCP servers. This differs from the url key used in Cursor and VS Code configs.

Save the file and click refresh in the Installed MCP Servers section.

Antigravity showing Composio tools after MCP setup

Connect your Notion account

Back in the Antigravity agent panel, ask the agent to connect to Notion or give it any Notion-related task.

For example, ask it to:

  • "Add meeting notes to project wiki page"
  • "Create a new task database for Q3"
  • "Archive completed sprint summary pages"

It will prompt you to authenticate and authorize access to Notion.

That is it. Composio tools are now available in Antigravity, and your Notion account is ready to use.

Supported Tools & Triggers

Tools
Triggers
Add multiple content blocks (bulk, user-friendly)Bulk-add content blocks to Notion.
Append code blocks (code, quote, equation)Append code and technical blocks (code, quote, equation) to a Notion page.
Append layout blocks (divider, TOC, columns)Append layout blocks (divider, TOC, breadcrumb, columns) to a Notion page.
Append media blocks (image, video, audio, files)Append media blocks (image, video, audio, file, pdf, embed, bookmark) to a Notion page.
Append table blocksAppend table blocks to a Notion page.
Append task blocks (to-do, toggle, callout)Append task blocks (to-do, toggle, callout) to a Notion page or block.
Append text blocks (paragraphs, headings, lists)Append text blocks (paragraphs, headings, lists) to a Notion page.
Archive Notion PageArchives (moves to trash) or unarchives (restores from trash) a specified Notion page.
Create commentAdds a comment to a Notion page (via `parent_page_id`) OR to an existing discussion thread (via `discussion_id`); cannot create new discussion threads on specific blocks (inline comments).
Create Notion DatabaseCreates a new Notion database as a subpage under a specified parent page with a defined properties schema.
Create Notion file uploadTool to create a Notion FileUpload object and retrieve an upload URL.
Create Notion pageCreates a new page in a Notion workspace under a specified parent page or database.
Delete a blockArchives a Notion block, page, or database using its ID, which sets its 'archived' property to true (like moving to "Trash" in the UI) and allows it to be restored later.
Duplicate pageDuplicates a Notion page, including all its content, properties, and nested blocks, under a specified parent page or workspace.
Fetch All Notion Block ContentsTool to fetch all child blocks for a given Notion block.
Fetch Notion Block ChildrenRetrieves a paginated list of direct, first-level child block objects along with contents for a given parent Notion block or page ID; use block IDs from the response for subsequent calls to access deeply nested content.
Fetch Notion block metadataFetches metadata for a Notion block (including pages, which are special blocks) using its UUID.
Fetch commentsFetches unresolved comments for a specified Notion block or page ID.
Fetch Notion DataFetches Notion items (pages and/or databases) from the Notion workspace, use this to get minimal data about the items in the workspace with a query or list all items in the workspace with minimal data
Fetch DatabaseFetches a Notion database's structural metadata (properties, title, etc.
Fetch database rowRetrieves a Notion database row's properties and metadata; use fetch_block_contents for page content blocks.
Get about userRetrieves detailed information about a specific Notion user, such as their name, avatar, and email, based on their unique user ID.
Get page markdownRetrieve a Notion page's full content rendered as Notion-flavored Markdown in a single API call.
Get page propertyCall this to get a specific property from a Notion page when you have a valid `page_id` and `property_id`; handles pagination for properties returning multiple items.
Insert row databaseCreates a new page (row) in a specified Notion database.
Insert Row From Natural LanguageCreates a new row (page) in a Notion database from a natural language description.
List data source templatesTool to list all templates for a Notion data source.
List Notion file uploadsTool to retrieve file uploads for the current bot integration, sorted by most recent first.
List usersRetrieves a paginated list of users (excluding guests) from the Notion workspace; the number of users returned per page may be less than the requested `page_size`.
Move PageTool to move a Notion page to a new parent (page or database).
Query databaseQueries a Notion database to retrieve pages (rows).
Query database with filterTool to query a Notion database with server-side filtering, sorting, and pagination.
Query data sourceTool to query a Notion data source.
Replace page content (with backup)Safely replaces a page's child blocks by optionally backing up current content, deleting existing children, then appending new children in batches.
Retrieve CommentTool to retrieve a specific comment by its ID.
Retrieve Database PropertyTool to retrieve a specific property object of a Notion database.
Retrieve Notion file uploadTool to retrieve details of a Notion File Upload object by its identifier.
Retrieve pageRetrieve a Notion page's properties/metadata (not block content) by page_id.
Search Notion pages and databasesSearches Notion pages and databases by title.
Send file uploadTool to transmit file contents to Notion for a file upload object.
Update blockUpdates existing Notion block's text content.
Update PageUpdate page properties, icon, cover, or archive status.
Update Database Row (Page)Updates a specific row/page within a Notion database by its page UUID (row_id).
Update database schemaUpdates an existing Notion database's schema including title, description, and/or properties (columns).
Upsert database rowsTool to upsert rows in a Notion database by querying for existing rows and creating or updating them.

Conclusion

You have successfully connected Notion to Antigravity using Composio Connect. Your agent can now use Notion securely without exposing credentials in prompts or local scripts.

How to build Notion MCP Agent with another framework

FAQ

What are the differences in Tool Router MCP and Notion MCP?

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

Can I use Tool Router MCP with Antigravity?

Yes, you can. Antigravity 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 Notion tools.

Can I manage the permissions and scopes for Notion while using Tool Router?

Yes, absolutely. You can configure which Notion 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.

How safe is my data with Composio Tool Router?

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 Notion data and credentials are handled as safely as possible.

Used by agents from

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Letta
glean
HubSpot
Agent.ai
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DataStax
Entelligence
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Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai

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