How to integrate Google Docs MCP with Antigravity

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How to integrate Google Docs 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 Google Docs account to Antigravity IDE via Composio Connect, so it can create a new meeting notes document, copy last week's project summary template, add bullet points to the action items section, and more without ever putting your account credentials at risk.

Also integrate Google Docs 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 Google Docs 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 Google Docs account

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

For example, ask it to:

  • "Create a new meeting notes document"
  • "Copy last week's project summary template"
  • "Add bullet points to the action items section"

It will prompt you to authenticate and authorize access to Google Docs.

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

Supported Tools & Triggers

Tools
Triggers
Copy Google DocumentTool to create a copy of an existing Google Document.
Create a documentCreates a new Google Docs document using the provided title as filename and inserts the initial text at the beginning if non-empty, returning the document's ID and metadata (excluding body content).
Create Document MarkdownCreates a new Google Docs document, optionally initializing it with a title and content provided as Markdown text.
Create FooterTool to create a new footer in a Google Document.
Create FootnoteTool to create a new footnote in a Google Document.
Create HeaderTool to create a new header in a Google Document, optionally with text content.
Create Named RangeTool to create a new named range in a Google Document.
Create Paragraph BulletsTool to add bullets to paragraphs within a specified range in a Google Document.
Delete Content Range in DocumentTool to delete a range of content from a Google Document.
Delete FooterTool to delete a footer from a Google Document.
Delete HeaderDeletes the header from the specified section or the default header if no section is specified.
Delete Named RangeTool to delete a named range from a Google Document.
Delete Paragraph BulletsTool to remove bullets from paragraphs within a specified range in a Google Document.
Delete Table ColumnTool to delete a column from a table in a Google Document.
Delete Table RowTool to delete a row from a table in a Google Document.
Export Google Doc as PDFTool to export a Google Docs file as PDF using the Google Drive API.
Get document by idRetrieves an existing Google Document by its ID; will error if the document is not found.
Get document plain textRetrieve a Google Doc by ID and return a best-effort plain-text rendering.
Insert Inline ImageTool to insert an image from a given URI at a specified location in a Google Document as an inline image.
Insert Page BreakTool to insert a page break into a Google Document.
Insert Table in Google DocTool to insert a table into a Google Document.
Insert Table ColumnTool to insert a new column into a table in a Google Document.
Insert Text into DocumentTool to insert a string of text at a specified location within a Google Document.
Get Charts from SpreadsheetTool to retrieve a list of all charts from a specified Google Sheets spreadsheet.
Replace All Text in DocumentTool to replace all occurrences of a specified text string with another text string throughout a Google Document.
Replace Image in DocumentTool to replace a specific image in a document with a new image from a URI.
Search DocumentsSearch for Google Documents using various filters including name, content, date ranges, and more.
Unmerge Table CellsTool to unmerge previously merged cells in a table.
Update Document MarkdownReplaces the entire content of an existing Google Docs document with new Markdown text; requires edit permissions for the document.
Update Document Section MarkdownTool to insert or replace a section of a Google Docs document with Markdown content.
Update Document StyleTool to update the overall document style, such as page size, margins, and default text direction.
Update existing documentApplies programmatic edits, such as text insertion, deletion, or formatting, to a specified Google Doc using the `batchUpdate` API method.
Update Table Row StyleTool to update the style of a table row in a Google Document.

Conclusion

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

How to build Google Docs MCP Agent with another framework

FAQ

What are the differences in Tool Router MCP and Google Docs MCP?

With a standalone Google Docs MCP server, the agents and LLMs can only access a fixed set of Google Docs tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Google Docs 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 Google Docs tools.

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

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

Used by agents from

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

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