How to integrate Google Sheets MCP with Antigravity

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How to integrate Google Sheets 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 Sheets account to Antigravity IDE via Composio Connect, so it can add a new sheet named 'Q3 Sales', update all rows where status is 'Pending', create a pie chart of expenses by category, and more without ever putting your account credentials at risk.

Also integrate Google Sheets 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 Sheets 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 Sheets account

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

For example, ask it to:

  • "Add a new sheet named 'Q3 Sales'"
  • "Update all rows where status is 'Pending'"
  • "Create a pie chart of expenses by category"

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

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

Supported Tools & Triggers

Tools
Triggers
Add Sheet to Existing SpreadsheetAdds a new sheet to a spreadsheet.
Aggregate Column DataSearches for rows where a specific column matches a value and performs mathematical operations on data from another column.
Append DimensionTool to append new rows or columns to a sheet, increasing its size.
Auto-Resize Rows or ColumnsAuto-fit column widths or row heights for a dimension range using batchUpdate.
Batch Clear Values By Data FilterClears one or more ranges of values from a spreadsheet using data filters.
Batch get spreadsheetRetrieves data from specified cell ranges in a Google Spreadsheet.
Batch Update Values by Data FilterTool to update values in ranges matching data filters.
Clear Basic FilterTool to clear the basic filter from a sheet.
Clear spreadsheet valuesClears cell content (preserving formatting and notes) from a specified A1 notation range in a Google Spreadsheet; the range must correspond to an existing sheet and cells.
Create Chart in Google SheetsCreate a chart in a Google Sheets spreadsheet using the specified data range and chart type.
Create a Google SheetCreates a new Google Spreadsheet in Google Drive.
Create spreadsheet columnCreates a new column in a Google Spreadsheet.
Create spreadsheet rowInserts a new, empty row into a specified sheet of a Google Spreadsheet at a given index, optionally inheriting formatting from the row above.
Delete Chart from Google SheetsDelete an existing chart from a Google Sheets spreadsheet.
Delete Dimension (Rows/Columns)Tool to delete specified rows or columns from a sheet in a Google Spreadsheet.
Delete SheetTool to delete a sheet (worksheet) from a spreadsheet.
Find and Replace in SpreadsheetTool to find and replace text in a Google Spreadsheet.
Format cellApplies text and background cell formatting to a specified range in a Google Sheets worksheet.
Get conditional format rulesList conditional formatting rules for each sheet (or a selected sheet) in a normalized, easy-to-edit form.
Get Data Validation RulesTool to extract data validation rules from a Google Sheets spreadsheet.
Get sheet namesLists all worksheet names from a specified Google Spreadsheet (which must exist), useful for discovering sheets before further operations.
Get Spreadsheet by Data FilterReturns the spreadsheet at the given ID, filtered by the specified data filters.
Get spreadsheet infoRetrieves metadata for a Google Spreadsheet using its ID.
Insert Dimension in Google SheetTool to insert new rows or columns into a sheet at a specified location.
Look up spreadsheet rowFinds the first row in a Google Spreadsheet where a cell's entire content exactly matches the query string, searching within a specified A1 notation range or the first sheet by default.
Mutate conditional format rulesAdd, update, delete, or reorder conditional format rules on a Google Sheet.
Search Developer MetadataTool to search for developer metadata in a spreadsheet.
Search SpreadsheetsSearch for Google Spreadsheets using various filters including name, content, date ranges, and more.
Set Basic FilterTool to set a basic filter on a sheet in a Google Spreadsheet.
Set Data Validation RuleTool to set or clear data validation rules (including dropdowns) on a range in Google Sheets.
Copy Sheet to Another SpreadsheetTool to copy a single sheet from a spreadsheet to another spreadsheet.
Append Values to SpreadsheetTool to append values to a spreadsheet.
Batch Clear Spreadsheet ValuesTool to clear one or more ranges of values from a spreadsheet.
Batch Get Spreadsheet Values by Data FilterTool to return one or more ranges of values from a spreadsheet that match the specified data filters.
Update Chart in Google SheetsUpdate the specification of an existing chart in a Google Sheets spreadsheet.
Update Dimension Properties (Hide/Unhide & Resize)Tool to hide/unhide rows or columns and set row heights or column widths.
Update Sheet PropertiesTool to update properties of a sheet (worksheet) within a Google Spreadsheet, such as its title, index, visibility, tab color, or grid properties.
Update Spreadsheet PropertiesTool to update SPREADSHEET-LEVEL properties such as the spreadsheet's title, locale, time zone, or auto-recalculation settings.
Batch update spreadsheet valuesTool to set values in one or more ranges of a spreadsheet.
Upsert Rows (Smart Update/Insert)Upsert rows - update existing rows by key, append new ones.
Get spreadsheet valuesReturns a range of values from a spreadsheet.
Update spreadsheet valuesTool to set values in a range of a Google Spreadsheet.

Conclusion

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

How to build Google Sheets MCP Agent with another framework

FAQ

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

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

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

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

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