How to integrate Google Sheets MCP with Claude Agent SDK

This guide walks you through connecting Google Sheets to the Claude Agent SDK using the Composio tool router. By the end, you'll have a working Google Sheets agent that can add a new sheet named 'q3 sales', update all rows where status is 'pending', create a pie chart of expenses by category through natural language commands. This guide will help you understand how to give your Claude Agent SDK agent real control over a Google Sheets account through Composio's Google Sheets MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved.

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Google Sheets is a cloud-based spreadsheet tool for real-time collaboration and data analysis. It lets teams work together from anywhere, updating information instantly.

42 Tools16 Triggers

Introduction

This guide walks you through connecting Google Sheets to the Claude Agent SDK using the Composio tool router. By the end, you'll have a working Google Sheets agent that can add a new sheet named 'q3 sales', update all rows where status is 'pending', create a pie chart of expenses by category through natural language commands.

This guide will help you understand how to give your Claude Agent SDK agent real control over a Google Sheets account through Composio's Google Sheets MCP server.

Before we dive in, let's take a quick look at the key ideas and tools involved.

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TL;DR

Here's what you'll learn:
  • Get and set up your Claude/Anthropic and Composio API keys
  • Install the necessary dependencies
  • Initialize Composio and create a Tool Router session for Google Sheets
  • Configure an AI agent that can use Google Sheets as a tool
  • Run a live chat session where you can ask the agent to perform Google Sheets operations

What is Claude Agent SDK?

The Claude Agent SDK is Anthropic's official framework for building AI agents powered by Claude. It provides a streamlined interface for creating agents with MCP tool support and conversation management.

Key features include:

  • Native MCP Support: Built-in support for Model Context Protocol servers
  • Permission Modes: Control tool execution permissions
  • Streaming Responses: Real-time response streaming for interactive applications
  • Context Manager: Clean async context management for sessions

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

The Google Sheets MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Google Sheets account. It provides structured and secure access to your spreadsheets, so your agent can perform actions like creating new sheets, updating data, generating charts, and automating spreadsheet workflows on your behalf.

  • Spreadsheet creation and management: Instantly create new Google Sheets and add new worksheets (tabs) to existing spreadsheets whenever you need extra space or organization.
  • Bulk data reading and updating: Retrieve specific data ranges, aggregate column data, or update multiple rows and cells at once—perfect for reporting or syncing external data.
  • Automated chart generation: Direct your agent to build charts from selected data, making visualization and analysis faster and easier right inside your sheets.
  • Smart filtering and data cleanup: Have the agent clear filters, remove cell contents, or append rows and columns to keep your sheets tidy and up to date.
  • Dynamic data manipulation: Use advanced features like batch updates with data filters and aggregate operations to transform, filter, or summarize spreadsheet data efficiently.

What is the Composio tool router, and how does it fit here?

What is Composio SDK?

Composio's Composio SDK helps agents find the right tools for a task at runtime. You can plug in multiple toolkits (like Gmail, HubSpot, and GitHub), and the agent will identify the relevant app and action to complete multi-step workflows. This can reduce token usage and improve the reliability of tool calls. Read more here: Getting started with Composio SDK

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Step by step09 STEPS
1

Prerequisites

Before starting, make sure you have:
  • Composio API Key and Claude/Anthropic API Key
  • Primary know-how of Claude Agents SDK
  • A Google Sheets account
  • Some knowledge of Python
2

Getting API Keys for Claude/Anthropic and Composio

Claude/Anthropic API Key
  • Go to the Anthropic Console and create an API key. You'll need credits to use the models.
  • Keep the API key safe.
Composio API Key
  • Log in to the Composio dashboard.
  • Navigate to your API settings and generate a new API key.
  • Store this key securely as you'll need it for authentication.
3

Install dependencies

npm install @anthropic-ai/claude-agent-sdk @composio/core dotenv

Install the Composio SDK and the Claude Agents SDK.

What's happening:

  • @composio/core provides Composio integration for Anthropic
  • @anthropic-ai/claude-agent-sdk is the core agent framework
  • dotenv/config loads environment variables
4

Set up environment variables

bash
COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here
ANTHROPIC_API_KEY=your_anthropic_api_key_here

Create a .env file in your project root.

What's happening:

  • COMPOSIO_API_KEY authenticates with Composio
  • USER_ID identifies the user for session management
  • ANTHROPIC_API_KEY authenticates with Anthropic/Claude
5

Import dependencies

import 'dotenv/config';
import readline from 'node:readline';
import { Composio } from '@composio/core';
import { query, type Options } from "@anthropic-ai/claude-agent-sdk";

dotenv.config();
What's happening:
  • We're importing all necessary libraries including the Claude Agent SDK and Composio
  • The dotenv.config() function loads environment variables from your .env file
  • This setup prepares the foundation for connecting Claude with Google Sheets functionality
6

Create a Composio instance and Tool Router session

async function chat() {
  const { COMPOSIO_API_KEY, USER_ID } = process.env;
  if (!COMPOSIO_API_KEY || !USER_ID) {
    throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
  }

  const composio = new Composio({ apiKey: COMPOSIO_API_KEY });

  // Create Tool Router session for Google Sheets
  const session = await composio.create(USER_ID, {
    toolkits: ['googlesheets'],
  });
  const mcpUrl = session?.mcp.url;
What's happening:
  • The function checks for the required COMPOSIO_API_KEY environment variable
  • We're creating a Composio instance using our API key
  • The create method creates a Tool Router session for Google Sheets
  • The returned url is the MCP server URL that your agent will use
7

Configure Claude Agent with MCP

const options: Options = {
  permissionMode: 'bypassPermissions',
  mcpServers: {
    composio: {
      type: 'http',
      url: mcpUrl,
      headers: { 'x-api-key': COMPOSIO_API_KEY }
    }
  },
  systemPrompt: 'You are a helpful assistant with access to Google Sheets tools via Composio.',
  maxTurns: 10,
};
What's happening:
  • We're configuring the Claude Agent options with the MCP server URL
  • permissionMode: 'bypassPermissions' allows the agent to execute operations without asking for permission each time
  • The system prompt instructs the agent that it has access to Google Sheets
  • maxTurns: 10 limits the conversation length to prevent excessive API usage
8

Create client and start chat loop

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: 'You: '
  });

  console.log('\nChat started. Type "exit" to quit.\n');

  let isProcessing = false;

  async function ask(prompt: string) {
    isProcessing = true;
    rl.pause();

    process.stdout.write('Claude is thinking...');
    const stream = query({ prompt, options });

    let firstChunk = true;
    for await (const msg of stream) {
      const content = (msg as any).message?.content || (msg as any).content;
      if (Array.isArray(content)) {
        for (const block of content) {
          if (block.type === 'text' && block.text) {
            if (firstChunk) {
              process.stdout.write('\r\x1b[K');
              process.stdout.write('Claude: ');
              firstChunk = false;
            }
            process.stdout.write(block.text);
          }
        }
      }
    }
    process.stdout.write('\n\n');

    isProcessing = false;
    rl.resume();
    rl.prompt();
  }

  rl.on('line', async (line) => {
    if (isProcessing) return;

    const input = line.trim();
    if (input === 'exit') {
      rl.close();
      process.exit(0);
    }
    if (input) await ask(input);
    else rl.prompt();
  });

  await ask('What can you help me with?');
}
What's happening:
  • The readline interface is created to handle user input and output
  • The query function is used to send the user's input to the agent
  • The chat loop continues until the user types 'exit' or 'quit'
9

Run the application

try {
  await chat();
} catch (error) {
  console.error(error);
  process.exit(1);
}
What's happening:
  • The chat function is the entry point for the application
  • The try-catch block is used to handle any errors that occur

Complete Code

Here's the complete code to get you started with Google Sheets and Claude Agent SDK:

import 'dotenv/config';
import readline from 'node:readline';
import { Composio } from '@composio/core';
import { query, type Options } from "@anthropic-ai/claude-agent-sdk";

async function chat() {
  const { COMPOSIO_API_KEY, USER_ID } = process.env;
  if (!COMPOSIO_API_KEY || !USER_ID) {
    throw new Error('COMPOSIO_API_KEY and USER_ID required in .env');
  }

  const composio = new Composio({ apiKey: COMPOSIO_API_KEY });
  const session = await composio.create(USER_ID, {
    toolkits: ['googlesheets']
  });
  const mcp_url = session?.mcp.url;

  const options: Options = {
    permissionMode: 'bypassPermissions',
    mcpServers: {
      composio: {
        type: 'http',
        url: mcp_url,
        headers: { 'x-api-key': COMPOSIO_API_KEY }
      }
    },
    systemPrompt: 'You are a helpful assistant with access to Google Sheets tools via Composio.',
    maxTurns: 10,
  };

  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: 'You: '
  });

  console.log('\nChat started. Type "exit" to quit.\n');

  let isProcessing = false;

  async function ask(prompt: string) {
    isProcessing = true;
    rl.pause();

    process.stdout.write('Claude is thinking...');
    const stream = query({ prompt, options });

    let firstChunk = true;
    for await (const msg of stream) {
      const content = (msg as any).message?.content || (msg as any).content;
      if (Array.isArray(content)) {
        for (const block of content) {
          if (block.type === 'text' && block.text) {
            if (firstChunk) {
              process.stdout.write('\r\x1b[K');
              process.stdout.write('Claude: ');
              firstChunk = false;
            }
            process.stdout.write(block.text);
          }
        }
      }
    }
    process.stdout.write('\n\n');

    isProcessing = false;
    rl.resume();
    rl.prompt();
  }

  rl.on('line', async (line) => {
    if (isProcessing) return;

    const input = line.trim();
    if (input === 'exit') {
      rl.close();
      process.exit(0);
    }
    if (input) await ask(input);
    else rl.prompt();
  });

  await ask('What can you help me with?');
}

try {
  await chat();
} catch (error) {
  console.error(error);
  process.exit(1);
}

Conclusion

You've successfully built a Claude Agent SDK agent that can interact with Google Sheets through Composio's Tool Router.

Key features:

  • Native MCP support through Claude's agent framework
  • Streaming responses for real-time interaction
  • Permission bypass for smooth automated workflows
You can extend this by adding more toolkits, implementing custom business logic, or building a web interface around the agent.
TOOLS & TRIGGERS

Supported Tools and Triggers

Every Google Sheets action and event your agent gets out of the box.

Add Sheet to Existing Spreadsheet

Adds a new sheet to a spreadsheet.

Aggregate Column Data

Searches for rows where a specific column matches a value and performs mathematical operations on data from another column.

Append Dimension

Tool to append new rows or columns to a sheet, increasing its size.

Auto-Resize Rows or Columns

Auto-fit column widths or row heights for a dimension range using batchUpdate.

Batch Clear Values By Data Filter

Clears one or more ranges of values from a spreadsheet using data filters.

Batch get spreadsheet

Retrieves data from specified cell ranges in a Google Spreadsheet.

Batch Update Values by Data Filter

Tool to update values in ranges matching data filters.

Clear Basic Filter

Tool to clear the basic filter from a sheet.

Clear spreadsheet values

Clears 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 Sheets

Create a chart in a Google Sheets spreadsheet using the specified data range and chart type.

Create a Google Sheet

Creates a new Google Spreadsheet in Google Drive.

Create spreadsheet column

Creates a new column in a Google Spreadsheet.

Create spreadsheet row

Inserts 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 Sheets

Delete 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 Sheet

Tool to delete a sheet (worksheet) from a spreadsheet.

Find and Replace in Spreadsheet

Tool to find and replace text in a Google Spreadsheet.

Format cell

Applies text and background cell formatting to a specified range in a Google Sheets worksheet.

Get conditional format rules

List conditional formatting rules for each sheet (or a selected sheet) in a normalized, easy-to-edit form.

Get Data Validation Rules

Tool to extract data validation rules from a Google Sheets spreadsheet.

Get sheet names

Lists all worksheet names from a specified Google Spreadsheet (which must exist), useful for discovering sheets before further operations.

Get Spreadsheet by Data Filter

Returns the spreadsheet at the given ID, filtered by the specified data filters.

Get spreadsheet info

Retrieves metadata for a Google Spreadsheet using its ID.

Insert Dimension in Google Sheet

Tool to insert new rows or columns into a sheet at a specified location.

Look up spreadsheet row

Finds 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 rules

Add, update, delete, or reorder conditional format rules on a Google Sheet.

Search Developer Metadata

Tool to search for developer metadata in a spreadsheet.

Search Spreadsheets

Search for Google Spreadsheets using various filters including name, content, date ranges, and more.

Set Basic Filter

Tool to set a basic filter on a sheet in a Google Spreadsheet.

Set Data Validation Rule

Tool to set or clear data validation rules (including dropdowns) on a range in Google Sheets.

Copy Sheet to Another Spreadsheet

Tool to copy a single sheet from a spreadsheet to another spreadsheet.

Append Values to Spreadsheet

Tool to append values to a spreadsheet.

Batch Clear Spreadsheet Values

Tool to clear one or more ranges of values from a spreadsheet.

Batch Get Spreadsheet Values by Data Filter

Tool to return one or more ranges of values from a spreadsheet that match the specified data filters.

Update Chart in Google Sheets

Update 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 Properties

Tool to update properties of a sheet (worksheet) within a Google Spreadsheet, such as its title, index, visibility, tab color, or grid properties.

Update Spreadsheet Properties

Tool to update SPREADSHEET-LEVEL properties such as the spreadsheet's title, locale, time zone, or auto-recalculation settings.

Batch update spreadsheet values

Tool 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 values

Returns a range of values from a spreadsheet.

Update spreadsheet values

Tool to set values in a range of a Google Spreadsheet.

FAQ

Frequently asked questions

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.

Yes, you can. Claude Agent SDK 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.

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.

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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