How to integrate Hex MCP with Claude Agent SDK

This guide walks you through connecting Hex to the Claude Agent SDK using the Composio tool router. By the end, you'll have a working Hex agent that can list recent hex analytics projects, run weekly revenue hex project, check latest hex project status through natural language commands. This guide will help you understand how to give your Claude Agent SDK agent real control over a Hex account through Composio's Hex MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved.

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Hex is a collaborative data workspace for SQL, Python, and R notebooks. It helps teams build analytics, data apps, and data science workflows together.

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Introduction

This guide walks you through connecting Hex to the Claude Agent SDK using the Composio tool router. By the end, you'll have a working Hex agent that can list recent hex analytics projects, run weekly revenue hex project, check latest hex project status through natural language commands.

This guide will help you understand how to give your Claude Agent SDK agent real control over a Hex account through Composio's Hex 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 Hex
  • Configure an AI agent that can use Hex as a tool
  • Run a live chat session where you can ask the agent to perform Hex 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 Hex MCP server, and what's possible with it?

The Hex MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Hex account. It provides structured and secure access to your projects, notebook cells, runs, collections, guides, users, and groups, so your agent can manage projects, edit notebook cells, run analyses, organize workspace content, and administer access on your behalf.

  • Project discovery and review: Have your agent list viewable Hex projects and retrieve project details for quick workspace research.
  • Notebook cell management: Direct your agent to list, create, update, or delete cells in the draft version of a Hex project.
  • Project runs and monitoring: Let the agent run the latest published version of a project, review its recent runs, and check a specific run's status.
  • Workspace organization: Instruct your agent to list or create collections and create, update, or delete guide drafts.
  • User and group administration: Have your agent list workspace users and groups, edit group names or membership, delete groups, and deactivate users.

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 Hex 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 Hex 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 Hex
  const session = await composio.create(USER_ID, {
    toolkits: ['hex'],
  });
  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 Hex
  • 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 Hex 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 Hex
  • 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 Hex 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: ['hex']
  });
  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 Hex 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 Hex 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

Supported Tools

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

Cancel Run

Tool to cancel a project run that is in progress.

Create Cell

Tool to create a new cell in the draft version of a Hex project.

Create Collection

Tool to create a new collection in the Hex workspace.

Create Group

Tool to create a new group in the Hex workspace.

Deactivate User

Deactivates a user in the Hex workspace.

Delete Cell

Permanently delete a cell from the draft version of a project.

Delete Group

Deletes a group from the Hex workspace.

Delete Guide Draft

Deletes a guide draft by ID from Hex.

Edit Collection

Tool to edit a collection's name, description, and sharing settings in Hex.

Edit Group

Tool to edit a group's name and/or members in Hex.

Edit Project Sharing Collections

Tool to add a project to collections or remove it from collections.

Edit Project Sharing Groups

Tool to edit project sharing settings for groups in Hex.

Edit Project Sharing Settings

Tool to edit project sharing settings for workspace members and public web access.

Edit Project Sharing Users

Tool to edit project sharing settings for individual users in Hex.

Get Cell

Tool to get a single cell by ID from the draft version of a Hex project.

Get collection

Tool to get information about a specific collection in Hex.

Get Group

Tool to retrieve information about a specific Hex group.

Get Project

Tool to get metadata about a single Hex project.

Get Project Runs

Tool to retrieve the status of API-triggered runs for a specific Hex project.

Get Run Chart Image

Tool to retrieve a rendered chart image from a Hex project run.

Get Run Status

Tool to retrieve the status of a specific Hex project run.

List Cells

Tool to list all cells from the draft version of a Hex project.

List Collections

Tool to retrieve all collections in the workspace with pagination support.

List Data Connections

Tool to list all data connections in the Hex workspace with pagination support.

List groups

Tool to list all groups in the Hex workspace with pagination support.

List Hex Projects

Tool to list all viewable Hex projects with pagination and filtering support.

List Users

Tool to list all users in the Hex workspace with pagination support.

Publish Guide Drafts

Tool to publish all currently drafted guides or specific guides by ID.

Run Project

Tool to trigger a run of the latest published version of a Hex project.

Update Cell

Tool to update a cell's source code and/or data connection in Hex.

Update Project Status

Tool to add or remove a status (including endorsements) from a Hex project.

Upsert Guide Draft

Tool to update or create guide drafts by filePath.

FRAMEWORKS

How to build Hex MCP Agent with another framework

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OpenAI Agents SDK

Use Hex MCP with OpenAI Agents SDK

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Claude Code

Use Hex MCP with Claude Code

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Claude Cowork

Use Hex MCP with Claude Cowork

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Codex

Use Hex MCP with Codex

OpenClaw logo

OpenClaw

Use Hex MCP with OpenClaw

Hermes logo

Hermes

Use Hex MCP with Hermes

CLI logo

CLI

Use Hex MCP with CLI

Google ADK logo

Google ADK

Use Hex MCP with Google ADK

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LangChain

Use Hex MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Hex MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Hex MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Hex MCP with LlamaIndex

CrewAI logo

CrewAI

Use Hex MCP with CrewAI

FAQ

Frequently asked questions

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

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

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A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it's immensely helped keep new users on the platform.

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