# How to integrate Heyy MCP with Claude Code

```json
{
  "title": "How to integrate Heyy MCP with Claude Code",
  "toolkit": "Heyy",
  "toolkit_slug": "heyy",
  "framework": "Claude Code",
  "framework_slug": "claude-code",
  "url": "https://composio.dev/toolkits/heyy/framework/claude-code",
  "markdown_url": "https://composio.dev/toolkits/heyy/framework/claude-code.md",
  "updated_at": "2026-03-29T06:37:25.481Z"
}
```

## Introduction

Manage your Heyy directly from Claude Code with zero worries about OAuth hassles, API-breaking issues, or reliability and security concerns.
You can do this in two different ways:
- Via [Composio Connect](https://dashboard.composio.dev/login?utm_source=toolkits&utm_medium=framework_template&utm_campaign=claude-code&utm_content=composio_connect&next=%2F~%2Forg%2Fconnect%2Fclients%2Fclaude-code) - Direct and easiest approach
- Via [Composio SDK](https://docs.composio.dev/docs?utm_source=toolkits&utm_medium=framework_template&utm_campaign=claude-code&utm_content=composio_sdk) - Programmatic approach with more control

## Also integrate Heyy with

- [OpenAI Agents SDK](https://composio.dev/toolkits/heyy/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/heyy/framework/claude-agents-sdk)
- [Claude Cowork](https://composio.dev/toolkits/heyy/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/heyy/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/heyy/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/heyy/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/heyy/framework/cli)
- [Google ADK](https://composio.dev/toolkits/heyy/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/heyy/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/heyy/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/heyy/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/heyy/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/heyy/framework/crew-ai)

## TL;DR

- Only one MCP URL to connect multiple apps with Claude Code with zero auth hassles.
- Programmatic tool calling allows LLMs to write its code in a remote workbench to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
- Handling Large tool responses out of LLM context to minimize context rot.
- Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so LLMs aren't overwhelmed by tools you don't need.

## Connect Heyy to Claude Code

### Connecting Heyy to Claude Code using Composio
1. Add the Composio MCP to Claude

```bash
claude mcp add --scope user --transport http composio https://connect.composio.dev/mcp
```

## What is Claude Code?

Claude Code is Anthropic's command line developer tool that lets you use Claude directly inside your terminal. Instead of switching between your editor, browser, and chat, you can stay in your project folder and ask Claude to help you build, debug, refactor, and understand code right where you're working.
Key features include:
- Terminal-Native Experience: Work with Claude directly in your command line without switching contexts
- MCP Support: Built-in support for Model Context Protocol servers to extend Claude's capabilities
- Project Context: Claude understands your project structure and can read, write, and modify files
- Interactive Development: Ask questions, debug code, and get help in real-time while coding
- Multi-Platform: Works on macOS, Linux, WSL, and Windows

## What is the Heyy MCP server, and what's possible with it?

The Heyy MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Heyy account. It provides structured and secure access so your agent can perform Heyy operations on your behalf.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `HEYY_CREATE_ATTRIBUTE` | Create Contact Attribute | Tool to create a new custom attribute for contacts in Heyy. Use when you need to add custom fields to track additional information about contacts, such as customer segments, preferences, or custom identifiers. |
| `HEYY_CREATE_CONTACT` | Create Contact | Tool to create a new contact in Heyy with optional details including first name, last name, email, phone number, labels, and custom attributes. Use when you need to add a new contact to your Heyy account. |
| `HEYY_CREATE_LABEL` | Create Label | Tool to create a new label for categorizing contacts in Heyy. Use when you need to organize contacts into categories or groups. |
| `HEYY_CREATE_WEBHOOK` | Create Webhook | Tool to create a new webhook for receiving event notifications across multiple channels. Use when you need to set up real-time event notifications for messages. |
| `HEYY_DELETE_ATTRIBUTE` | Delete Attribute | Tool to delete an attribute by its unique identifier. Use when you need to remove an attribute from the system. |
| `HEYY_DELETE_LABEL` | Delete Label | Tool to delete a label by its unique identifier. Use when you need to remove a label from the system. |
| `HEYY_DELETE_WEBHOOK` | Delete Webhook | Tool to delete a webhook by its unique identifier. Use when you need to remove a webhook from Heyy. |
| `HEYY_LIST_ATTRIBUTES` | List Attributes | Tool to retrieve all attributes available in the Heyy system. Use when you need to get a list of all attributes with their properties and visibility settings. |
| `HEYY_LIST_AUTOMATIONS` | List Automations | Tool to retrieve automation workflows for a specified channel. Use when you need to get all workflows configured for a channel. |
| `HEYY_LIST_CHANNELS` | List Channels | Tool to retrieve all available channels from the Heyy system. Use when you need to get a complete list of channels with their details including name, type, status, and timestamps. |
| `HEYY_LIST_MESSAGE_TEMPLATES` | List Message Templates | Tool to retrieve all message templates available in the Heyy system. Use when you need to view all existing templates for messaging. |
| `HEYY_LIST_API_WEBHOOKS` | List API Webhooks | Tool to retrieve all API webhooks configured for the account. Use when you need to inspect or manage webhook configurations. |
| `HEYY_UPDATE_WEBHOOK` | Update Webhook | Tool to update a webhook's URL and active status. Use when you need to modify an existing webhook's endpoint or enable/disable it. |

## Supported Triggers

None listed.

## Creating MCP Server - Stand-alone vs Composio SDK

The Heyy MCP server is an implementation of the Model Context Protocol that connects Claude Code (and other AI assistants like Claude and Cursor) directly to your Heyy account. It provides structured and secure access so Claude can perform Heyy operations on your behalf.
With Composio's managed implementation, you don't have to create your own developer app. For production, if you're building an end product, we recommend using your own credentials. The managed server helps you prototype fast and go from 0-1 faster.

## Step-by-step Guide

### 1. Prerequisites

Before starting, make sure you have:
- Claude Pro, Max, or API billing enabled Anthropic account
- Composio API Key
- A Heyy account
- Basic knowledge of Python or TypeScript

### 1. Install Claude Code

To install Claude Code, use one of the following methods based on your operating system:
```bash
# macOS, Linux, WSL
curl -fsSL https://claude.ai/install.sh | bash

# Windows PowerShell
irm https://claude.ai/install.ps1 | iex

# Windows CMD
curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd && del install.cmd
```

### 2. Set up Claude Code

Open a terminal, go to your project folder, and start Claude Code:
- Claude Code will open in your terminal
- Follow the prompts to sign in with your Anthropic account
- Complete the authentication flow
- Once authenticated, you can start using Claude Code
```bash
cd your-project-folder
claude
```

### 3. Set up environment variables

Create a .env file in your project root with the following variables:
- COMPOSIO_API_KEY authenticates with Composio (get it from [Composio dashboard](https://dashboard.composio.dev/login?utm_source=toolkits&utm_medium=framework_template&utm_campaign=claude-code&utm_content=api_key&next=%2F~%2Forg%2Fconnect%2Fclients%2Fclaude-code))
- USER_ID identifies the user for session management (use any unique identifier)
```bash
COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here
```

### 4. Install Composio library

No description provided.
```python
pip install composio-core python-dotenv
```

```typescript
npm install @composio/core dotenv
```

### 5. Generate Composio MCP URL

No description provided.
```python
import os
from composio import Composio
from dotenv import load_dotenv

load_dotenv()

COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
USER_ID = os.getenv("USER_ID")

composio_client = Composio(api_key=COMPOSIO_API_KEY)

composio_session = composio_client.create(
    user_id=USER_ID,
    toolkits=["heyy"],
)

COMPOSIO_MCP_URL = composio_session.mcp.url

print(f"MCP URL: {COMPOSIO_MCP_URL}")
print(f"\nUse this command to add to Claude Code:")
print(f'claude mcp add --transport http heyy-composio "{COMPOSIO_MCP_URL}" --headers "X-API-Key:{COMPOSIO_API_KEY}"')
```

```typescript
import 'dotenv/config';
import { Composio } from '@composio/core';

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 composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['heyy'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http heyy-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);
```

### 6. Run the script and copy the MCP URL

No description provided.
```python
python generate_mcp_url.py
```

```typescript
node --loader ts-node/esm generate_mcp_url.ts
# or if using tsx
tsx generate_mcp_url.ts
```

### 7. Add Heyy MCP to Claude Code

In your terminal, add the MCP server using the command from the previous step. The command format is:
- claude mcp add registers a new MCP server with Claude Code
- --transport http specifies that this is an HTTP-based MCP server
- The server name (heyy-composio) is how you'll reference it
- The URL points to your Composio Tool Router session
- --headers includes your Composio API key for authentication
After running the command, close the current Claude Code session and start a new one for the changes to take effect.
```bash
claude mcp add --transport http heyy-composio "YOUR_MCP_URL_HERE" --headers "X-API-Key:YOUR_COMPOSIO_API_KEY"

# Then restart Claude Code
exit
claude
```

### 8. Verify the installation

Check that your Heyy MCP server is properly configured.
- This command lists all MCP servers registered with Claude Code
- You should see your heyy-composio entry in the list
- This confirms that Claude Code can now access Heyy tools
If everything is wired up, you should see your heyy-composio entry listed:
```bash
claude mcp list
```

### 9. Authenticate Heyy

The first time you try to use Heyy tools, you'll be prompted to authenticate.
- Claude Code will detect that you need to authenticate with Heyy
- It will show you an authentication link
- Open the link in your browser (or copy/paste it)
- Complete the Heyy authorization flow
- Return to the terminal and start using Heyy through Claude Code
Once authenticated, you can ask Claude Code to perform Heyy operations in natural language. For example:
- "Send promotional SMS to VIP customers"
- "Reply to unread Instagram messages"
- "Broadcast order updates on WhatsApp group"

## Complete Code

```python
import os
from composio import Composio
from dotenv import load_dotenv

load_dotenv()

COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
USER_ID = os.getenv("USER_ID")

composio_client = Composio(api_key=COMPOSIO_API_KEY)

composio_session = composio_client.create(
    user_id=USER_ID,
    toolkits=["heyy"],
)

COMPOSIO_MCP_URL = composio_session.mcp.url

print(f"MCP URL: {COMPOSIO_MCP_URL}")
print(f"\nUse this command to add to Claude Code:")
print(f'claude mcp add --transport http heyy-composio "{COMPOSIO_MCP_URL}" --headers "X-API-Key:{COMPOSIO_API_KEY}"')
```

```typescript
import 'dotenv/config';
import { Composio } from '@composio/core';

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 composioClient = new Composio({ apiKey: COMPOSIO_API_KEY });

const composioSession = await composioClient.create(USER_ID, {
  toolkits: ['heyy'],
});

const composioMcpUrl = composioSession?.mcp.url;

console.log(`MCP URL: ${composioMcpUrl}`);
console.log(`\nUse this command to add to Claude Code:`);
console.log(`claude mcp add --transport http heyy-composio "${composioMcpUrl}" --headers "X-API-Key:${COMPOSIO_API_KEY}"`);
```

## Conclusion

You've successfully integrated Heyy with Claude Code using Composio's MCP server. Now you can interact with Heyy directly from your terminal using natural language commands.
Key features of this setup:
- Terminal-native experience without switching contexts
- Natural language commands for Heyy operations
- Secure authentication through Composio's managed MCP
- Tool Router for dynamic tool discovery and execution
Next steps:
- Try asking Claude Code to perform various Heyy operations
- Add more toolkits to your Tool Router session for multi-app workflows
- Integrate this setup into your development workflow for increased productivity
You can extend this by adding more toolkits, implementing custom workflows, or building automation scripts that leverage Claude Code's capabilities.

## How to build Heyy MCP Agent with another framework

- [OpenAI Agents SDK](https://composio.dev/toolkits/heyy/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/heyy/framework/claude-agents-sdk)
- [Claude Cowork](https://composio.dev/toolkits/heyy/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/heyy/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/heyy/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/heyy/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/heyy/framework/cli)
- [Google ADK](https://composio.dev/toolkits/heyy/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/heyy/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/heyy/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/heyy/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/heyy/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/heyy/framework/crew-ai)

## Related Toolkits

- [Gmail](https://composio.dev/toolkits/gmail) - Gmail is Google's email service with powerful spam protection, search, and G Suite integration. It keeps your inbox organized and makes communication fast and reliable.
- [Outlook](https://composio.dev/toolkits/outlook) - Outlook is Microsoft's email and calendaring platform for unified communications and scheduling. It helps users stay organized with powerful email, contacts, and calendar management.
- [Slack](https://composio.dev/toolkits/slack) - Slack is a channel-based messaging platform for teams and organizations. It helps people collaborate in real time, share files, and connect all their tools in one place.
- [Gong](https://composio.dev/toolkits/gong) - Gong is a platform for video meetings, call recording, and team collaboration. It helps teams capture conversations, analyze calls, and turn insights into action.
- [Microsoft teams](https://composio.dev/toolkits/microsoft_teams) - Microsoft Teams is a collaboration platform that combines chat, meetings, and file sharing within Microsoft 365. It keeps distributed teams connected and productive through seamless virtual communication.
- [Slackbot](https://composio.dev/toolkits/slackbot) - Slackbot is a conversational automation tool for Slack that handles reminders, notifications, and automated responses. It boosts team productivity by streamlining onboarding, answering FAQs, and managing timely alerts—all right inside Slack.
- [Reddit](https://composio.dev/toolkits/reddit) - Reddit is a social news platform with thriving user-driven communities (subreddits). It's the go-to place for discussion, content sharing, and viral marketing.
- [Facebook](https://composio.dev/toolkits/facebook) - Facebook is a social media and advertising platform for businesses and creators. It helps you connect, share, and manage content across your public Facebook Pages.
- [Linkedin](https://composio.dev/toolkits/linkedin) - LinkedIn is a professional networking platform for connecting, sharing content, and engaging with business opportunities. It's the go-to place for building your professional brand and unlocking new career connections.
- [2chat](https://composio.dev/toolkits/_2chat) - 2chat is an API platform for WhatsApp and multichannel text messaging. It streamlines chat automation, group management, and real-time messaging for developers.
- [Active campaign](https://composio.dev/toolkits/active_campaign) - ActiveCampaign is a marketing automation and CRM platform for managing email campaigns, sales pipelines, and customer segmentation. It helps businesses engage customers and drive growth through smart automation and targeted outreach.
- [ActiveTrail](https://composio.dev/toolkits/active_trail) - ActiveTrail is a user-friendly email marketing and automation platform. It helps you reach subscribers and automate campaigns with ease.
- [Aeroleads](https://composio.dev/toolkits/aeroleads) - Aeroleads is a B2B lead generation platform for finding business emails and phone numbers. Grow your sales pipeline faster with powerful prospecting tools.
- [Agent mail](https://composio.dev/toolkits/agent_mail) - Agent mail provides AI agents with dedicated email inboxes for sending, receiving, and managing emails. It empowers agents to communicate autonomously with people, services, and other agents—no human intervention needed.
- [Ahrefs](https://composio.dev/toolkits/ahrefs) - Ahrefs is an SEO and marketing platform for site audits, keyword research, and competitor insights. It helps you improve search rankings and drive organic traffic.
- [Amcards](https://composio.dev/toolkits/amcards) - AMCards lets you create and mail personalized greeting cards online. Build stronger customer relationships with easy, automated card campaigns.
- [Autobound](https://composio.dev/toolkits/autobound) - Autobound is an AI-powered sales engagement platform that crafts hyper-personalized outreach and insights. It helps sales teams boost response rates and close more deals through tailored content and recommendations.
- [Basecamp](https://composio.dev/toolkits/basecamp) - Basecamp is a project management and team collaboration tool by 37signals. It helps teams organize tasks, share files, and communicate efficiently in one place.
- [Beamer](https://composio.dev/toolkits/beamer) - Beamer is a news and changelog platform for in-app announcements and feature updates. It helps companies boost user engagement by sharing news where users are most active.
- [Benchmark email](https://composio.dev/toolkits/benchmark_email) - Benchmark Email is a platform for creating, sending, and tracking email campaigns. It's built to help you engage audiences and analyze results—all in one place.

## Frequently Asked Questions

### What are the differences in Tool Router MCP and Heyy MCP?

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

### Can I use Tool Router MCP with Claude Code?

Yes, you can. Claude Code 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 Heyy tools.

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

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

---
[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)