How to integrate ReferralRock MCP with Claude Agent SDK

This guide walks you through connecting ReferralRock to the Claude Agent SDK using the Composio tool router. By the end, you'll have a working ReferralRock agent that can list all active referral campaigns, add a new member to referral program, show referral stats for this week through natural language commands. This guide will help you understand how to give your Claude Agent SDK agent real control over a ReferralRock account through Composio's ReferralRock MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved.

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ReferralRock logoReferralRock
Basic

ReferralRock is a referral marketing platform for creating and managing referral programs. It helps businesses drive word-of-mouth growth and increase customer acquisition.

35 Tools

Introduction

This guide walks you through connecting ReferralRock to the Claude Agent SDK using the Composio tool router. By the end, you'll have a working ReferralRock agent that can list all active referral campaigns, add a new member to referral program, show referral stats for this week through natural language commands.

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

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

Also integrate ReferralRock with

OpenAI Agents SDKClaude CodeClaude CoworkCodexOpenClawHermesCLIGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAI

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 ReferralRock
  • Configure an AI agent that can use ReferralRock as a tool
  • Run a live chat session where you can ask the agent to perform ReferralRock 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 ReferralRock MCP server, and what's possible with it?

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

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 ReferralRock 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 ReferralRock 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 ReferralRock
  const session = await composio.create(USER_ID, {
    toolkits: ['referralrock'],
  });
  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 ReferralRock
  • 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 ReferralRock 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 ReferralRock
  • 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 ReferralRock 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: ['referralrock']
  });
  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 ReferralRock 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 ReferralRock 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 ReferralRock action and event your agent gets out of the box.

Remove Email from Unsubscribe List

Tool to remove an email address from the unsubscribe list.

Delete Webhook

Tool to delete a webhook subscription.

Delete Members from Program

Tool to delete members from a referral program.

Delete Referral

Tool to delete one or more referrals from a referral program.

Delete Rewards

Tool to delete rewards from members or referrals in a referral program.

Get Email Unsubscribed Status

Tool to check if an email address is unsubscribed from communications.

Get Webhook History for Event

Tool to retrieve webhook history for a specific event.

List Program Members

Tool to list program members with filtering and pagination.

Get Member Statistics

Tool to retrieve comprehensive statistics for a single member from ReferralRock.

Get Payout

Tool to retrieve payout list by ID.

Get Payout Details by ID

Tool to get payout details by ID.

Get Pending Payouts

Tool to get pending payouts for a member or recipient.

Get Payout Transactions

Tool to get payout transaction history for referral program participants.

Get Single Program

Tool to retrieve a single referral program by name.

List Referral Programs

List all referral programs in ReferralRock.

Get Referrals

Tool to list referrals with filtering and pagination options.

Get Single Referral

Tool to retrieve a single referral by email, ID, or external ID.

Get Reward Rules

Tool to get reward rules for a program.

Get Rewards

Tool to list rewards with optional filtering and pagination.

Remove Email from Unsubscribe List

Tool to remove an email address from the unsubscribe list.

Unsubscribe Email Address

Tool to unsubscribe an email address from the ReferralRock mailing list.

Create Webhook Subscription

Tool to create or update a webhook subscription for event notifications.

Create Invite Feed Entry

Tool to create an invite feed entry for automatic invitations.

Create Invite Feed Entries

Tool to create multiple invite feed entries for automatic invites in ReferralRock.

Generate Member Access Token

Tool to generate pre-authenticated member access URLs for sharing and portal experiences.

Generate Member Access URLs

Tool to generate member access URLs for custom share experience or secure portal embedding.

Add new member to program

Tool to create a new member and add them to a referral program.

Remove Members from Program

Tool to remove members from a referral program.

Create Referral Action

Tool to create a referral action for processing recurring rewards.

Remove Referral

Tool to remove referrals from a referral program.

Create New Referral

Tool to create a new referral in ReferralRock based on a member's referral code.

Update Referral Status

Tool to update referral status in ReferralRock.

Update Referral Details

Tool to update referral details in a referral program.

Issue Reward to Member

Tool to issue a reward to a member in the Referral Rock system.

Remove Rewards

Tool to remove rewards from members or referrals of a referral program.

FRAMEWORKS

How to build ReferralRock MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use ReferralRock MCP with OpenAI Agents SDK

Claude Code logo

Claude Code

Use ReferralRock MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use ReferralRock MCP with Claude Cowork

Codex logo

Codex

Use ReferralRock MCP with Codex

OpenClaw logo

OpenClaw

Use ReferralRock MCP with OpenClaw

Hermes logo

Hermes

Use ReferralRock MCP with Hermes

CLI logo

CLI

Use ReferralRock MCP with CLI

Google ADK logo

Google ADK

Use ReferralRock MCP with Google ADK

LangChain logo

LangChain

Use ReferralRock MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use ReferralRock MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use ReferralRock MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use ReferralRock MCP with LlamaIndex

CrewAI logo

CrewAI

Use ReferralRock MCP with CrewAI

FAQ

Frequently asked questions

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

Yes, absolutely. You can configure which ReferralRock 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 ReferralRock 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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