# How to integrate Simplero MCP with Google ADK

```json
{
  "title": "How to integrate Simplero MCP with Google ADK",
  "toolkit": "Simplero",
  "toolkit_slug": "simplero",
  "framework": "Google ADK",
  "framework_slug": "google-adk",
  "url": "https://composio.dev/toolkits/simplero/framework/google-adk",
  "markdown_url": "https://composio.dev/toolkits/simplero/framework/google-adk.md",
  "updated_at": "2026-10-04T14:11:49.100Z"
}
```

## Introduction

This guide walks you through connecting Simplero to Google ADK using the Composio tool router. By the end, you'll have a working Simplero agent that can list all active contacts in simplero, send a broadcast email to your list, enroll a user in a specific course through natural language commands.
This guide will help you understand how to give your Google ADK agent real control over a Simplero account through Composio's Simplero MCP server.
Before we dive in, let's take a quick look at the key ideas and tools involved.

## Also integrate Simplero with

- [Claude Code](https://composio.dev/toolkits/simplero/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/simplero/framework/claude-cowork)
- [OpenAI Agents SDK](https://composio.dev/toolkits/simplero/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/simplero/framework/claude-agents-sdk)
- [Codex](https://composio.dev/toolkits/simplero/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/simplero/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/simplero/framework/hermes-agent)
- [Atomic Agent](https://composio.dev/toolkits/simplero/framework/atomic-agent)
- [LangChain](https://composio.dev/toolkits/simplero/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/simplero/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/simplero/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/simplero/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/simplero/framework/crew-ai)
- [Pydantic AI](https://composio.dev/toolkits/simplero/framework/pydantic-ai)
- [AutoGen](https://composio.dev/toolkits/simplero/framework/autogen)

## TL;DR

Here's what you'll learn:
- Get a Simplero account set up and connected to Composio
- Install the Google ADK and Composio packages
- Create a Composio Tool Router session for Simplero
- Build an agent that connects to Simplero through MCP
- Interact with Simplero using natural language

## What is Google ADK?

Google ADK (Agents Development Kit) is Google's framework for building AI agents powered by Gemini models. It provides tools for creating agents that can use external services through the Model Context Protocol.
Key features include:
- Gemini Integration: Native support for Google's Gemini models
- MCP Toolset: Built-in support for Model Context Protocol tools
- Streamable HTTP: Connect to external services through streamable HTTP
- CLI and Web UI: Run agents via command line or web interface

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

The Simplero MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Simplero account. It provides structured and secure access to your contacts, mailing lists, subscriptions, products, and administrators, so your agent can manage contacts, organize tags, handle list subscriptions, review products, and manage administrators on your behalf.
- Contact management: Have your agent find contacts by email, retrieve their details, create new contacts, update existing records, and change contact names or login emails.
- Contact tagging: Let the agent add or remove tags for contacts by email to keep your audience organized.
- Mailing list subscriptions: Direct your agent to view your mailing lists, check a contact's subscriptions, and subscribe or unsubscribe customers from a chosen list.
- Product discovery: Instruct your agent to list the products available in your Simplero account for quick reference.
- Administrator management: Have your agent review administrators and available roles, create or update administrator access, and remove administrators when needed.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `SIMPLERO_ADD_TAG_TO_CONTACT` | Add Tag to Contact | Tool to add a tag to a contact identified by email address. Use when you need to tag a contact for segmentation or tracking purposes. |
| `SIMPLERO_BULK_SUBSCRIBE_TO_LIST` | Bulk Subscribe to List | Tool to add multiple subscribers to a list in a single asynchronous request (max 1,000 per request). Use when you need to bulk import subscribers into a list. Returns a token to track the operation status. |
| `SIMPLERO_CREATE_OR_UPDATE_ADMINISTRATOR` | Create or Update Administrator | Tool to create a new administratorship or update an existing one with the same email. Use when you need to add a new administrator to Simplero or update their role and permissions. |
| `SIMPLERO_CREATE_OR_UPDATE_CONTACT` | Create or Update Contact | Tool to create a new contact or update an existing contact with the same email. Use when you need to add a new contact to Simplero or update their information. |
| `SIMPLERO_FIND_CONTACT_BY_EMAIL` | Find Contact By Email | Tool to find and retrieve a contact by email address. Use when you need to look up contact details using an email address. |
| `SIMPLERO_FIND_SUBSCRIPTION_BY_EMAIL` | Find Subscription By Email | Tool to find subscriptions for a specific list by email address. Use when you need to search for subscriptions associated with an email in a particular list. |
| `SIMPLERO_GET_ADMINISTRATOR_BY_ID` | Get Administrator By ID | Tool to retrieve a single administratorship by internal ID. Use when you need detailed information about a specific administrator including user, account, role, and permission details. |
| `SIMPLERO_GET_ADMINISTRATORS` | Get Administrators | Tool to retrieve all administratorships for the account. Use when you need to get information about account administrators, their roles, and permissions. |
| `SIMPLERO_GET_ADMIN_ROLES` | Get Admin Roles | Tool to retrieve all available admin roles for the account including custom roles. Use when you need to list all admin roles such as Co-Owner, Admin, Basic admin, Assistant, Support specialist, Affiliate manager, or custom roles saved on Skyrocket plan. |
| `SIMPLERO_GET_ASYNC_REQUEST_STATUS` | Get Async Request Status | Tool to check the status of an asynchronous API request. Use when you need to monitor the progress of a previously initiated async operation using its token. |
| `SIMPLERO_GET_CONTACT_BY_ID` | Get Contact By ID | Tool to retrieve a JSON representation of a contact by internal ID. Use when you need to fetch detailed information about a specific contact. Returns 404 if no contact exists with the provided ID. |
| `SIMPLERO_GET_INVOICES` | Get Invoices | Tool to get invoice information with optional filtering by date and invoice number. Use when you need to retrieve invoices from Simplero. Returns 20 invoices per page ordered by invoice number. |
| `SIMPLERO_GET_ALL_LISTS` | Get All Lists | Tool to retrieve all mailing lists configured in the account. Use when you need to view all available lists for managing subscriptions and email campaigns. |
| `SIMPLERO_GET_PRODUCTS` | Get Products | Tool to list all products in the account. Use when you need to retrieve information about all available products including their pricing. |
| `SIMPLERO_REMOVE_ADMINISTRATOR` | Remove Administrator | Tool to delete an administratorship by ID. Use when you need to remove an administrator relationship from the system. |
| `SIMPLERO_REMOVE_TAG_FROM_CONTACT` | Remove Tag from Contact | Tool to remove a tag from a contact identified by email address. Use when you need to remove a specific tag from a contact's profile. |
| `SIMPLERO_SUBSCRIBE_TO_LIST` | Subscribe to List | Tool to add a new subscriber to a specific mailing list. Use when you need to subscribe a contact with their email address to a list. |
| `SIMPLERO_UNSUBSCRIBE_FROM_LIST` | Unsubscribe From List | Tool to unsubscribe a customer from a specific mailing list. Use when you need to remove a contact from a list by their email address. |
| `SIMPLERO_UPDATE_CONTACT_CREDENTIALS` | Update Contact Credentials | Tool to update a contact's login credentials including email, first name, and last name. Use only with the consent of the contact. At least one identification parameter (email, id, or token) is required. |

## Supported Triggers

None listed.

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

The Simplero MCP server is an implementation of the Model Context Protocol that connects your AI agent to Simplero. It provides structured and secure access so your agent can perform Simplero operations on your behalf through a secure, permission-based interface.
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:
- A Google API key for Gemini models
- A Composio account and API key
- Python 3.9 or later installed
- Basic familiarity with Python

### 1. Getting API Keys for Google and Composio

Google API Key
- Go to [Google AI Studio](https://aistudio.google.com/app/apikey) and create an API key.
- Copy the key and keep it safe. You will put this in GOOGLE_API_KEY.
Composio API Key and User ID
- Log in to the [Composio dashboard](https://dashboard.composio.dev?utm_source=toolkits&utm_medium=framework_docs).
- Go to Settings → API Keys and copy your Composio API key. Use this for COMPOSIO_API_KEY.
- Decide on a stable user identifier to scope sessions, often your email or a user ID. Use this for COMPOSIO_USER_ID.

### 2. Install dependencies

Inside your virtual environment, install the required packages.
What's happening:
- google-adk is Google's Agents Development Kit
- composio connects your agent to Simplero via MCP
- python-dotenv loads environment variables
```bash
pip install google-adk composio python-dotenv
```

### 3. Set up ADK project

Set up a new Google ADK project.
What's happening:
- This creates an agent folder with a root agent file and .env file
```bash
adk create my_agent
```

### 4. Set environment variables

Save all your credentials in the .env file.
What's happening:
- GOOGLE_API_KEY authenticates with Google's Gemini models
- COMPOSIO_API_KEY authenticates with Composio
- COMPOSIO_USER_ID identifies the user for session management
```bash
GOOGLE_API_KEY=your-google-api-key
COMPOSIO_API_KEY=your-composio-api-key
COMPOSIO_USER_ID=your-user-id-or-email
```

### 5. Import modules and validate environment

What's happening:
- os reads environment variables
- Composio is the main Composio SDK client
- GoogleProvider declares that you are using Google ADK as the agent runtime
- Agent is the Google ADK LLM agent class
- McpToolset lets the ADK agent call MCP tools over HTTP
```python
import os
import warnings

from composio import Composio
from dotenv import load_dotenv
from google.adk.agents.llm_agent import Agent
from google.adk.tools.mcp_tool.mcp_session_manager import StreamableHTTPConnectionParams
from google.adk.tools.mcp_tool.mcp_toolset import McpToolset

load_dotenv()

warnings.filterwarnings("ignore", message=".*BaseAuthenticatedTool.*")

GOOGLE_API_KEY = os.getenv("GOOGLE_API_KEY")
COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
COMPOSIO_USER_ID = os.getenv("COMPOSIO_USER_ID")

if not GOOGLE_API_KEY:
    raise ValueError("GOOGLE_API_KEY is not set in the environment.")
if not COMPOSIO_API_KEY:
    raise ValueError("COMPOSIO_API_KEY is not set in the environment.")
if not COMPOSIO_USER_ID:
    raise ValueError("COMPOSIO_USER_ID is not set in the environment.")
```

### 6. Create Composio client and Tool Router session

What's happening:
- Authenticates to Composio with your API key
- Declares Google ADK as the provider
- Spins up a short-lived MCP endpoint for your user and selected toolkit
- Stores the MCP HTTP URL for the ADK MCP integration
```python
composio_client = Composio(api_key=COMPOSIO_API_KEY)

composio_session = composio_client.create(
    user_id=COMPOSIO_USER_ID,
    toolkits=["simplero"],
)

COMPOSIO_MCP_URL = composio_session.mcp.url,
print(f"Composio MCP URL: {COMPOSIO_MCP_URL}")
```

### 7. Set up the McpToolset and create the Agent

What's happening:
- Connects the ADK agent to the Composio MCP endpoint through McpToolset
- Uses Gemini as the model powering the agent
- Lists exact tool names in instruction to reduce misnamed tool calls
```python
composio_toolset = McpToolset(
    connection_params=StreamableHTTPConnectionParams(
        url=COMPOSIO_MCP_URL,
        headers={"x-api-key": COMPOSIO_API_KEY}
    )
)

root_agent = Agent(
    model="gemini-2.5-flash",
    name="composio_agent",
    description="An agent that uses Composio tools to perform actions.",
    instruction=(
        "You are a helpful assistant connected to Composio. "
        "You have the following tools available: "
        "COMPOSIO_SEARCH_TOOLS, COMPOSIO_MULTI_EXECUTE_TOOL, "
        "COMPOSIO_MANAGE_CONNECTIONS, COMPOSIO_REMOTE_BASH_TOOL, COMPOSIO_REMOTE_WORKBENCH. "
        "Use these tools to help users with Simplero operations."
    ),
    tools=[composio_toolset],
)

print("\nAgent setup complete. You can now run this agent directly ;)")
```

### 8. Run the agent

Execute the agent from the project root. The web command opens a web portal where you can chat with the agent.
What's happening:
- adk run runs the agent in CLI mode
- adk web . opens a web UI for interactive testing
```bash
# Run in CLI mode
adk run my_agent

# Or run in web UI mode
adk web
```

## Complete Code

```python
import os
import warnings

from composio import Composio
from composio_google import GoogleProvider
from dotenv import load_dotenv
from google.adk.agents.llm_agent import Agent
from google.adk.tools.mcp_tool.mcp_session_manager import StreamableHTTPConnectionParams
from google.adk.tools.mcp_tool.mcp_toolset import McpToolset

load_dotenv()
warnings.filterwarnings("ignore", message=".*BaseAuthenticatedTool.*")

GOOGLE_API_KEY = os.getenv("GOOGLE_API_KEY")
COMPOSIO_API_KEY = os.getenv("COMPOSIO_API_KEY")
COMPOSIO_USER_ID = os.getenv("COMPOSIO_USER_ID")

if not GOOGLE_API_KEY:
    raise ValueError("GOOGLE_API_KEY is not set in the environment.")
if not COMPOSIO_API_KEY:
    raise ValueError("COMPOSIO_API_KEY is not set in the environment.")
if not COMPOSIO_USER_ID:
    raise ValueError("COMPOSIO_USER_ID is not set in the environment.")

composio_client = Composio(api_key=COMPOSIO_API_KEY, provider=GoogleProvider())

composio_session = composio_client.create(
    user_id=COMPOSIO_USER_ID,
    toolkits=["simplero"],
)

COMPOSIO_MCP_URL = composio_session.mcp.url


composio_toolset = McpToolset(
    connection_params=StreamableHTTPConnectionParams(
        url=COMPOSIO_MCP_URL,
        headers={"x-api-key": COMPOSIO_API_KEY}
    )
)

root_agent = Agent(
    model="gemini-2.5-flash",
    name="composio_agent",
    description="An agent that uses Composio tools to perform actions.",
    instruction=(
        "You are a helpful assistant connected to Composio. "
        "You have the following tools available: "
        "COMPOSIO_SEARCH_TOOLS, COMPOSIO_MULTI_EXECUTE_TOOL, "
        "COMPOSIO_MANAGE_CONNECTIONS, COMPOSIO_REMOTE_BASH_TOOL, COMPOSIO_REMOTE_WORKBENCH. "
        "Use these tools to help users with Simplero operations."
    ),  
    tools=[composio_toolset],
)

print("\nAgent setup complete. You can now run this agent directly ;)")
```

## Conclusion

You've successfully integrated Simplero with the Google ADK through Composio's MCP Tool Router. Your agent can now interact with Simplero using natural language commands.
Key takeaways:
- The Tool Router approach dynamically routes requests to the appropriate Simplero tools
- Environment variables keep your credentials secure and separate from code
- Clear agent instructions reduce tool calling errors
- The ADK web UI provides an interactive interface for testing and development
You can extend this setup by adding more toolkits to the toolkits array in your session configuration.

## How to build Simplero MCP Agent with another framework

- [Claude Code](https://composio.dev/toolkits/simplero/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/simplero/framework/claude-cowork)
- [OpenAI Agents SDK](https://composio.dev/toolkits/simplero/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/simplero/framework/claude-agents-sdk)
- [Codex](https://composio.dev/toolkits/simplero/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/simplero/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/simplero/framework/hermes-agent)
- [Atomic Agent](https://composio.dev/toolkits/simplero/framework/atomic-agent)
- [LangChain](https://composio.dev/toolkits/simplero/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/simplero/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/simplero/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/simplero/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/simplero/framework/crew-ai)
- [Pydantic AI](https://composio.dev/toolkits/simplero/framework/pydantic-ai)
- [AutoGen](https://composio.dev/toolkits/simplero/framework/autogen)

## Related Toolkits

- [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.
- [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.
- [Adobe Marketing Agent MCP](https://composio.dev/toolkits/adobe_marketing_agent_mcp) - Adobe Marketing Agent MCP is Adobe's hosted MCP service that exposes marketing context, preferences, and agent capabilities. Use it to provide agents with campaign, audience, and analytics context via a managed integration.
- [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.
- [AimTell](https://composio.dev/toolkits/aimtell) - AimTell is a web push notification platform for managing websites, subscribers, campaigns, segments, and delivery analytics. Use it to send targeted browser notifications and measure engagement across your web push campaigns.
- [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.
- [AWeber](https://composio.dev/toolkits/aweber) - AWeber is an email marketing platform for creating campaigns, lists, and landing pages. It helps businesses automate email outreach and measure subscriber engagement.
- [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.
- [Beehiiv](https://composio.dev/toolkits/beehiiv) - Beehiiv is a newsletter platform for creating and managing publications and subscribers. It helps grow audience engagement and monetize your mailing list.
- [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.
- [Bigmailer](https://composio.dev/toolkits/bigmailer) - BigMailer is an email marketing platform for managing multiple brands with white-labeling and automation. It helps teams streamline campaigns and simplify integration with Amazon SES.
- [Bitly](https://composio.dev/toolkits/bitly) - Bitly is a link management platform for shortening, customizing, sharing, and tracking links and QR codes. It helps teams create branded links and measure engagement across campaigns.
- [BlueFox Email](https://composio.dev/toolkits/bluefox_email) - BlueFox Email is an email API for managing contacts, subscriber lists, and sending transactional and triggered messages. Use it to reliably send transactional and triggered emails and manage subscribers at scale.
- [Brandfetch](https://composio.dev/toolkits/brandfetch) - Brandfetch is an API that delivers company logos, colors, and visual branding assets. It helps marketers and developers keep brand visuals consistent everywhere.
- [Braze](https://composio.dev/toolkits/braze) - Braze is a customer engagement platform for managing user data, messaging, campaigns, and analytics. Use it to deliver targeted, multi-channel messaging and analyze campaign performance.
- [Brevo](https://composio.dev/toolkits/brevo) - Brevo is an all-in-one email and SMS marketing platform for transactional messaging, automation, and CRM. It helps businesses engage customers and streamline communications through powerful campaign tools.
- [Buffer](https://composio.dev/toolkits/buffer) - Buffer is a social media management platform for planning, creating, scheduling, and publishing posts across connected channels. It helps teams keep content organized and publish consistently without jumping between social apps.

## Frequently Asked Questions

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

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

### Can I use Tool Router MCP with Google ADK?

Yes, you can. Google ADK 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 Simplero tools.

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

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

---
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