Esputnik with Google ADK

How to integrate Esputnik MCP with Google ADK

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Introduction Also integrate Esputnik with TL;DR What is Google ADK What is the Esputnik MCP server Supported Tools & Triggers Creating MCP Server - Stand-alone vs Composio SDK Step-by-step Guide Complete Code Conclusion How to build Esputnik MCP Agent with another framework Explore Other Toolkits FAQ

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Introduction

This guide walks you through connecting Esputnik to Google ADK using the Composio tool router. By the end, you'll have a working Esputnik agent that can bulk add 500 new email contacts, delete sms message template with id 123, get status of yesterday's contact import through natural language commands.

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

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

Also integrate Esputnik with

OpenAI Agents SDK Claude Agent SDK Claude Code Claude Cowork Codex OpenClaw Hermes CLI LangChain Vercel AI SDK Mastra AI LlamaIndex CrewAI

TL;DR

Here's what you'll learn:

Get a Esputnik account set up and connected to Composio
Install the Google ADK and Composio packages
Create a Composio Tool Router session for Esputnik
Build an agent that connects to Esputnik through MCP
Interact with Esputnik 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 Esputnik MCP server, and what's possible with it?

The Esputnik MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Esputnik account. It provides structured and secure access to your marketing automation tools, so your agent can perform actions like sending broadcasts, managing contacts, importing data, and handling push notifications on your behalf.

Bulk contact import and management: Quickly add or update thousands of contacts at once, check import status, and keep your lists up to date with minimal effort.
Broadcast and message control: Retrieve, review, and manage your marketing broadcasts and app inbox messages, ensuring your campaigns run smoothly.
Order and transactional data automation: Import and synchronize large batches of order data, keeping your marketing segmentation and triggers accurate and relevant.
Push and SMS notification management: Activate or deactivate push tokens, delete outdated SMS templates, and fine-tune your notification workflows directly through your agent.
Domain and integration setup: Register domains for web tracking or widgets, helping you expand and customize your communication reach seamlessly.

Supported Tools & Triggers

Tools

Add ContactTool to create or update a single contact in eSputnik in real-time.

Add DomainRegister a domain with eSputnik for web tracking, widgets, or web push notifications.

Add Orders BulkTool to transfer orders in bulk to eSputnik.

Add Unsubscribed EmailsTool to add email addresses to the list of unsubscribed contacts.

Add Web Push DomainTool to add a domain for web push notifications in eSputnik.

Attach Contacts to SegmentTool to attach contacts to a static segment (group) by contact IDs or external customer IDs.

Bulk Add or Update ContactsBulk add or update up to 3000 contacts in eSputnik asynchronously.

Change Mobile Push Token ActivityActivate or deactivate a mobile push notification token in eSputnik.

Create API TokenGenerate a new API token for authentication.

Create App Inbox MessageTool to create a basic App Inbox message in eSputnik.

Create Contacts from FileImport or update contacts from an external file in eSputnik.

Create Email MessageTool to create or update an email message in eSputnik.

Create Mobile Push MessageTool to create a new mobile push notification message in eSputnik.

Create SMS MessageTool to create a basic SMS message template in eSputnik.

Create Telegram MessageCreate a basic Telegram bot message in eSputnik.

Delete App Inbox MessageTool to delete an App Inbox message by its ID from eSputnik.

Delete App Inbox TranslationDelete a language translation of an App Inbox message from eSputnik.

Delete BroadcastTool to cancel a scheduled broadcast campaign.

Delete ContactTool to delete a contact by its Yespo ID.

Delete Contact by External IDDelete a contact from eSputnik using their external customer ID.

Delete Email MessageDelete a basic email message by its ID from eSputnik.

Delete Email TranslationDelete a translation of a base email message from eSputnik.

Delete Mobile Push MessageDelete a base Mobile Push message by its ID from eSputnik.

Delete Mobile Push TranslationDelete a language version of a base Mobile Push message from eSputnik.

Delete OrdersTool to schedule asynchronous deletion of orders in eSputnik.

Delete SMS MessageDelete a base SMS message template by its ID from eSputnik.

Delete SMS TranslationDelete a language version of a base SMS message from eSputnik.

Delete Telegram MessageDelete a base Telegram bot message by its ID from eSputnik.

Delete Telegram TranslationDelete a language version of a Telegram bot message from eSputnik.

Detach Contacts from SegmentTool to delete contacts from a static segment by contact IDs or external customer IDs.

Generate Event V2Tool to send backend events from websites and mobile apps to eSputnik.

Generate Event V3Tool to generate events in eSputnik v3 API.

Generate Past Events V2Tool to transfer past event data from your CRM or data store to eSputnik using v2 API.

Generate Past Events V3Tool to generate past events in eSputnik v3 API.

Get Account InfoRetrieve basic eSputnik account information.

Get App Inbox MessageRetrieves an App Inbox message by its unique identifier from eSputnik.

Get BroadcastsRetrieve a paginated list of broadcast campaigns from eSputnik.

Get ContactRetrieve complete information about a contact by their ID.

Get Contact EmailsTool to retrieve email addresses of contacts by their contact IDs.

Get Contact Import StatusRetrieve the status of a contact import session in eSputnik.

Get Contact Message HistoryRetrieve a contact's message history across multiple channels from eSputnik.

Get ContactsSearch for contacts in eSputnik using various filter criteria.

Get Contact SubscriptionsRetrieve all subscription categories a contact is enrolled in.

Get Email InterfacesTool to retrieve all configured email interfaces (sender names) from eSputnik.

Get Email MessageRetrieves an email message by its unique identifier from eSputnik.

Get Email View LinkGet a link to view an email message in browser from eSputnik.

Get Message StatusRetrieve delivery status for sent messages across all channels (email, SMS, Viber, push).

Get Mobile Push MessageRetrieves a mobile push message by its unique identifier from eSputnik.

Get Organization BalanceRetrieve the current eSputnik organization balance.

Get Organization Billing HistoryRetrieve the organization's billing history from eSputnik, broken down by day and media channel.

Get Preprocessor File StatusRetrieve the status of a preprocessor file upload session.

Get Product Feeds ConfigurationTool to retrieve product feeds configuration from eSputnik.

Get Promocodes CountGet the number of available promotional codes in eSputnik.

Get Site DomainRetrieve the organization's domain configuration from eSputnik.

Get Site Tracking ScriptRetrieve the site tracking script for your eSputnik account.

Get SMS InterfacesRetrieve all SMS interfaces (alpha names) configured for the organization.

Get Subscription CategoriesRetrieve all subscription categories for the organization.

Get Telegram MessageRetrieve a Telegram bot message by its unique identifier from eSputnik.

List Promotional CodesRetrieve a list of promotional codes from eSputnik.

List Web Push DomainsRetrieve the list of domains registered for web push notifications.

Remove From UnsubscribedTool to remove email addresses from the unsubscribed contacts list in eSputnik.

Search App Inbox MessagesSearch for mobile App Inbox messages using a part of the name or a tag.

Search ContactsSearch for all contacts in a segment (group).

Search Email MessagesSearch for email messages using a part of their name or a tag.

Search Mobile Push MessagesSearch for mobile push messages using part of the name or a tag.

Search SegmentsSearch for and retrieve available segments (groups) in eSputnik.

Search SMS MessagesSearch for SMS messages using part of their names or tags in eSputnik.

Search Telegram MessagesSearch for Telegram bot messages using a part of name or a tag.

Search Viber MessagesSearch for Viber messages using part of the name or a tag.

Search WorkflowsSearch for and retrieve available workflows from eSputnik.

Send EmailSend an email message to one or more contacts via eSputnik API.

Send Prepared MessageTool to send a prepared message to one or many contacts.

Subscribe ContactTool to subscribe a contact for double opt-in implementation.

Update App Inbox MessageTool to update the base App Inbox message in eSputnik.

Update App Inbox TranslationTool to update or add a language version for an App Inbox message in eSputnik.

Update ContactTool to update contact information by contact ID.

Update Contact SubscriptionsTool to update the subscription categories a contact is enrolled in.

Update Email MessageTool to update an existing email message in eSputnik.

Update Email TranslationTool to update or add a language version for a base email message in eSputnik.

Update Interaction StatusTool to update the status of a message interaction using interaction_id.

Update Mobile Push MessageTool to update an existing mobile push notification message in eSputnik.

Update Mobile Push TranslationTool to update or add a language version for a mobile push message in eSputnik.

Update Preprocessor File By IDTool to update a preprocessor file's data by providing a new external link.

Update SMS MessageTool to update an existing base SMS message template in eSputnik.

Update SMS TranslationTool to update a language version of an SMS message in eSputnik.

Update Telegram MessageUpdate a base Telegram bot message in eSputnik.

Update Telegram TranslationUpdate a translated telegram bot message in eSputnik.

Upload Preprocessor FileTool to upload a file for the preprocessor from an external repository.

Upload Promotional CodesTool to upload promotional codes to eSputnik in bulk.

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:

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

Step-by-step Guide

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

Getting API Keys for Google and Composio

Google API Key

Go to Google AI Studio 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.
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.

Install dependencies

bash

pip install google-adk composio python-dotenv

Inside your virtual environment, install the required packages.

What's happening:

google-adk is Google's Agents Development Kit
composio connects your agent to Esputnik via MCP
python-dotenv loads environment variables

Set up ADK project

bash

adk create my_agent

Set up a new Google ADK project.

What's happening:

This creates an agent folder with a root agent file and .env file

Set environment variables

bash

GOOGLE_API_KEY=your-google-api-key
COMPOSIO_API_KEY=your-composio-api-key
COMPOSIO_USER_ID=your-user-id-or-email

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

Import modules and validate environment

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.")

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

Create Composio client and Tool Router session

python

composio_client = Composio(api_key=COMPOSIO_API_KEY)

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

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

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

Set up the McpToolset and create the Agent

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 Esputnik operations."
    ),
    tools=[composio_toolset],
)

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

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

Run the agent

bash

# Run in CLI mode
adk run my_agent

# Or run in web UI mode
adk web

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

Complete Code

Here's the complete code to get you started with Esputnik and Google ADK:

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=["esputnik"],
)

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 Esputnik operations."
    ),  
    tools=[composio_toolset],
)

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

Conclusion

You've successfully integrated Esputnik with the Google ADK through Composio's MCP Tool Router. Your agent can now interact with Esputnik using natural language commands.

Key takeaways:

The Tool Router approach dynamically routes requests to the appropriate Esputnik 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.

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FAQ

What are the differences in Tool Router MCP and Esputnik MCP?

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

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

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

Used by agents from

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We handle tool reliability, observability, and security so you never have to second-guess an agent action.

Get started for free Get a demo↗

Harsha GaddipatiCo-founder, Slashy

Karan skipped his own birthday party to fix our critical issue. It was 10 pm and he diverted his Waymo to help us instead. This really sets the bar, shows you the commitment you need to have when users rely on your software.

Abhi AryaCo-founder, Opennote

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 has immensely helped in keeping new users on the platform.

Nirman DaveCEO, Zams

We chose Composio over Pipedream because it delivered depth where it mattered. It supported niche tools and tricky edge cases that other platforms simply ignored. Giving us confidence to scale without compromising.

Ryan YuFounder, Extra Thursday

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down in the complexities of managing agent auth would have been a death sentence for Extra Thursday.

Tomisin JenrolaFounder & CEO, SwarmZero

Before partnering with Composio, adding tool integrations was a slow, resource-intensive process. Each integration could take weeks or months of engineering time, and maintaining them meant constantly keeping up with API changes.

Jerome LeclancheCo-Founder, Ingram Technologies

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

Harsha GaddipatiCo-founder, Slashy

Abhi AryaCo-founder, Opennote

Nirman DaveCEO, Zams

Ryan YuFounder, Extra Thursday

Tomisin JenrolaFounder & CEO, SwarmZero

Jerome LeclancheCo-Founder, Ingram Technologies

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

Harsha GaddipatiCo-founder, Slashy

Abhi AryaCo-founder, Opennote

Nirman DaveCEO, Zams

Ryan YuFounder, Extra Thursday

Tomisin JenrolaFounder & CEO, SwarmZero

Jerome LeclancheCo-Founder, Ingram Technologies

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

How to integrate Esputnik MCP with Google ADK

Table of Contents

Connect Esputnik without Auth hassles

Introduction

Also integrate Esputnik with

TL;DR

What is Google ADK?

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

Supported Tools & Triggers

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

What is Composio SDK?

How the Composio SDK works

Step-by-step Guide

Prerequisites

Getting API Keys for Google and Composio

Install dependencies

Set up ADK project

Set environment variables

Import modules and validate environment

Create Composio client and Tool Router session

Set up the McpToolset and create the Agent

Run the agent

Complete Code

Conclusion

How to build Esputnik MCP Agent with another framework

OpenAI Agents SDK

Claude Agent SDK

Claude Code

Claude Cowork

Codex

OpenClaw

Hermes

CLI

LangChain

Vercel AI SDK

Mastra AI

LlamaIndex

CrewAI

Explore Other Toolkits

Reddit

Facebook

Linkedin

FAQ

What are the differences in Tool Router MCP and Esputnik MCP?

Can I use Tool Router MCP with Google ADK?

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

How safe is my data with Composio Tool Router?

Used by agents from

Never worry about agent reliability