How to integrate ActiveMerge MCP with Google ADK

This guide walks you through connecting ActiveMerge to Google ADK using the Composio tool router. By the end, you'll have a working ActiveMerge agent that can generate invoices from saved templates, merge contract files for client signature, store signed ndas in project folders through natural language commands. This guide will help you understand how to give your Google ADK agent real control over a ActiveMerge account through Composio's ActiveMerge MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved.

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ActiveMerge is a document automation platform for generating documents, images, merged files, and e-signature workflows. It helps teams turn templates and stored files into finished, shareable documents faster.

13 Tools

Introduction

This guide walks you through connecting ActiveMerge to Google ADK using the Composio tool router. By the end, you'll have a working ActiveMerge agent that can generate invoices from saved templates, merge contract files for client signature, store signed ndas in project folders through natural language commands.

This guide will help you understand how to give your Google ADK agent real control over a ActiveMerge account through Composio's ActiveMerge 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 a ActiveMerge account set up and connected to Composio
  • Install the Google ADK and Composio packages
  • Create a Composio Tool Router session for ActiveMerge
  • Build an agent that connects to ActiveMerge through MCP
  • Interact with ActiveMerge 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 ActiveMerge MCP server, and what's possible with it?

The ActiveMerge MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your ActiveMerge account. It provides structured and secure access to your templates, workflows, generation jobs, credits, and stored files, so your agent can generate documents, create images, run template workflows, track generation progress, and manage generated files on your behalf.

  • Template-based document generation: Have your agent review available document templates and their required placeholders, then generate documents using your case-sensitive data.
  • Automated image creation: Let the agent inspect image templates, create images from your records, and check each generation job for progress, errors, and completed output.
  • Multi-document workflows: Direct your agent to find available workflows, collect their required placeholders, and generate documents for every template in a chosen workflow.
  • Generation tracking and credit checks: Instruct your agent to check remaining credits before starting work, then review document generation history and job status.
  • Generated file management: Have your agent browse stored files, save completed document outputs to permanent storage, and prepare stored files for download.

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:
  • A Google API key for Gemini models
  • A Composio account and API key
  • Python 3.9 or later installed
  • Basic familiarity with Python
2

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.
3

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 ActiveMerge via MCP
  • python-dotenv loads environment variables
4

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
5

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
6

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
7

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=["active_merge"],
)

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
8

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 ActiveMerge 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
9

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 ActiveMerge 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=["active_merge"],
)

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

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

Conclusion

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

Key takeaways:

  • The Tool Router approach dynamically routes requests to the appropriate ActiveMerge 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.

TOOLS

Supported Tools

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

Generate Document

Start asynchronous document generation from a template and case-sensitive placeholder data.

Generate Images

Start an asynchronous image-generation job from inline JSON records.

Generate Workflow Documents

Generate documents for every template in an ActiveMerge workflow using case-sensitive placeholder data.

Get Credits

Get total, used, remaining, plan, and prepaid ActiveMerge credits before running credit-consuming generation tools.

Get Document Generations

Get one document-generation job by ID, or list and filter generation history when no job ID is supplied.

Get Document Template Placeholders

Return the case-sensitive placeholder names required by one document template.

Get File Download URL

Create a temporary download URL for a file in ActiveMerge cloud storage.

Get Image Generation

Get an image-generation job's progress, credit usage, errors, and temporary ZIP download URL when complete.

Get Image Templates

List image templates and basic placeholders, or get complete dimensions, positions, defaults, and styles for one template when template_id is supplied.

Get Workflows

List available ActiveMerge workflows, or return the case-sensitive placeholders for one workflow when workflow_id is supplied.

List Document Templates

List document templates available to the connected ActiveMerge account, including the unique template IDs needed for placeholder lookup and generation.

List Stored Files

List the immediate files and folders at the ActiveMerge cloud-storage root, or directly inside parent_folder_id when supplied.

Save Generated Files

Save non-expired output from a completed document-generation job to permanent ActiveMerge cloud storage.

FRAMEWORKS

How to build ActiveMerge MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use ActiveMerge MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use ActiveMerge MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use ActiveMerge MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use ActiveMerge MCP with Claude Cowork

Codex logo

Codex

Use ActiveMerge MCP with Codex

OpenClaw logo

OpenClaw

Use ActiveMerge MCP with OpenClaw

Hermes logo

Hermes

Use ActiveMerge MCP with Hermes

CLI logo

CLI

Use ActiveMerge MCP with CLI

LangChain logo

LangChain

Use ActiveMerge MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use ActiveMerge MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use ActiveMerge MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use ActiveMerge MCP with LlamaIndex

CrewAI logo

CrewAI

Use ActiveMerge MCP with CrewAI

FAQ

Frequently asked questions

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

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 ActiveMerge tools.

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

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