How to integrate Shippo MCP with Google ADK

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Introduction

This guide walks you through connecting Shippo to Google ADK using the Composio tool router. By the end, you'll have a working Shippo agent that can create shipping label for new order, track shipment status by tracking number, get shipping rates for a package through natural language commands.

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

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

TL;DR

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

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

Supported Tools & Triggers

Tools
Create Shippo AddressTool to create a new address in Shippo.
Create BatchTool to create a batch of shipments for bulk label purchasing.
Create Carrier AccountTool to create a new carrier account in Shippo.
Create Customs ItemCreate a new customs item for international shipments.
Create Live RateTool to generate live shipping rates from multiple carriers for a given shipment.
Create ManifestTool to create a new shipping manifest with Shippo.
Create Merchant AddressTool to create a new address for a merchant using Shippo's Platform API.
Create Merchant BatchTool to create a batch for a merchant using the Shippo Platform API.
Create Merchant Carrier AccountTool to create a carrier account for a merchant using the Shippo Platform API.
Create Merchant Customs DeclarationTool to create a new customs declaration for a merchant using Shippo's Platform API.
Create Merchant Customs ItemTool to create a new customs item for a merchant using Shippo's Platform API.
Create Merchant OrderTool to create an order for a merchant using the Shippo Platform API.
Create Merchant ParcelTool to create a new parcel for a merchant using Shippo's Platform API.
Create Merchant RefundTool to create a refund for a merchant using the Shippo Platform API.
Create Merchant ShipmentTool to create a new shipment for a merchant using Shippo's Platform API.
Create Merchant TransactionTool to create a shipping label transaction for a merchant using the Shippo Platform API.
Create OrderTool to create a new order in Shippo.
Create ParcelTool to create a new parcel in Shippo with dimensions and weight specifications.
Create RefundTool to create a refund for a Shippo transaction.
Create Service GroupTool to create a new Shippo service group with specified pricing model and carrier service levels.
Create ShipmentTool to create a new shipment with Shippo.
Register Tracking WebhookTool to register a tracking webhook for a shipment.
Create TransactionTool to create a shipping label transaction with Shippo.
Create User Parcel TemplateTool to create a new user parcel template in Shippo with preset dimensions and weight specifications.
Create Shippo WebhookTool to create a new webhook subscription in Shippo.
Delete Default Parcel TemplateTool to clear the current default parcel template.
Delete User Parcel TemplateTool to delete a user-created parcel template.
Delete WebhookTool to delete a specific webhook from Shippo.
Get AddressTool to retrieve a previously created address from Shippo.
Get Carrier AccountTool to retrieve a carrier account by its ID.
Get Carrier Parcel TemplateTool to retrieve a specific carrier parcel template by its token.
Get Carrier Registration StatusTool to retrieve carrier registration status from Shippo.
Get Customs DeclarationTool to retrieve a customs declaration by its ID.
Get customs itemTool to retrieve a customs item from Shippo.
Get Default Parcel TemplateTool to retrieve the current default parcel template for live rates at checkout.
Get MerchantTool to retrieve a merchant from the Shippo Platform API.
Get Merchant AddressTool to retrieve a merchant address from Shippo Platform API.
Get Merchant BatchTool to retrieve a batch for a merchant from the Shippo Platform API.
Get Merchant Carrier AccountTool to retrieve a carrier account for a merchant using the Shippo Platform API.
Get Merchant Carrier Registration StatusTool to retrieve carrier registration status for a specific merchant using Shippo's Platform API.
Get Merchant Customs DeclarationTool to retrieve a specific customs declaration for a merchant using Shippo's Platform API.
Get Merchant Customs ItemTool to retrieve a customs item for a merchant using the Shippo Platform API.
Get Merchant ManifestTool to retrieve a manifest for a merchant from the Shippo Platform API.
Get Merchant OrderTool to retrieve an order for a merchant from the Shippo Platform API.
Get Merchant ParcelTool to retrieve a parcel for a merchant from the Shippo Platform API.
Get Merchant RateTool to retrieve a specific shipping rate for a merchant using the Shippo Platform API.
Get Merchant RefundTool to retrieve a merchant refund from Shippo Platform API.
Get Merchant ShipmentTool to retrieve a shipment for a merchant from the Shippo Platform API.
Get Merchant Tracking StatusTool to retrieve tracking status for a merchant from Shippo Platform API.
Get Merchant TransactionTool to retrieve a shipping label transaction for a merchant from the Shippo Platform API.
Get OrderTool to retrieve an order from Shippo.
Get ParcelTool to retrieve a parcel by its ID.
Get RateTool to retrieve a specific shipping rate by its ID.
Get RefundTool to retrieve a refund by its ID from Shippo.
Get ShipmentTool to retrieve a shipment by its ID.
Get Shippo AccountTool to retrieve a Shippo Account from the Shippo Platform API.
Get Tracking StatusTool to retrieve tracking status for a shipment from Shippo.
Get TransactionTool to retrieve a shipping label transaction by its ID.
Get User Parcel TemplateTool to retrieve a specific user-created parcel template by its object ID.
Get WebhookTool to retrieve a specific webhook subscription from Shippo.
List AddressesTool to list all addresses in the Shippo account with pagination support.
List Carrier AccountsTool to list all carrier accounts configured in the Shippo account with pagination support.
List Carrier Parcel TemplatesTool to list all carrier parcel templates available for creating shipments.
List Customs DeclarationsTool to list all customs declarations in the Shippo account with pagination support.
List Customs ItemsTool to list all customs items with pagination support.
List ManifestsTool to list all shipping manifests from Shippo.
List Merchant AddressesTool to list all addresses for a specific merchant using the Shippo Platform API.
List Merchant Carrier AccountsTool to list all carrier accounts for a specific merchant using the Shippo Platform API.
List Merchant Customs DeclarationsTool to list all customs declarations for a specific merchant using the Shippo Platform API.
List Merchant Customs ItemsTool to list all customs items for a specific merchant using the Shippo Platform API.
List Merchant ManifestsTool to list all manifests for a specific merchant using Shippo's Platform API.
List Merchant ParcelsTool to list all parcels for a specific merchant using the Shippo Platform API.
List MerchantsTool to list all merchants using the Shippo Platform API with pagination support.
List Merchant Shipment Rates by CurrencyTool to retrieve available shipping rates for a merchant's shipment filtered by currency code using the Shippo Platform API.
List Merchant ShipmentsTool to list all shipments for a specific merchant using Shippo's Platform API.
List Merchant TransactionsTool to list all shipping label transactions for a merchant using the Shippo Platform API.
List OrdersTool to list all orders in the Shippo account with pagination support.
List RefundsTool to retrieve a list of all refunds from Shippo.
List Service GroupsTool to retrieve all service groups configured in Shippo.
List Shipment RatesTool to retrieve available shipping rates for a specific shipment.
List Shipment Rates by CurrencyTool to retrieve available shipping rates for a specific shipment filtered by currency code.
List ShipmentsTool to list all shipments in the Shippo account with pagination support.
List Shippo AccountsTool to list all Managed Shippo Accounts.
List User Parcel TemplatesTool to list all user-created parcel templates.
Purchase Merchant BatchTool to purchase a batch for a merchant via the Shippo Platform API.
Remove Shipments From BatchTool to remove shipments from a batch for a merchant using the Shippo Platform API.
Update Carrier AccountTool to update an existing carrier account in Shippo.
Update Default Parcel TemplateTool to update the default parcel template for live rates at checkout in Shippo.
Update MerchantTool to update an existing merchant in Shippo Platform API.
Update Merchant Carrier AccountTool to update a carrier account for a merchant in Shippo Platform API.
Update Service GroupTool to update an existing Shippo service group.
Update User Parcel TemplateTool to update an existing user parcel template with new weight and carrier template settings.
Update WebhookTool to update an existing webhook in Shippo.
Validate AddressTool to validate an address using the Shippo API.
Validate Merchant AddressTool to validate a merchant address using the Shippo Platform API.

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

What is Tool Router?

Composio's Tool Router 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 Tool Router

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Tool Router works

The Tool Router 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

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 Shippo 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=["shippo"],
)

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 Shippo 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 Shippo 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=["shippo"],
)

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

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

Conclusion

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

Key takeaways:

  • The Tool Router approach dynamically routes requests to the appropriate Shippo 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 Shippo MCP Agent with another framework

OpenAI Agents SDK

OpenAI Agents SDK

Use Shippo MCP with OpenAI Agents SDK

Claude Agent SDK

Claude Agent SDK

Use Shippo MCP with Claude Agent SDK

LangChain

LangChain

Use Shippo MCP with LangChain

Vercel AI SDK

Vercel AI SDK

Use Shippo MCP with Vercel AI SDK

Mastra AI

Mastra AI

Use Shippo MCP with Mastra AI

LlamaIndex

LlamaIndex

Use Shippo MCP with LlamaIndex

CrewAI

CrewAI

Use Shippo MCP with CrewAI

Claude Code

Claude Code

Use Shippo MCP with Claude Code

Codex

Codex

Use Shippo MCP with Codex

FAQ

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

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

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

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

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