How to integrate Ahrefs MCP with Google ADK

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Introduction

This guide walks you through connecting Ahrefs to Google ADK using the Composio tool router. By the end, you'll have a working Ahrefs agent that can get domain rating trend for competitor site, list all broken backlinks for my website, find keyword volume for 'ai tools' in us, show top referring domains for example.com through natural language commands.

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

The Ahrefs MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Ahrefs account. It provides structured and secure access to your SEO and marketing data, so your agent can perform actions like analyzing backlinks, researching keywords, auditing domain authority, and uncovering competitive insights on your behalf.

  • Comprehensive backlink analysis: Instantly retrieve detailed backlink profiles, stats, and broken link data for any website to inform your SEO strategy or spot link-building opportunities.
  • Keyword research and trends: Explore keyword overviews, search volumes by country, and discover matching or related terms to optimize content and target the right audience.
  • Domain authority tracking: Fetch up-to-date domain ratings or track historical changes to monitor the SEO health and growth of your own sites or competitors over time.
  • Batch competitor and site analysis: Analyze up to 100 domains or URLs at once to compare SEO metrics, spot weaknesses, and benchmark your performance against competitors efficiently.
  • Outbound link and partnership insights: Identify all external domains a site links to, helping you understand content strategy, partnerships, and potential link-building prospects.

Supported Tools & Triggers

Tools
Backlinks stats retrievalRetrieves comprehensive backlink statistics for a specified website or url using ahrefs' site explorer tool.
Batch Url AnalysisPerforms a batch analysis on multiple urls or domains using ahrefs' powerful seo metrics.
Domain rating for site explorerRetrieves the domain rating (dr) for a specified domain.
Domain rating historyRetrieves the historical domain rating (dr) data for a specified domain over time.
Explore keywords overviewRetrieves a comprehensive overview of keyword data from ahrefs' keywords explorer tool.
Explore keyword volume by countryRetrieves the search volume data for specified keywords across different countries using ahrefs' keywords explorer tool.
Explore linked domains of a siteRetrieves a list of external domains that the specified target website or url links to, using ahrefs' site explorer functionality.
Explore matching terms for keywordsThe keywords explorer matching terms endpoint retrieves a list of keyword phrases that match or contain the specified keyword from ahrefs' vast database.
Fetch all backlinksRetrieves a comprehensive list of backlinks for a specified website or url using ahrefs' site explorer tool.
Fetch broken backlinks dataRetrieves a list of broken backlinks for a specified website using ahrefs' site explorer tool.
Fetch competitors overviewRetrieves a comprehensive overview of competitor data in relation to keyword rankings and organic search performance.
Fetch rank tracker overviewThe getranktrackeroverview endpoint retrieves a comprehensive summary of keyword rankings and seo performance data from ahrefs' rank tracker tool.
Fetch site explorer referring domainsRetrieves a list of domains that have backlinks pointing to a specified target website.
Fetch total search volume historyRetrieves the historical total search volume data for specified keywords using ahrefs' site explorer tool.
Get serp overviewRetrieves a comprehensive overview of search engine results pages (serp) data for specified keywords or queries.
Get site audit projectsRetrieves a list of site audit projects associated with the authenticated ahrefs account.
Get site explorer country metricsRetrieves country-specific site explorer metrics for a given website from ahrefs.
Get site explorer linked anchors externalThe site-explorer-linked-anchors-external endpoint retrieves data about external anchor texts linking to a specified target website.
Get url rating historyRetrieves the historical url rating data for a specified url over time.
Linked anchors explorerRetrieves information about internal linked anchors for a specified website using the ahrefs api.
List best by external linksThe 'get best by external links' endpoint retrieves a list of pages from a specified website, ranked by the number of external links pointing to them.
Pages by traffic overviewRetrieves a list of pages from a specified website, ordered by their estimated organic search traffic.
Retrieve anchor dataRetrieves anchor text data for a specified website or url using ahrefs' site explorer tool.
Retrieve best by internal linksRetrieves data on the best-performing internal links within a specified website using ahrefs' site explorer feature.
Retrieve crawler ip rangesRetrieves the list of ip address ranges used by ahrefs' web crawler (ahrefsbot).
Retrieve organic competitorsThe getorganiccompetitors endpoint in the ahrefs api provides a comprehensive analysis of websites competing for organic search rankings with a specified target domain.
Retrieve organic keywordsRetrieves organic keywords data for a specified website using ahrefs' site explorer tool.
Retrieve outlinks statsRetrieves comprehensive statistics about outgoing links (outlinks) from a specified website using ahrefs' site explorer tool.
Retrieve paid pages dataRetrieves information about paid pages (ppc advertising) for a specified website using ahrefs' site explorer tool.
Retrieve public crawler ipsRetrieves a list of ip addresses currently used by ahrefsbot, ahrefs' web crawler.
Retrieve related termsThe keywords explorer related terms endpoint retrieves a list of related terms for a given keyword using ahrefs' extensive keyword database.
Retrieve site explorer keywords historyRetrieves historical keyword performance data for a specified website or domain using ahrefs' site explorer.
Retrieve site explorer metricsThe getsiteexplorermetrics endpoint retrieves comprehensive seo metrics for a specified website using ahrefs' site explorer tool.
Retrieve site explorer metrics historyRetrieves historical seo metrics data for a specified website over a given time period.
Retrieve site explorer pages historyThe get site explorer pages history endpoint retrieves historical data about specific pages or domains from ahrefs' site explorer.
Retrieve site explorer referring domains historyRetrieves the historical data of referring domains for a specified website or url over time.
Retrieve subscription limits and usageRetrieves detailed information about the current subscription limits and usage for an ahrefs account.
Retrieve top pages from site explorerRetrieves data about the top-performing pages of a specified website using ahrefs' site explorer tool.
Retrieve volume historyRetrieves the historical search volume data for a specified keyword using ahrefs' keywords explorer tool.
Search suggestions explorerRetrieves search suggestions for a given keyword or phrase using ahrefs' keywords explorer tool.

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-google 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 Ahrefs via MCP
  • composio-google provides the Google ADK provider
  • 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 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.")
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
print("Initializing Composio client...")
composio_client = Composio(api_key=COMPOSIO_API_KEY, provider=GoogleProvider())

print("Creating Composio session...")
composio_session = composio_client.create(
    user_id=COMPOSIO_USER_ID,
    toolkits=["ahrefs"],
)

COMPOSIO_MCP_URL = composio_session.mcp.url
print(f"Composio MCP HTTP 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
print("Creating Composio toolset for the agent...")
composio_toolset = McpToolset(
    connection_params=StreamableHTTPConnectionParams(
        url=COMPOSIO_MCP_URL,
        headers={"x-api-key": os.getenv("COMPOSIO_API_KEY")}
    )
)

root_agent = Agent(
    model="gemini-2.5-pro",
    name="composio_agent",
    description="An agent that uses Ahrefs 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 Ahrefs 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 Ahrefs 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

def main():
    try:
        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.")

        print("Initializing Composio client...")
        composio_client = Composio(api_key=COMPOSIO_API_KEY, provider=GoogleProvider())

        print("Creating Composio session...")
        composio_session = composio_client.create(
            user_id=COMPOSIO_USER_ID,
            toolkits=["ahrefs"],
        )

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

        print("Creating Composio toolset for the agent...")
        composio_toolset = McpToolset(
            connection_params=StreamableHTTPConnectionParams(
                url=COMPOSIO_MCP_URL,
                headers={"x-api-key": os.getenv("COMPOSIO_API_KEY")}
            )
        )

        root_agent = Agent(
            model="gemini-2.5-pro",
            name="composio_agent",
            description="An agent that uses Ahrefs 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 Ahrefs operations."
            ),
            tools=[composio_toolset],
        )

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

    except Exception as e:
        print(f"\nAn error occurred during agent setup: {e}")

if __name__ == "__main__":
    main()

Conclusion

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

Key takeaways:

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

OpenAI Agents SDK

OpenAI Agents SDK

Use Ahrefs MCP with OpenAI Agents SDK

Claude Agent SDK

Claude Agent SDK

Use Ahrefs MCP with Claude Agent SDK

LangChain

LangChain

Use Ahrefs MCP with LangChain

Vercel AI SDK

Vercel AI SDK

Use Ahrefs MCP with Vercel AI SDK

Mastra AI

Mastra AI

Use Ahrefs MCP with Mastra AI

LlamaIndex

LlamaIndex

Use Ahrefs MCP with LlamaIndex

CrewAI

CrewAI

Use Ahrefs MCP with CrewAI

FAQ

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

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

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

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

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