# How to integrate Hashnode MCP with Google ADK

```json
{
  "title": "How to integrate Hashnode MCP with Google ADK",
  "toolkit": "Hashnode",
  "toolkit_slug": "hashnode",
  "framework": "Google ADK",
  "framework_slug": "google-adk",
  "url": "https://composio.dev/toolkits/hashnode/framework/google-adk",
  "markdown_url": "https://composio.dev/toolkits/hashnode/framework/google-adk.md",
  "updated_at": "2026-05-12T10:14:41.459Z"
}
```

## Introduction

This guide walks you through connecting Hashnode to Google ADK using the Composio tool router. By the end, you'll have a working Hashnode agent that can list your most recent hashnode articles, check if 'devjournal.com' domain is available, fetch popular tags for trending topics through natural language commands.
This guide will help you understand how to give your Google ADK agent real control over a Hashnode account through Composio's Hashnode MCP server.
Before we dive in, let's take a quick look at the key ideas and tools involved.

## Also integrate Hashnode with

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

## TL;DR

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

The Hashnode MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Hashnode account. It provides structured and secure access to your blog and developer publication data, so your agent can fetch articles, manage publication invites, reply to comments, and explore tags or user details on your behalf.
- Fetch and analyze articles: Let your agent retrieve single articles or lists of posts from your publications, making it easy to summarize, review, or manage your content.
- Publication invite handling: Effortlessly accept publication invitations or view all your pending invites, streamlining the process of joining new developer teams or publications.
- Interact with comments and replies: Have your agent add replies to existing comments, enabling automated engagement and conversation management on your posts.
- Tag discovery and trend tracking: Easily fetch popular tags so your agent can suggest relevant topics, optimize your writing focus, or help you follow industry trends.
- User and publication insights: Retrieve detailed profile information for any user or publication, giving your agent the context needed for personalized recommendations and content actions.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `HASHNODE_ACCEPT_INVITE_TO_PUBLICATION` | Hashnode Accept Publication Invite | Tool to accept a publication invitation. Use when you have a valid invite token and want to join the publication. |
| `HASHNODE_ADD_COMMENT` | Hashnode Add Comment | Add a comment to a Hashnode post. Requires a valid post ID (obtainable via HASHNODE_FETCH_STORIES_FEED or HASHNODE_FETCH_POSTS) and markdown content. For replying to existing comments, use the HASHNODE_ADD_REPLY action instead. |
| `HASHNODE_ADD_CONTENT_BLOCK` | Hashnode Add Content Block | Tool to add a content block to a Hashnode documentation project. Use when you need to add embeddable content (such as code snippets, widgets, or other custom content) to a documentation project. |
| `HASHNODE_ADD_CUSTOM_MDX_COMPONENT` | Hashnode Add Custom MDX Component | Tool to add a custom MDX component to a Hashnode documentation project. Use when you need to register a new reusable React component that can be used in MDX content. Requires a project ID, component identifier, and the JavaScript/React code defining the component. |
| `HASHNODE_ADD_DOCUMENTATION_PROJECT_CUSTOM_DOMAIN` | Hashnode: Add Documentation Project Custom Domain | Tool to add a custom domain to a Hashnode documentation project. Use when setting up custom domain mapping for documentation sites. Requires projectId, domain name, and wwwDomain boolean flag. |
| `HASHNODE_ADD_REPLY` | Hashnode Add Reply | Tool to add a reply to an existing comment. Use after confirming comment ID and reply content. |
| `HASHNODE_CHECK_CUSTOM_DOMAIN_AVAILABILITY` | Hashnode: Check Custom Domain Availability | Tool to check if a custom domain is available for your Hashnode publication. Use when verifying domain mapping before setup. |
| `HASHNODE_CHECK_SUBDOMAIN_AVAILABILITY` | Hashnode: Check Subdomain Availability | Tool to check if a subdomain is available for a Hashnode publication. Use when verifying subdomain availability before creating a publication. |
| `HASHNODE_CREATE_DOCUMENTATION_API_REFERENCE` | Create Documentation API Reference | Tool to create a documentation API reference from an OpenAPI specification URL in a Hashnode project. Use when you need to import and generate API documentation from a Swagger/OpenAPI spec. Requires projectId and the URL of the API specification. |
| `HASHNODE_CREATE_DOCUMENTATION_LINK` | Create Documentation Link | Tool to create a link within a Hashnode documentation guide. Use when you need to add external or internal links to documentation pages, such as API references, GitHub repositories, or related resources. |
| `HASHNODE_CREATE_DOCUMENTATION_PROJECT` | Hashnode: Create Documentation Project | Tool to create a new documentation project on Hashnode. Use when you need to set up a documentation site for API references, product guides, or developer documentation. Requires a unique name and subdomain. |
| `HASHNODE_CREATE_DOCUMENTATION_SECTION` | Hashnode Create Documentation Section | Tool to create a new documentation section in a Hashnode documentation guide. Use when you need to add a new section to an existing documentation guide within a project. |
| `HASHNODE_CREATE_HASHNODE_DOCUMENTATION_GUIDE` | Create Hashnode Documentation Guide | Tool to create a new documentation guide in a Hashnode documentation project. Use when you need to create a new guide within an existing project. Requires a valid projectId and a name for the guide. |
| `HASHNODE_DELETE_CONTENT_BLOCK` | Hashnode Delete Content Block | Tool to delete a content block from a Hashnode documentation project. Use when you need to remove a custom content block from a project. This action is destructive and cannot be undone. |
| `HASHNODE_DELETE_CUSTOM_MDX_COMPONENT` | Hashnode Delete Custom MDX Component | Tool to delete a custom MDX component from a Hashnode documentation project. Use when removing an existing custom component that is no longer needed. This action is destructive and cannot be undone. |
| `HASHNODE_DISABLE_DOCUMENTATION_PROJECT_AI_SEARCH` | Disable Documentation Project AI Search | Tool to disable AI search for a documentation project on Hashnode. Use when you need to turn off AI-powered search capabilities for a specific documentation project. |
| `HASHNODE_FETCH_INVITATIONS` | Hashnode: Fetch Invitations | Fetch pending publication invitations for a Hashnode publication. Returns a list of pending invites that have been sent but not yet accepted. Requires the authenticated user to be a member (owner/admin/editor) of the target publication. Use this to review outstanding team invitations before sending reminders or revoking invites. |
| `HASHNODE_FETCH_POPULAR_TAGS` | Hashnode: Fetch Popular Tags | Tool to fetch a paginated list of popular tags. Use when you need to browse popular tags page by page. |
| `HASHNODE_FETCH_POSTS` | Fetch Publication Posts | Tool to fetch a paginated list of posts from a publication. Use when you need to list posts page by page for a given publication host. |
| `HASHNODE_FETCH_SERIES_POSTS` | Fetch Series Posts | Tool to fetch posts from a series within a publication. Use when retrieving and paginating through series posts in a specific publication. |
| `HASHNODE_FETCH_SINGLE_ARTICLE` | Fetch Single Article | Tool to fetch a single article by slug from a publication. Use when you need the detailed content of a specific post. |
| `HASHNODE_FETCH_STORIES_FEED` | Fetch Stories Feed | Fetch a paginated feed of stories from Hashnode. Returns posts with title, brief, author info, tags, and reading time. Supports filtering by feed type (RECENT, FEATURED, FOLLOWING, etc.), reading time range, and tags. Use cursor-based pagination via the 'after' parameter with the endCursor from previous responses. |
| `HASHNODE_FETCH_USER_DETAILS` | Hashnode: Fetch User Details | Tool to fetch detailed user profile information by username. Use when you need public or authorized profile data. |
| `HASHNODE_FOLLOW_TAGS` | Hashnode: Follow Tags | Follow specified tags to customize your content feed on Hashnode. Use when you want to subscribe to content from specific tags to personalize your feed. |
| `HASHNODE_GEN_DOC_PROJECT_PREVIEW_AUTH_TOKEN` | Generate Documentation Project Preview Authorization Token | Tool to generate a JWT authorization token for previewing a documentation project. Use when you need to obtain a JWT to access a documentation project preview. Requires a preview token that must be generated first using the generateDocumentationProjectPreviewToken mutation. |
| `HASHNODE_GET_DOCUMENTATION_PROJECT` | Get Documentation Project | Tool to fetch details of a Docs by Hashnode project by ID or hostname. Use when you need metadata for a documentation project. Provide either project ID or host domain. |
| `HASHNODE_GET_POST` | Get Post by ID | Tool to retrieve a published post by ID from Hashnode. Use when you need to fetch detailed information about a specific post for rendering or displaying. |
| `HASHNODE_GET_PUBLICATION_BY_ID_OR_HOST` | Get Publication by ID or Host | Tool to fetch publication details by ID or hostname. User can provide either publication ID or host. Use when you need metadata for a given publication. Returns comprehensive publication information including author, title, description, and configuration. |
| `HASHNODE_GET_TAG` | Hashnode: Get Tag Details | Tool to fetch detailed information about a tag by its slug. Use when you need tag metadata, follower/post counts, or logo information. |
| `HASHNODE_LIKE_COMMENT` | Hashnode Like Comment | Tool to like a comment on Hashnode. Use when you have a comment ID and want to add a like to that comment. |
| `HASHNODE_LIKE_POST` | Hashnode Like Post | Tool to like a post on Hashnode. Use when you want to add a like/reaction to a specific post. Requires a valid post ID. |
| `HASHNODE_LIKE_REPLY` | Hashnode: Like Reply | Tool to like a reply on Hashnode. Use when you have a reply ID and want to add a like to that reply. |
| `HASHNODE_LIST_PUBLICATIONS` | Hashnode: List Publications | Tool to list all publications of the authenticated user. Use when you need your publication hostnames for downstream actions. |
| `HASHNODE_LIST_TOP_COMMENTERS` | Hashnode: List Top Commenters | Tool to fetch users who have most actively participated in discussions by commenting in the last 7 days. Use when you need to identify top contributors or most engaged users. |
| `HASHNODE_MAP_DOC_PROJECT_CUSTOM_DOMAIN_WWW_REDIRECT` | Hashnode: Map Documentation Project WWW Redirect | Tool to configure WWW redirect for a documentation project's custom domain. Use when you need to enable automatic www subdomain redirection (e.g., www.docs.example.com -> docs.example.com). The project must already have a custom domain added before calling this action. |
| `HASHNODE_ME` | Hashnode: Get Current User | Retrieves profile details of the currently authenticated Hashnode user. Returns the user's identity (id, username, name), profile info (bio, tagline, profile picture, location), social links (website, github, twitter, linkedin), engagement metrics (followers/followings count), and badges. Use this action to get user context for personalization, verify authentication, or retrieve user data for display purposes. |
| `HASHNODE_MOVE_DOCUMENTATION_SIDEBAR_ITEM` | Move Documentation Sidebar Item | Tool to reorder documentation sidebar items within a Hashnode guide. Use when you need to change the position of a sidebar item or move it under a different parent section. Requires the projectId, guideSlug, and itemId. |
| `HASHNODE_PUBLISH_DOCUMENTATION_API_REFERENCE` | Publish Documentation API Reference | Tool to publish a documentation API reference in a Hashnode documentation project. Use when you need to make an API reference guide publicly available. Requires a projectId and guideSlug. |
| `HASHNODE_PUBLISH_POST` | Hashnode Publish Post | Tool to publish a new blog post to a Hashnode publication. Use when you need to create and immediately publish an article. Requires a publicationId (obtainable via HASHNODE_LIST_PUBLICATIONS), title, and markdown content. |
| `HASHNODE_REMOVE_COMMENT` | Hashnode Remove Comment | Tool to remove a comment from a Hashnode post. Use after confirming the comment ID. Returns the ID of the removed comment upon success. |
| `HASHNODE_REMOVE_DOCUMENTATION_GUIDE` | Hashnode Remove Documentation Guide | Tool to remove a documentation guide from a Hashnode project. Use after confirming the project ID and guide slug. This action is destructive and cannot be undone. |
| `HASHNODE_REMOVE_DOCUMENTATION_PROJECT` | Remove Documentation Project | Tool to remove a documentation project from Hashnode. This action frees the custom domain and subdomain and removes all guides and pages. Use after confirming the project ID to be deleted. |
| `HASHNODE_REMOVE_DOCUMENTATION_PROJECT_CUSTOM_DOMAIN` | Hashnode Remove Documentation Project Custom Domain | Tool to remove a custom domain from a Hashnode documentation project. Use when you need to detach a custom domain from a documentation project, reverting it to use only the Hashnode subdomain. |
| `HASHNODE_REMOVE_DOCUMENTATION_SIDEBAR_ITEM` | Remove Documentation Sidebar Item | Tool to remove a sidebar item from a documentation guide on Hashnode. Use when you need to delete a section or page from a guide's sidebar navigation. This action is destructive and cannot be undone. |
| `HASHNODE_REMOVE_POST` | Hashnode Remove Post | Tool to remove (delete) a post from Hashnode. Use after confirming the post ID to be deleted. This action is destructive and cannot be undone. |
| `HASHNODE_REMOVE_REPLY` | Hashnode Remove Reply | Tool to remove a reply from a comment. Use after confirming comment and reply IDs. Returns the removed reply details. |
| `HASHNODE_RENAME_DOCUMENTATION_GUIDE` | Hashnode Rename Documentation Guide | Tool to rename a documentation guide in a Hashnode project. Use when you need to update the name of an existing guide. Requires the projectId, guideSlug, and new name. |
| `HASHNODE_RENAME_DOCUMENTATION_SIDEBAR_ITEM` | Rename Documentation Sidebar Item | Tool to rename a documentation sidebar item within a Hashnode guide. Use when you need to update the display label of a sidebar item (link, page, or section). Requires the projectId, guideSlug, itemId, and new label. |
| `HASHNODE_RESTORE_POST` | Hashnode Restore Post | Tool to restore a previously deleted Hashnode post. Use when you need to undo a post deletion and make the post accessible again. Requires the post ID of the deleted post. |
| `HASHNODE_SAVE_DOCUMENTATION_PAGE_DRAFT_CONTENT` | Save Documentation Page Draft Content | Tool to save draft content for a documentation page in Hashnode. Use when you need to update the content, title, or description of an existing documentation page draft. Requires pageId and projectId, along with at least one of content, title, or description. |
| `HASHNODE_SEARCH_POSTS_OF_PUBLICATION` | Search Posts of Publication | Tool to search and retrieve posts from a specific publication based on a search query. Use when you need to find posts matching specific keywords within a particular Hashnode publication. Supports pagination and sorting by publication date. |
| `HASHNODE_SUBSCRIBE_TO_NEWSLETTER` | Subscribe to Newsletter | Tool to subscribe an email address to a Hashnode publication's newsletter. Use when you need to add a subscriber to a publication's mailing list. Requires a publicationId (obtainable via HASHNODE_LIST_PUBLICATIONS or GET_PUBLICATION) and a valid email address. |
| `HASHNODE_TOGGLE_FOLLOW_USER` | Hashnode: Toggle Follow User | Tool to toggle follow status for a Hashnode user. If you don't follow the user, this will follow them. If you already follow them, this will unfollow them. Use when you need to manage following relationships for the authenticated user. |
| `HASHNODE_UNFOLLOW_TAGS` | Hashnode: Unfollow Tags | Unfollow specified tags to customize your content feed on Hashnode. Use when you want to unsubscribe from content from specific tags to personalize your feed. |
| `HASHNODE_UNSUBSCRIBE_FROM_NEWSLETTER` | Unsubscribe from Newsletter | Tool to unsubscribe an email address from a Hashnode publication's newsletter. Use when you need to remove a subscriber from a publication's mailing list. Requires a publicationId (obtainable via HASHNODE_LIST_PUBLICATIONS or GET_PUBLICATION) and a valid email address. |
| `HASHNODE_UPDATE_COMMENT` | Hashnode Update Comment | Tool to update an existing comment on a Hashnode post. Use after preparing updated content details. |
| `HASHNODE_UPDATE_CONTENT_BLOCK` | Hashnode Update Content Block | Tool to update a content block in a Hashnode documentation project. Use when you need to modify the label or content of an existing embeddable content block (such as code snippets, widgets, or other custom content). |
| `HASHNODE_UPDATE_DOCUMENTATION_APPEARANCE` | Update Documentation Appearance | Tool to update the appearance settings of a Hashnode documentation project. Use when you need to customize the look and feel of a documentation site, including logos, colors, themes, and custom scripts. |
| `HASHNODE_UPDATE_DOCUMENTATION_GENERAL_SETTINGS` | Update Documentation General Settings | Tool to update general settings of a Hashnode documentation project. Use when you need to modify the name, description, custom CSS, or external links of an existing documentation site. Requires the project ID and at least one field to update. |
| `HASHNODE_UPDATE_DOCUMENTATION_GUIDE` | Update Hashnode Documentation Guide | Tool to update an existing documentation guide in a Hashnode project. Use when you need to modify the name, slug, or SEO meta tags of a guide. Requires the projectId and guideId of the guide to update. |
| `HASHNODE_UPDATE_DOCUMENTATION_INTEGRATIONS` | Hashnode: Update Documentation Integrations | Tool to update third-party integrations for a Docs by Hashnode project. Use when you need to configure analytics (Google Analytics, Clarity), tag management (GTM), customer support (Intercom), marketing pixels (Facebook Pixel, Hotjar), or visitor tracking (Koala) on a documentation site. |
| `HASHNODE_UPDATE_DOCUMENTATION_LINK` | Update Documentation Link | Tool to update an existing link within a Hashnode documentation guide. Use when you need to modify the label or URL of a documentation link. Requires the project ID, guide slug, link ID, and updated label (URL is optional). |
| `HASHNODE_UPDATE_DOCUMENTATION_PROJECT_SUBDOMAIN` | Hashnode: Update Documentation Project Subdomain | Tool to update the subdomain of a Hashnode documentation project. Use when you need to change the subdomain (e.g., from 'old-docs.hashnode.dev' to 'new-docs.hashnode.dev') for a documentation project. |
| `HASHNODE_UPDATE_DOCUMENTATION_SECTION` | Hashnode Update Documentation Section | Tool to update a section in a Hashnode documentation guide. Use when you need to modify the label, slug, or visibility of an existing documentation section. |
| `HASHNODE_UPDATE_POST` | Hashnode Update Post | Tool to update an existing Hashnode post via the updatePost mutation. Use when you need to modify the title, content, tags, or other attributes of an already published or drafted post. |
| `HASHNODE_UPDATE_REPLY` | Hashnode Update Reply | Tool to update a reply. Use when editing an existing reply to a comment after confirming the comment and reply IDs. |
| `HASHNODE_VERIFY_DOCUMENTATION_PROJECT_CUSTOM_DOMAIN` | Hashnode Verify Documentation Project Custom Domain | Tool to verify a custom domain for a Hashnode documentation project. Use when you need to confirm DNS configuration and activate a custom domain that was previously added to the project. |

## Supported Triggers

None listed.

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

The Hashnode MCP server is an implementation of the Model Context Protocol that connects your AI agent to Hashnode. It provides structured and secure access so your agent can perform Hashnode 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 Hashnode 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=["hashnode"],
)

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 Hashnode 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=["hashnode"],
)

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

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

## Conclusion

You've successfully integrated Hashnode with the Google ADK through Composio's MCP Tool Router. Your agent can now interact with Hashnode using natural language commands.
Key takeaways:
- The Tool Router approach dynamically routes requests to the appropriate Hashnode 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 Hashnode MCP Agent with another framework

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

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- [GitHub](https://composio.dev/toolkits/github) - GitHub is a code hosting platform for version control and collaborative software development. It streamlines project management, code review, and team workflows in one place.
- [Ably](https://composio.dev/toolkits/ably) - Ably is a real-time messaging platform for live chat and data sync in modern apps. It offers global scale and rock-solid reliability for seamless, instant experiences.
- [Abuselpdb](https://composio.dev/toolkits/abuselpdb) - Abuselpdb is a central database for reporting and checking IPs linked to malicious online activity. Use it to quickly identify and report suspicious or abusive IP addresses.
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- [Apiverve](https://composio.dev/toolkits/apiverve) - Apiverve delivers a suite of powerful APIs that simplify integration for developers. It's designed for reliability and scalability so you can build faster, smarter applications without the integration headache.
- [Appcircle](https://composio.dev/toolkits/appcircle) - Appcircle is an enterprise-grade mobile CI/CD platform for building, testing, and publishing mobile apps. It streamlines mobile DevOps so teams ship faster and with more confidence.
- [Appdrag](https://composio.dev/toolkits/appdrag) - Appdrag is a cloud platform for building websites, APIs, and databases with drag-and-drop tools and code editing. It accelerates development and iteration by combining hosting, database management, and low-code features in one place.
- [Appveyor](https://composio.dev/toolkits/appveyor) - AppVeyor is a cloud-based continuous integration service for building, testing, and deploying applications. It helps developers automate and streamline their software delivery pipelines.
- [Backendless](https://composio.dev/toolkits/backendless) - Backendless is a backend-as-a-service platform for mobile and web apps, offering database, file storage, user authentication, and APIs. It helps developers ship scalable applications faster without managing server infrastructure.
- [Baserow](https://composio.dev/toolkits/baserow) - Baserow is an open-source no-code database platform for building collaborative data apps. It makes it easy for teams to organize data and automate workflows without writing code.
- [Bench](https://composio.dev/toolkits/bench) - Bench is a benchmarking tool for automated performance measurement and analysis. It helps you quickly evaluate, compare, and track your systems or workflows.
- [Better stack](https://composio.dev/toolkits/better_stack) - Better Stack is a monitoring, logging, and incident management solution for apps and services. It helps teams ensure application reliability and performance with real-time insights.
- [Bitbucket](https://composio.dev/toolkits/bitbucket) - Bitbucket is a Git-based code hosting and collaboration platform for teams. It enables secure repository management and streamlined code reviews.
- [Blazemeter](https://composio.dev/toolkits/blazemeter) - Blazemeter is a continuous testing platform for web and mobile app performance. It empowers teams to automate and analyze large-scale tests with ease.
- [Blocknative](https://composio.dev/toolkits/blocknative) - Blocknative delivers real-time mempool monitoring and transaction management for public blockchains. Instantly track pending transactions and optimize blockchain interactions with live data.

## Frequently Asked Questions

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

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

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

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

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[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)