# How to integrate Writer MCP with Google ADK

```json
{
  "title": "How to integrate Writer MCP with Google ADK",
  "toolkit": "Writer",
  "toolkit_slug": "writer",
  "framework": "Google ADK",
  "framework_slug": "google-adk",
  "url": "https://composio.dev/toolkits/writer/framework/google-adk",
  "markdown_url": "https://composio.dev/toolkits/writer/framework/google-adk.md",
  "updated_at": "2026-05-12T10:30:46.134Z"
}
```

## Introduction

This guide walks you through connecting Writer to Google ADK using the Composio tool router. By the end, you'll have a working Writer agent that can summarize key findings from uploaded medical notes, generate chat responses using enterprise llm, list all knowledge graphs in your workspace through natural language commands.
This guide will help you understand how to give your Google ADK agent real control over a Writer account through Composio's Writer MCP server.
Before we dive in, let's take a quick look at the key ideas and tools involved.

## Also integrate Writer with

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

## TL;DR

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

The Writer MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Writer account. It provides structured and secure access to your Writer AI platform, so your agent can perform actions like querying knowledge graphs, generating chat completions, extracting medical concepts, managing files, and orchestrating enterprise AI workflows on your behalf.
- Conversational AI and content generation: Use your agent to generate chat-based completions and natural language responses using Writer's advanced LLMs.
- Enterprise knowledge graph management: Create, retrieve, list, or delete knowledge graphs to organize and access structured knowledge within your organization.
- Automated data extraction from clinical text: Extract medical entities and standardized codes (like SNOMED CT) from unstructured clinical or healthcare text for downstream analysis.
- Application and model discovery: List available no-code agent applications and LLM models to streamline how your agent selects tools for specific tasks.
- File management and inspection: Retrieve and review uploaded files, filter by attributes, and manage your enterprise content for further AI-driven actions.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `WRITER_ADD_FILE_TO_GRAPH` | Add File to Knowledge Graph | Tool to add a file to a knowledge graph for indexing and retrieval. Use when you need to add an uploaded file to an existing knowledge graph for RAG applications. |
| `WRITER_ANALYZE_IMAGES` | Analyze Images | Tool to analyze images using Writer's vision capabilities. Use when you need image understanding, text extraction from images, or visual question answering. Images must be uploaded via POST /v1/files before analysis. |
| `WRITER_ASK_QUESTION_TO_KNOWLEDGE_GRAPH` | Ask Question to Knowledge Graph | Tool to send a question to the knowledge graph and retrieve the answer. Use after defining your question and optional context. |
| `WRITER_CHAT_COMPLETION` | Chat Completion | Tool to generate chat-based completions. Use when you need conversational AI responses; call after assembling system and user messages. |
| `WRITER_CREATE_KNOWLEDGE_GRAPH` | Create Knowledge Graph | Tool to create a new knowledge graph. Use when you need to create an empty graph that files can be added to. |
| `WRITER_DELETE_FILE` | Delete File | Tool to delete a file by its ID. Use when you need to permanently remove a file from Writer with no recovery option available. |
| `WRITER_DELETE_GRAPH` | Delete Graph | Tool to delete a knowledge graph by its ID. Use when you need to remove a graph after confirming its identifier. |
| `WRITER_DETECT_AI_CONTENT` | Detect AI Content | Tool to detect whether content was generated by AI. Returns a classification label and confidence score indicating the likelihood of AI-generated content. Use when you need to verify content authenticity or identify AI-written text. |
| `WRITER_DOWNLOAD_FILE` | Download File | Tool to download the binary content of a file. Use when you need to retrieve file data from the Writer platform. The response contains the file in its original format. |
| `WRITER_GET_FILE` | Get File | Tool to retrieve detailed information about a specific file by its ID. Use when you need to check a file's metadata, processing status, or associated knowledge graphs. |
| `WRITER_LIST_APPLICATIONS` | List Applications | Tool to list all no-code agent applications. Use when you need to retrieve all registered applications. |
| `WRITER_LIST_FILES` | List Files | Tool to list all uploaded files. Use when you need to retrieve a paginated set of user files, optionally filtered by status, graph, or type. Use after uploading files to inspect available files. |
| `WRITER_LIST_GRAPHS` | List Knowledge Graphs | Tool to retrieve a list of knowledge graphs. Use when you need an overview of existing graphs. |
| `WRITER_LIST_MODELS` | List Models | Tool to list all available language models. Use when you need to discover which models can be used for completions. |
| `WRITER_MEDICAL_COMPREHEND` | Medical Text Comprehension | Tool to extract medical entities and concepts from unstructured clinical text. Use when you need to label medical text with standardized codes such as SNOMED CT. |
| `WRITER_PARSE_PDF` | Parse PDF | Tool to parse and extract text content from a previously uploaded PDF file. Use when you need to convert PDF documents to text or markdown format for further processing. |
| `WRITER_REMOVE_FILE_FROM_GRAPH` | Remove File From Graph | Tool to remove a file from a Knowledge Graph. Use when you need to unlink a specific file from a graph by providing both graph and file identifiers. |
| `WRITER_RETRIEVE_GRAPH` | Retrieve Knowledge Graph | Tool to retrieve a knowledge graph by its ID. Use when you need details of an existing graph. |
| `WRITER_TEXT_GENERATION` | Text Generation | Tool to generate text based on a given prompt. Use when you need model-driven completions after crafting a prompt. |
| `WRITER_TRANSLATE_TEXT` | Translate Text | Tool to translate text from one language to another with support for formality, length control, and profanity masking. Use when you need to convert text between different languages. |
| `WRITER_UPDATE_GRAPH` | Update Knowledge Graph | Tool to update an existing knowledge graph. Use after confirming the graph_id. Specify at least one of name or description to modify. |
| `WRITER_UPLOAD_FILE` | Upload File | Tool to upload a file to Writer. Use when you need to add files for Knowledge Graphs, PDF parsing, or other file-based operations. Files can be associated with Knowledge Graphs for RAG applications. |
| `WRITER_WEB_SEARCH` | Web Search | Tool to perform a web search. Use when you need relevant web page results for a given query. |

## Supported Triggers

None listed.

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

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

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 Writer 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=["writer"],
)

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

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

## Conclusion

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

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

## Related Toolkits

- [Composio](https://composio.dev/toolkits/composio) - Composio is an integration platform that connects AI agents with hundreds of business tools. It streamlines authentication and lets you trigger actions across services—no custom code needed.
- [Composio search](https://composio.dev/toolkits/composio_search) - Composio search is a unified web search toolkit spanning travel, e-commerce, news, financial markets, images, and more. It lets you and your apps tap into up-to-date web data from a single, easy-to-integrate service.
- [Perplexityai](https://composio.dev/toolkits/perplexityai) - Perplexityai delivers natural, conversational AI models for generating human-like text. Instantly get context-aware, high-quality responses for chat, search, or complex workflows.
- [Browser tool](https://composio.dev/toolkits/browser_tool) - Browser tool is a virtual browser integration that lets AI agents interact with the web programmatically. It enables automated browsing, scraping, and action-taking from any AI workflow.
- [Ai ml api](https://composio.dev/toolkits/ai_ml_api) - Ai ml api is a suite of AI/ML models for natural language and image tasks. It provides fast, scalable access to advanced AI capabilities for your apps and workflows.
- [Aivoov](https://composio.dev/toolkits/aivoov) - Aivoov is an AI-powered text-to-speech platform offering 1,000+ voices in over 150 languages. Instantly turn written content into natural, human-like audio for any application.
- [All images ai](https://composio.dev/toolkits/all_images_ai) - All-Images.ai is an AI-powered image generation and management platform. It helps you create, search, and organize images effortlessly with advanced AI capabilities.
- [Anthropic administrator](https://composio.dev/toolkits/anthropic_administrator) - Anthropic administrator is an API for managing Anthropic organizational resources like members, workspaces, and API keys. It helps you automate admin tasks and streamline resource management across your Anthropic organization.
- [Api labz](https://composio.dev/toolkits/api_labz) - Api labz is a platform offering a suite of AI-driven APIs and workflow tools. It helps developers automate tasks and build smarter, more efficient applications.
- [Apipie ai](https://composio.dev/toolkits/apipie_ai) - Apipie ai is an AI model aggregator offering a single API for accessing top AI models from multiple providers. It helps developers build cost-efficient, latency-optimized AI solutions without juggling multiple integrations.
- [Astica ai](https://composio.dev/toolkits/astica_ai) - Astica ai provides APIs for computer vision, NLP, and voice synthesis. Integrate advanced AI features into your app with a single API key.
- [Bigml](https://composio.dev/toolkits/bigml) - BigML is a machine learning platform that lets you build, train, and deploy predictive models from your data. Its intuitive interface and robust API make machine learning accessible and efficient.
- [Botbaba](https://composio.dev/toolkits/botbaba) - Botbaba is a platform for building, managing, and deploying conversational AI chatbots across messaging channels. It streamlines chatbot automation, making it easier to integrate AI into customer interactions.
- [Botpress](https://composio.dev/toolkits/botpress) - Botpress is an open-source platform for building, deploying, and managing chatbots. It helps teams automate conversations and deliver rich, interactive messaging experiences.
- [Chatbotkit](https://composio.dev/toolkits/chatbotkit) - Chatbotkit is a platform for building and managing AI-powered chatbots using robust APIs and SDKs. It lets you easily add conversational AI to your apps for better user engagement.
- [Cody](https://composio.dev/toolkits/cody) - Cody is an AI assistant built for businesses, trained on your company's knowledge and data. It delivers instant answers and insights, tailored for your team.
- [Context7 MCP](https://composio.dev/toolkits/context7_mcp) - Context7 MCP delivers live, version-specific code docs and examples right from the source. It helps developers and AI agents instantly retrieve authoritative programming info—no more out-of-date docs.
- [Customgpt](https://composio.dev/toolkits/customgpt) - CustomGPT.ai lets you build and deploy chatbots tailored to your own data and business needs. Get precise and context-aware AI conversations without writing code.
- [Datarobot](https://composio.dev/toolkits/datarobot) - Datarobot is a machine learning platform that automates model development, deployment, and monitoring. It empowers organizations to quickly gain predictive insights from large datasets.
- [Deepgram](https://composio.dev/toolkits/deepgram) - Deepgram is an AI-powered speech recognition platform for accurate audio transcription and understanding. It enables fast, scalable speech-to-text with advanced audio intelligence features.

## Frequently Asked Questions

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

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

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

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

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