How to integrate Clockify MCP with Google ADK

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Introduction

This guide walks you through connecting Clockify to Google ADK using the Composio tool router. By the end, you'll have a working Clockify agent that can list all your active workspaces, add a new client to marketing workspace, show all users on design team workspace through natural language commands.

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

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

Also integrate Clockify with

TL;DR

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

The Clockify MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Clockify account. It provides structured and secure access to your team's time tracking data, so your agent can perform actions like managing clients, handling workspace users, setting up webhooks, and retrieving workspace details on your behalf.

  • Workspace user management: Let your agent list all users in a workspace, filter users by advanced criteria, or find team managers for more efficient team organization.
  • Client creation and deletion: Easily create new clients or remove existing ones from your workspace, streamlining project onboarding and cleanup.
  • Webhook automation: Enable your agent to create, delete, and manage webhooks for real-time notifications and integrations with other tools.
  • Workspace overview and navigation: Retrieve a list of all workspaces you belong to, empowering your agent to access and organize time tracking across multiple teams or projects.
  • Addon and webhook token management: Generate new webhook tokens and list all addon webhooks, ensuring secure and automated integrations with third-party services.

Supported Tools & Triggers

Tools
Add User to GroupTool to add a user to a user group in a Clockify workspace.
Create ClientTool to add a new client to a workspace.
Create New ProjectTool to create a new project in a Clockify workspace.
Create Shared ReportTool to create a shared report in Clockify.
Create TaskTool to add a new task to a project in Clockify.
Create Templates On WorkspaceTool to create templates on a Clockify workspace.
Create Time EntryTool to create a new time entry in a Clockify workspace.
Create User GroupTool to create a new user group in a workspace.
Create User Time EntryTool to create a time entry for another user in a Clockify workspace.
Create WebhookTool to create a new webhook in a workspace.
Create WorkspaceTool to create a new workspace in Clockify.
Delete ClientPermanently deletes a client from a Clockify workspace.
Delete ProjectTool to delete a project from a workspace.
Delete Shared ReportTool to delete a shared report from a workspace by ID.
Delete TagTool to delete a tag from a Clockify workspace.
Delete TaskTool to delete a task from a project in Clockify.
Delete TemplateTool to delete a template from a Clockify workspace.
Delete Time EntryTool to delete a time entry from a workspace by ID.
Delete User GroupTool to delete a user group from a workspace.
Delete User Time EntriesTool to delete multiple time entries for a user in a workspace.
Delete WebhookTool to delete a webhook from a workspace.
Duplicate Time EntryTool to duplicate an existing time entry in a Clockify workspace.
Filter Workspace UsersTool to filter users in a workspace by advanced criteria.
Find User's Team ManagersRetrieves the list of team managers assigned to a specific user in a Clockify workspace.
Generate Detailed ReportTool to generate a detailed time entry report with filtering and pagination.
Generate Expense ReportTool to generate a detailed expense report for a Clockify workspace.
Generate New Webhook TokenTool to generate a new webhook token.
Generate Summary ReportTool to generate a summary report for time entries in a Clockify workspace.
Generate Weekly ReportTool to generate a weekly time entry report for a workspace with grouped data.
Get All Addon WebhooksTool to list all webhooks for an addon in a workspace.
Get All My WorkspacesTool to list all workspaces the user belongs to.
Get All WebhooksTool to list all webhooks in a workspace.
Get Client By IDRetrieves detailed information about a specific client in a Clockify workspace.
Get ClientsTool to list clients in a workspace.
Get Created EntitiesTool to retrieve created entities within a workspace (Experimental).
Get Currently Logged In User InfoTool to retrieve info about the authenticated user.
Get Deleted EntitiesTool to retrieve information about entities deleted within a date range (Experimental API).
Get HolidaysTool to retrieve all holidays for a workspace.
Get Holidays In PeriodTool to retrieve holidays in a specific period.
Get In Progress Time EntriesTool to retrieve all currently running time entries in a workspace.
Get member's profileTool to get a member's profile in a workspace.
Get ProjectTool to retrieve detailed information about a specific project by ID.
Get ProjectsTool to list projects in a workspace with filtering and pagination.
Get Shared ReportTool to retrieve a shared report by ID from Clockify.
Get Shared ReportsTool to retrieve all shared reports in a workspace.
Get Tag By IDTool to retrieve detailed information about a specific tag by ID in a Clockify workspace.
Get TagsTool to find and list tags in a workspace.
Get TaskRetrieves detailed information about a specific task in a Clockify project.
Get TasksTool to find all tasks on a specific project in a workspace.
Get Templates On WorkspaceTool to list all templates in a workspace.
Get Time EntriesTool to retrieve historical time entries for a user in a workspace with filters.
Get Time EntryTool to retrieve a specific time entry by ID from a workspace.
Get Updated EntitiesTool to retrieve entities that have been updated in a workspace (Experimental).
Get User GroupsTool to find all user groups in a workspace.
Get Webhook By IDRetrieves detailed information about a specific webhook in a Clockify workspace.
Get Webhook LogsTool to retrieve webhook logs for a specific webhook.
Get Workspace InfoRetrieves detailed information about a specific Clockify workspace.
List AssignmentsTool to retrieve all scheduling assignments in a workspace.
Remove User From GroupTool to remove a user from a group in Clockify.
Stop User TimerTool to stop a currently running timer for a user in a workspace.
Update ClientTool to update an existing client in a Clockify workspace.
Update ProjectTool to update an existing project in a Clockify workspace.
Update Project MembershipsTool to update project memberships in Clockify.
Update Project User Hourly RateTool to update a project user's billable rate.
Update Shared ReportTool to update an existing shared report in Clockify.
Update TagTool to update a tag in a Clockify workspace.
Update TaskTool to update an existing task on a project in Clockify.
Update Time EntriesTool to bulk update multiple time entries in a Clockify workspace.
Update Time EntryTool to update an existing time entry in a Clockify workspace.
Update User GroupTool to update an existing user group in a workspace.
Update User Hourly RateTool to update a user's hourly rate in a Clockify workspace.
Update WebhookTool to update a webhook in a workspace.
Update Workspace Hourly RateTool to update the workspace billable hourly rate.

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

What is Composio SDK?

Composio's Composio SDK helps agents find the right tools for a task at runtime. You can plug in multiple toolkits (like Gmail, HubSpot, and GitHub), and the agent will identify the relevant app and action to complete multi-step workflows. This can reduce token usage and improve the reliability of tool calls. Read more here: Getting started with Composio SDK

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

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

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 Clockify 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=["clockify"],
)

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 Clockify 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 Clockify 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=["clockify"],
)

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

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

Conclusion

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

Key takeaways:

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

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FAQ

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

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

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

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

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