How to integrate Cronfree Time Scheduler MCP with Autogen

This guide walks you through connecting Cronfree Time Scheduler to AutoGen using the Composio tool router. By the end, you'll have a working Cronfree Time Scheduler agent that can create weekday webhook for daily reports, remove outdated billing reminder schedule, schedule timezone-aware monthly cleanup webhook through natural language commands. This guide will help you understand how to give your AutoGen agent real control over a Cronfree Time Scheduler account through Composio's Cronfree Time Scheduler MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved.

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Api Key

Cronfree Time Scheduler is an API-based scheduler for recurring webhook calls. Use it to create and remove timezone-aware schedules without running cron.

2 Tools

Introduction

This guide walks you through connecting Cronfree Time Scheduler to AutoGen using the Composio tool router. By the end, you'll have a working Cronfree Time Scheduler agent that can create weekday webhook for daily reports, remove outdated billing reminder schedule, schedule timezone-aware monthly cleanup webhook through natural language commands.

This guide will help you understand how to give your AutoGen agent real control over a Cronfree Time Scheduler account through Composio's Cronfree Time Scheduler MCP server.

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

Also integrate Cronfree Time Scheduler with

OpenAI Agents SDKClaude Agent SDKClaude CodeClaude CoworkCodexOpenClawHermesCLIGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAI

TL;DR

Here's what you'll learn:
  • Get and set up your OpenAI and Composio API keys
  • Install the required dependencies for Autogen and Composio
  • Initialize Composio and create a Tool Router session for Cronfree Time Scheduler
  • Wire that MCP URL into Autogen using McpWorkbench and StreamableHttpServerParams
  • Configure an Autogen AssistantAgent that can call Cronfree Time Scheduler tools
  • Run a live chat loop where you ask the agent to perform Cronfree Time Scheduler operations

What is AutoGen?

Autogen is a framework for building multi-agent conversational AI systems from Microsoft. It enables you to create agents that can collaborate, use tools, and maintain complex workflows.

Key features include:

  • Multi-Agent Systems: Build collaborative agent workflows
  • MCP Workbench: Native support for Model Context Protocol tools
  • Streaming HTTP: Connect to external services through streamable HTTP
  • AssistantAgent: Pre-built agent class for tool-using assistants

What is the Cronfree Time Scheduler MCP server, and what's possible with it?

The Cronfree Time Scheduler MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Cronfree Time Scheduler account. It provides structured and secure access to your recurring webhook schedules, so your agent can create schedules, choose precise delivery times, apply timezones, and remove schedules on your behalf.

  • Recurring webhook scheduling: Have your agent create a recurring schedule that sends requests to your chosen webhook.
  • Flexible calendar timing: Instruct your agent to schedule webhook calls by weekday, month, day of the month, hour, and minute.
  • Timezone-aware delivery: Let the agent apply an IANA timezone so each recurring webhook runs at the intended local time.
  • Schedule removal: Direct your agent to remove the recurring schedule associated with a webhook when it is no longer needed.

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

Step by step08 STEPS
1

Prerequisites

You will need:

  • A Composio API key
  • An OpenAI API key (used by Autogen's OpenAIChatCompletionClient)
  • A Cronfree Time Scheduler account you can connect to Composio
  • Some basic familiarity with Autogen and Python async
2

Getting API Keys for OpenAI and Composio

OpenAI API Key
  • Go to the OpenAI dashboard and create an API key. You'll need credits to use the models, or you can connect to another model provider.
  • Keep the API key safe.
Composio API Key
  • Log in to the Composio dashboard.
  • Navigate to your API settings and generate a new API key.
  • Store this key securely as you'll need it for authentication.
3

Install dependencies

bash
pip install composio python-dotenv
pip install autogen-agentchat autogen-ext-openai autogen-ext-tools

Install Composio, Autogen extensions, and dotenv.

What's happening:

  • composio connects your agent to Cronfree Time Scheduler via MCP
  • autogen-agentchat provides the AssistantAgent class
  • autogen-ext-openai provides the OpenAI model client
  • autogen-ext-tools provides MCP workbench support

4

Set up environment variables

bash
COMPOSIO_API_KEY=your-composio-api-key
OPENAI_API_KEY=your-openai-api-key
USER_ID=your-user-identifier@example.com

Create a .env file in your project folder.

What's happening:

  • COMPOSIO_API_KEY is required to talk to Composio
  • OPENAI_API_KEY is used by Autogen's OpenAI client
  • USER_ID is how Composio identifies which user's Cronfree Time Scheduler connections to use
5

Import dependencies and create Tool Router session

python
import asyncio
import os
from dotenv import load_dotenv
from composio import Composio

from autogen_agentchat.agents import AssistantAgent
from autogen_ext.models.openai import OpenAIChatCompletionClient
from autogen_ext.tools.mcp import McpWorkbench, StreamableHttpServerParams

load_dotenv()

async def main():
    # Initialize Composio and create a Cronfree Time Scheduler session
    composio = Composio(api_key=os.getenv("COMPOSIO_API_KEY"))
    session = composio.create(
        user_id=os.getenv("USER_ID"),
        toolkits=["cronfree_time_scheduler"]
    )
    url = session.mcp.url
What's happening:
  • load_dotenv() reads your .env file
  • Composio(api_key=...) initializes the SDK
  • create(...) creates a Tool Router session that exposes Cronfree Time Scheduler tools
  • session.mcp.url is the MCP endpoint that Autogen will connect to
6

Configure MCP parameters for Autogen

python
# Configure MCP server parameters for Streamable HTTP
server_params = StreamableHttpServerParams(
    url=url,
    timeout=30.0,
    sse_read_timeout=300.0,
    terminate_on_close=True,
    headers={"x-api-key": os.getenv("COMPOSIO_API_KEY")}
)

Autogen expects parameters describing how to talk to the MCP server. That is what StreamableHttpServerParams is for.

What's happening:

  • url points to the Tool Router MCP endpoint from Composio
  • timeout is the HTTP timeout for requests
  • sse_read_timeout controls how long to wait when streaming responses
  • terminate_on_close=True cleans up the MCP server process when the workbench is closed
7

Create the model client and agent

python
# Create model client
model_client = OpenAIChatCompletionClient(
    model="gpt-5",
    api_key=os.getenv("OPENAI_API_KEY")
)

# Use McpWorkbench as context manager
async with McpWorkbench(server_params) as workbench:
    # Create Cronfree Time Scheduler assistant agent with MCP tools
    agent = AssistantAgent(
        name="cronfree_time_scheduler_assistant",
        description="An AI assistant that helps with Cronfree Time Scheduler operations.",
        model_client=model_client,
        workbench=workbench,
        model_client_stream=True,
        max_tool_iterations=10
    )

What's happening:

  • OpenAIChatCompletionClient wraps the OpenAI model for Autogen
  • McpWorkbench connects the agent to the MCP tools
  • AssistantAgent is configured with the Cronfree Time Scheduler tools from the workbench
8

Run the interactive chat loop

python
print("Chat started! Type 'exit' or 'quit' to end the conversation.\n")
print("Ask any Cronfree Time Scheduler related question or task to the agent.\n")

# Conversation loop
while True:
    user_input = input("You: ").strip()

    if user_input.lower() in ["exit", "quit", "bye"]:
        print("\nGoodbye!")
        break

    if not user_input:
        continue

    print("\nAgent is thinking...\n")

    # Run the agent with streaming
    try:
        response_text = ""
        async for message in agent.run_stream(task=user_input):
            if hasattr(message, "content") and message.content:
                response_text = message.content

        # Print the final response
        if response_text:
            print(f"Agent: {response_text}\n")
        else:
            print("Agent: I encountered an issue processing your request.\n")

    except Exception as e:
        print(f"Agent: Sorry, I encountered an error: {str(e)}\n")
What's happening:
  • The script prompts you in a loop with You:
  • Autogen passes your input to the model, which decides which Cronfree Time Scheduler tools to call via MCP
  • agent.run_stream(...) yields streaming messages as the agent thinks and calls tools
  • Typing exit, quit, or bye ends the loop

Complete Code

Here's the complete code to get you started with Cronfree Time Scheduler and AutoGen:

python
import asyncio
import os
from dotenv import load_dotenv
from composio import Composio

from autogen_agentchat.agents import AssistantAgent
from autogen_ext.models.openai import OpenAIChatCompletionClient
from autogen_ext.tools.mcp import McpWorkbench, StreamableHttpServerParams

load_dotenv()

async def main():
    # Initialize Composio and create a Cronfree Time Scheduler session
    composio = Composio(api_key=os.getenv("COMPOSIO_API_KEY"))
    session = composio.create(
        user_id=os.getenv("USER_ID"),
        toolkits=["cronfree_time_scheduler"]
    )
    url = session.mcp.url

    # Configure MCP server parameters for Streamable HTTP
    server_params = StreamableHttpServerParams(
        url=url,
        timeout=30.0,
        sse_read_timeout=300.0,
        terminate_on_close=True,
        headers={"x-api-key": os.getenv("COMPOSIO_API_KEY")}
    )

    # Create model client
    model_client = OpenAIChatCompletionClient(
        model="gpt-5",
        api_key=os.getenv("OPENAI_API_KEY")
    )

    # Use McpWorkbench as context manager
    async with McpWorkbench(server_params) as workbench:
        # Create Cronfree Time Scheduler assistant agent with MCP tools
        agent = AssistantAgent(
            name="cronfree_time_scheduler_assistant",
            description="An AI assistant that helps with Cronfree Time Scheduler operations.",
            model_client=model_client,
            workbench=workbench,
            model_client_stream=True,
            max_tool_iterations=10
        )

        print("Chat started! Type 'exit' or 'quit' to end the conversation.\n")
        print("Ask any Cronfree Time Scheduler related question or task to the agent.\n")

        # Conversation loop
        while True:
            user_input = input("You: ").strip()

            if user_input.lower() in ['exit', 'quit', 'bye']:
                print("\nGoodbye!")
                break

            if not user_input:
                continue

            print("\nAgent is thinking...\n")

            # Run the agent with streaming
            try:
                response_text = ""
                async for message in agent.run_stream(task=user_input):
                    if hasattr(message, 'content') and message.content:
                        response_text = message.content

                # Print the final response
                if response_text:
                    print(f"Agent: {response_text}\n")
                else:
                    print("Agent: I encountered an issue processing your request.\n")

            except Exception as e:
                print(f"Agent: Sorry, I encountered an error: {str(e)}\n")

if __name__ == "__main__":
    asyncio.run(main())

Conclusion

You now have an Autogen assistant wired into Cronfree Time Scheduler through Composio's Tool Router and MCP. From here you can:
  • Add more toolkits to the toolkits list, for example notion or hubspot
  • Refine the agent description to point it at specific workflows
  • Wrap this script behind a UI, Slack bot, or internal tool
Once the pattern is clear for Cronfree Time Scheduler, you can reuse the same structure for other MCP-enabled apps with minimal code changes.
TOOLS

Supported Tools

Every Cronfree Time Scheduler action and event your agent gets out of the box.

Create Recurring Webhook Schedule

Create a Cronfree schedule that repeatedly POSTs to a webhook URL at times selected by weekday, month, month-day, hour, minute, and IANA timezone.

Remove Recurring Webhook Schedule

Remove the Cronfree recurring schedule associated with a webhook URL.

FRAMEWORKS

How to build Cronfree Time Scheduler MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Cronfree Time Scheduler MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Cronfree Time Scheduler MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Cronfree Time Scheduler MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Cronfree Time Scheduler MCP with Claude Cowork

Codex logo

Codex

Use Cronfree Time Scheduler MCP with Codex

OpenClaw logo

OpenClaw

Use Cronfree Time Scheduler MCP with OpenClaw

Hermes logo

Hermes

Use Cronfree Time Scheduler MCP with Hermes

CLI logo

CLI

Use Cronfree Time Scheduler MCP with CLI

Google ADK logo

Google ADK

Use Cronfree Time Scheduler MCP with Google ADK

LangChain logo

LangChain

Use Cronfree Time Scheduler MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Cronfree Time Scheduler MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Cronfree Time Scheduler MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Cronfree Time Scheduler MCP with LlamaIndex

CrewAI logo

CrewAI

Use Cronfree Time Scheduler MCP with CrewAI

FAQ

Frequently asked questions

With a standalone Cronfree Time Scheduler MCP server, the agents and LLMs can only access a fixed set of Cronfree Time Scheduler tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Cronfree Time Scheduler and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Autogen 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 Cronfree Time Scheduler tools.

Yes, absolutely. You can configure which Cronfree Time Scheduler 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.

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 Cronfree Time Scheduler data and credentials are handled as safely as possible.

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Karan skipped his own birthday party to fix our critical issue. It was 10pm and he diverted his Waymo to help us instead. This really sets the bar — it shows the commitment you need when users rely on your software.

Harsha Gaddipati
Harsha Gaddipati
Co-founder, Slashy

A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it's immensely helped keep new users on the platform.

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Abhi Arya
Co-founder, Opennote

We chose Composio over Pipedream because it delivered depth where it mattered — niche tools and tricky edge cases other platforms simply ignored. That gave us confidence to scale without compromising.

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CEO, Zams

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down managing agent auth would have been a death sentence.

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Founder, Extra Thursday

Before Composio, adding tool integrations was slow and resource-intensive. Each one could take weeks of engineering time, and maintaining them meant constantly keeping up with API changes.

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Founder & CEO, SwarmZero

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

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