How to Use the Notion Calendar (formerly Cron) MCP in LlamaIndex

Q: Can LlamaIndex use this MCP Server to prevent Notion Calendar (formerly Cron) scheduling hallucinations?

Yes. By indexing the output of getfreebusy, the agent knows your exact availability before proposing times. It relies on real API data rather than trying to remember your schedule from past chat history.

Q: Can I filter which calendars the agent can index?

Yes. Use listcalendars to get a list of your calendar IDs, then configure your indexing pipeline to only pull data from specific targets. This keeps personal or irrelevant calendars out of your vector store.

Index Notion Calendar (formerly Cron) events directly into your LlamaIndex vector stores for context-aware RAG.

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Connect Notion Calendar (formerly Cron) MCP to LlamaIndex

Create your Vinkius account to connect Notion Calendar (formerly Cron) to LlamaIndex and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Notion Calendar (formerly Cron) with LlamaIndex

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Index Live Calendar Data via MCP Server

Ground your agent's responses in your actual schedule instead of letting it guess. By calling `list_events`, LlamaIndex pulls real-time calendar data directly into your local vector index. This turns your schedule into searchable context for retrieval-augmented generation. You can query your past meetings or upcoming commitments using semantic search. The agent reads the parsed output of `get_event` to answer complex questions about who you met with and when.

Semantic Availability Searches

Stop manually parsing calendar grids. LlamaIndex uses `get_free_busy` to extract your active time blocks and index them as queryable nodes. Your agent can search this index to find open slots that fit complex criteria. Once it identifies a window, it calls `get_availability` to confirm the host's status. The agent can then execute `create_event` to secure the block, updating your index immediately after.

Smart Profile and Link Retrieval

Find the right booking link using natural language queries. The agent uses `get_scheduling_links` to index your active booking options. When a user asks for a quick chat, the agent retrieves the most relevant link from the index. It also references `get_profile` to match timezone settings. If the user needs to move a meeting, the agent uses `update_event` to shift the block while updating the local index to match.

Setup guide

Set up Notion Calendar (formerly Cron) MCP in LlamaIndex

Prerequisites

Python 3.10+ installed
llama-index-tools-mcp package
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run pip install llama-index-tools-mcp llama-index-llms-openai. The MCP tools package provides BasicMCPClient and McpToolSpec.
2

Connect with BasicMCPClient
Point BasicMCPClient to your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. Supports SSE and Streamable HTTP transports.
3

Convert to LlamaIndex tools
Call mcp_tool_spec.to_tool_list_async() to convert all Notion Calendar (formerly Cron) MCP tools into native FunctionTool objects that any LlamaIndex agent can use.
4

Run with any LLM
Create a FunctionAgent with the tools and your preferred LLM. Swap OpenAI for Anthropic, Gemini, or any LlamaIndex-supported provider.

agent.py

from llama_index.tools.mcp import BasicMCPClient, McpToolSpec
from llama_index.core.agent.workflow import FunctionAgent
from llama_index.llms.openai import OpenAI

# Connect to the MCP
mcp_client = BasicMCPClient(
    "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
)
mcp_tool_spec = McpToolSpec(client=mcp_client)

# Convert MCP tools to LlamaIndex tools
tools = await mcp_tool_spec.to_tool_list_async()

# Create and run the agent
agent = FunctionAgent(
    tools=tools,
    llm=OpenAI(model="gpt-4o"),
    system_prompt="You have access to Notion Calendar (formerly Cron) tools.",
)
response = await agent.run("List recent Notion Calendar (formerly Cron) data")

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Notion Calendar. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Notion Calendar (formerly Cron) MCP in LlamaIndex

Use the MCP tool spec adapter to connect your Vinkius MCP Server endpoint to LlamaIndex. You can then call `list_events` to retrieve your calendar data and load it into a vector store. This makes your schedule searchable via standard query engines.

Yes. By indexing the output of `get_free_busy`, the agent knows your exact availability before proposing times. It relies on real API data rather than trying to remember your schedule from past chat history.

Initialize the basic client with your Vinkius URL, then wrap it in `McpToolSpec`. Call `to_tool_list_async()` to convert the tools and pass them to your `FunctionAgent` for direct execution.

Yes. Use `list_calendars` to get a list of your calendar IDs, then configure your indexing pipeline to only pull data from specific targets. This keeps personal or irrelevant calendars out of your vector store.

Your free/busy slots, profile settings, and event details are processed in memory and sent directly to your configured vector store. Vinkius runs the server in an isolated sandbox, ensuring your profile settings and calendar data are never stored or exposed to external third parties.

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