Fantastical MCP Server for OpenAI Agents SDK 10 tools — connect in under 2 minutes
The OpenAI Agents SDK enables production-grade agent workflows in Python. Connect Fantastical through Vinkius and your agents gain typed, auto-discovered tools with built-in guardrails. no manual schema definitions required.
ASK AI ABOUT THIS MCP SERVER
Vinkius supports streamable HTTP and SSE.
import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerStreamableHttp
async def main():
# Your Vinkius token. get it at cloud.vinkius.com
async with MCPServerStreamableHttp(
url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
) as mcp_server:
agent = Agent(
name="Fantastical Assistant",
instructions=(
"You help users interact with Fantastical. "
"You have access to 10 tools."
),
mcp_servers=[mcp_server],
)
result = await Runner.run(
agent, "List all available tools from Fantastical"
)
print(result.final_output)
asyncio.run(main())
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
About Fantastical MCP Server
Connect your Fantastical account to any AI agent and take full control of your unified calendar management and advanced scheduling through natural conversation.
The OpenAI Agents SDK auto-discovers all 10 tools from Fantastical through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns. chain multiple agents where one queries Fantastical, another analyzes results, and a third generates reports, all orchestrated through Vinkius.
What you can do
- Natural Language Event Orchestration — Leverage Fantastical's elite parsing engine to create new events by commanding simple phrases like 'Lunch with Bob tomorrow at noon' natively
- Unified Calendar Auditing — Retrieve all scheduled events across Google, iCloud, Exchange, and Microsoft 365 in a single structural view within your chat
- Scheduling Openings — List and manage your shareable booking links where others can schedule time with you based on your real-time availability flawlessly
- Meeting Proposals — Suggest multiple time slots to attendees and track responses to finalize meeting times without manual back-and-forth
- Reminder Management — Create and audit task-like items with due dates that sync with Apple Reminders or Todoist natively alongside your calendar
- Calendar Oversight — Enumerate all connected providers and manage structural layouts identifying specific account colors and active statuses securely
- Event Modification — Update existing events by transmitting logical segments like titles, times, locations, or notes synchronously across all providers
The Fantastical MCP Server exposes 10 tools through the Vinkius. Connect it to OpenAI Agents SDK in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
How to Connect Fantastical to OpenAI Agents SDK via MCP
Follow these steps to integrate the Fantastical MCP Server with OpenAI Agents SDK.
Install the SDK
Run pip install openai-agents in your Python environment
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token from cloud.vinkius.com
Run the script
Save the code above and run it: python agent.py
Explore tools
The agent will automatically discover 10 tools from Fantastical
Why Use OpenAI Agents SDK with the Fantastical MCP Server
OpenAI Agents SDK provides unique advantages when paired with Fantastical through the Model Context Protocol.
Native MCP integration via `MCPServerSse`, pass the URL and the SDK auto-discovers all tools with full type safety
Built-in guardrails, tracing, and handoff patterns let you build production-grade agents without reinventing safety infrastructure
Lightweight and composable: chain multiple agents and MCP servers in a single pipeline with minimal boilerplate
First-party OpenAI support ensures optimal compatibility with GPT models for tool calling and structured output
Fantastical + OpenAI Agents SDK Use Cases
Practical scenarios where OpenAI Agents SDK combined with the Fantastical MCP Server delivers measurable value.
Automated workflows: build agents that query Fantastical, process the data, and trigger follow-up actions autonomously
Multi-agent orchestration: create specialist agents. one queries Fantastical, another analyzes results, a third generates reports
Data enrichment pipelines: stream data through Fantastical tools and transform it with OpenAI models in a single async loop
Customer support bots: agents query Fantastical to resolve tickets, look up records, and update statuses without human intervention
Fantastical MCP Tools for OpenAI Agents SDK (10)
These 10 tools become available when you connect Fantastical to OpenAI Agents SDK via MCP:
create_event
Fantastical excels at parsing natural language — "Lunch with Bob tomorrow at noon". Create a new event in Fantastical using natural language parsing
create_reminder
They sync with Apple Reminders or Todoist depending on your setup. Create a new reminder in Fantastical
delete_event
Delete a Fantastical event permanently
get_event
Retrieve full details of a Fantastical event by ID
get_opening
Get details of a specific Fantastical Opening
list_calendars
Fantastical unifies calendars from multiple providers into one view. List all calendars connected to Fantastical
list_events
Requires start and end dates. List all calendar events in Fantastical within a date range
list_openings
List all Openings (scheduling pages) in Fantastical
list_proposals
Returns proposal titles, suggested times, responses, and finalized slots. List all Proposals in Fantastical
update_event
Changes sync to the underlying calendar provider. Update an existing Fantastical event
Example Prompts for Fantastical in OpenAI Agents SDK
Ready-to-use prompts you can give your OpenAI Agents SDK agent to start working with Fantastical immediately.
"Create event: 'Deep Work session tomorrow from 9am to 11am'"
"List my events for this week"
"What are my active scheduling Openings?"
Troubleshooting Fantastical MCP Server with OpenAI Agents SDK
Common issues when connecting Fantastical to OpenAI Agents SDK through the Vinkius, and how to resolve them.
MCPServerStreamableHttp not found
pip install --upgrade openai-agentsAgent not calling tools
Fantastical + OpenAI Agents SDK FAQ
Common questions about integrating Fantastical MCP Server with OpenAI Agents SDK.
How does the OpenAI Agents SDK connect to MCP?
MCPServerSse(url=...) to create a server connection. The SDK auto-discovers all tools and makes them available to your agent with full type information.Can I use multiple MCP servers in one agent?
MCPServerSse instances to the agent constructor. The agent can use tools from all connected servers within a single run.Does the SDK support streaming responses?
Connect Fantastical with your favorite client
Step-by-step setup guides for every MCP-compatible client and framework:
Anthropic's native desktop app for Claude with built-in MCP support.
AI-first code editor with integrated LLM-powered coding assistance.
GitHub Copilot in VS Code with Agent mode and MCP support.
Purpose-built IDE for agentic AI coding workflows.
Autonomous AI coding agent that runs inside VS Code.
Anthropic's agentic CLI for terminal-first development.
Python SDK for building production-grade OpenAI agent workflows.
Google's framework for building production AI agents.
Type-safe agent development for Python with first-class MCP support.
TypeScript toolkit for building AI-powered web applications.
TypeScript-native agent framework for modern web stacks.
Python framework for orchestrating collaborative AI agent crews.
Leading Python framework for composable LLM applications.
Data-aware AI agent framework for structured and unstructured sources.
Microsoft's framework for multi-agent collaborative conversations.
Connect Fantastical to OpenAI Agents SDK
Get your token, paste the configuration, and start using 10 tools in under 2 minutes. No API key management needed.