Bring Time Management
to OpenAI Agents SDK
Create your Vinkius account to connect Fantastical to OpenAI Agents SDK and start using all 10 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.
Compatible with every major AI agent and IDE
What is the 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.
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
How it works
- Subscribe to this server
- Enter your Fantastical API Key (found in your Flexibits Account Hub under Integrations)
- Start managing your calendar from Claude, Cursor, or any MCP-compatible client
Who is this for?
- Busy Professionals — manage multiple calendar providers and create events using natural language without leaving the chat interface
- Executive Assistants — coordinate meeting proposals and manage booking openings for teams using natural conversation
- Developers — test and debug calendar integrations and verify natural language parsing logic in real-time
- Power Users — audit unified schedules and manage reminders across different services through a single AI assistant
Built-in capabilities (10)
Fantastical excels at parsing natural language — "Lunch with Bob tomorrow at noon". Create a new event in Fantastical using natural language parsing
They sync with Apple Reminders or Todoist depending on your setup. Create a new reminder in Fantastical
Delete a Fantastical event permanently
Retrieve full details of a Fantastical event by ID
Get details of a specific Fantastical Opening
Fantastical unifies calendars from multiple providers into one view. List all calendars connected to Fantastical
Requires start and end dates. List all calendar events in Fantastical within a date range
List all Openings (scheduling pages) in Fantastical
Returns proposal titles, suggested times, responses, and finalized slots. List all Proposals in Fantastical
Changes sync to the underlying calendar provider. Update an existing Fantastical event
Why OpenAI Agents SDK?
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.
- —
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 in OpenAI Agents SDK
Why run Fantastical with Vinkius?
The Fantastical connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 10 tools are ready to work instantly without any complex setup.
You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.

* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.




Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect Fantastical using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Fantastical and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Fantastical to OpenAI Agents SDK through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
Fantastical for OpenAI Agents SDK
Every request between OpenAI Agents SDK and Fantastical is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
Can my agent create events using natural language phrases like in the Fantastical app?
Yes. Use the 'create_event' tool. Fantastical's engine is designed to parse phrases like 'Lunch with Bob at 1pm next Tuesday'. The agent will transmit the string and return the structured event data flawlessly.
How do I see my available scheduling links (Openings) via chat?
Use the 'list_openings' tool. Your agent will retrieve all your active scheduling pages, providing the booking link URLs and duration settings so you can share them with others easily.
Can I suggest multiple meeting times to someone through the agent?
Absolutely. Use the 'list_proposals' tool to monitor existing suggestions. Fantastical Proposals allow you to offer several slots to attendees, and your agent can help you track their responses and finalize the event.
How does the OpenAI Agents SDK connect to MCP?
Use 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?
Yes. Pass a list of 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?
Yes. The SDK supports SSE and Streamable HTTP transports, both of which work natively with Vinkius.
MCPServerStreamableHttp not found
Ensure you have the latest version: pip install --upgrade openai-agents
Agent not calling tools
Make sure your prompt explicitly references the task the tools can help with.
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