What can this MCP validate in an ICS file?

It validates structural integrity, component nesting, mandatory properties like UID, and date-time syntax.

How does it help with debugging?

It provides the exact line numbers where syntax errors or missing properties are detected.

Which clients can use this MCP?

You can use it with any MCP-compatible client including Claude, Cursor, Windsurf, and VS Code.

Does it check for mandatory fields?

Yes, it can verify that specific components contain required fields such as UID and DTSTAMP.

Can it find date formatting errors?

Yes, the check_date_time_syntax capability specifically scans for temporal formatting errors.

What component types are supported?

The validator specifically supports VEVENT, VTODO, and VJOURNAL components.

How can I find where an error occurred in my ICS file?

The capabilities return the exact line number where the structural, property, or syntax error was detected.

Does this capability check for mandatory properties?

Yes, you can use verify_component_properties to ensure that mandatory properties like UID and DTSTAMP are present in your components.

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Connect Icalendar Syntax Validator to ChatGPT and Claude

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Stop debugging broken ICS files by hand.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 3 capabilities

We ship only the actions that matter.

Capability set01 / 01

01-03

3 capabilities in this set.

Part of 3 available through iCalendar Validator.

01
Check date time syntax
This capability scans your document to ensure all date and time properties follow strict iCalendar temporal formatting rules.
02
Validate icalendar structure
Use this to check the high-level structural integrity and nesting of your iCalendar string.
03
Verify component properties
This capability validates that mandatory properties exist within specific component blocks like VEVENT or VTODO.

Real work

What teams actually run

Debugging Generated ICS Files

When your code generates a calendar file that won't import, let the AI find the syntax error.

Data Cleaning

Use the agent to scrub and verify the validity of imported calendar datasets.

API Response Validation

Verify that calendar data returned from an external API follows the correct iCalendar structure.

Automated Testing

Integrate the MCP into your workflow to check the structural integrity of calendar exports.

One connector, every AI

iCalendar Validator works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put iCalendar Validator to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

886ms average. Fast in production.

iCalendar Validator is checked daily against the live service.

Daily averagePeak 990ms

Oct 3Today

Fastest day: 646ms
Slowest day: 990ms
14-day trend: Improving-10%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 3 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of iCalendar Validator, so you can see the experience inside your AI.

It does not authenticate your account with iCalendar Validator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

iCalendar Validator Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_wLIP6aYDkdlrYy0W5yucP1fzZOl4WMJGEmctEZrd/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — iCalendar Validator capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "icalendar-syntax-validator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_wLIP6aYDkdlrYy0W5yucP1fzZOl4WMJGEmctEZrd/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up iCalendar Validator in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work iCalendar Validator owners hand off.

This MCP is built for anyone working with calendar data automation and file generation.

01
Software Developers
Hand off raw ICS strings to the AI to debug formatting errors in generated calendar files.
02
Data Engineers
Use the agent to validate large batches of calendar data before ingestion.
03
Automation Specialists
Let the AI verify that automated scheduling outputs meet the iCalendar standard.

FAQ

Questions iCalendar Validator owners ask.

01
What can this MCP validate in an ICS file?
It validates structural integrity, component nesting, mandatory properties like UID, and date-time syntax.
02
How does it help with debugging?
It provides the exact line numbers where syntax errors or missing properties are detected.
03
Which clients can use this MCP?
You can use it with any MCP-compatible client including Claude, Cursor, Windsurf, and VS Code.
04
Does it check for mandatory fields?
Yes, it can verify that specific components contain required fields such as UID and DTSTAMP.
05
Can it find date formatting errors?
Yes, the check_date_time_syntax capability specifically scans for temporal formatting errors.
06
What component types are supported?
The validator specifically supports VEVENT, VTODO, and VJOURNAL components.
07
How can I find where an error occurred in my ICS file?
The capabilities return the exact line number where the structural, property, or syntax error was detected.
08
Does this capability check for mandatory properties?
Yes, you can use verify_component_properties to ensure that mandatory properties like UID and DTSTAMP are present in your components.

Explore

More in Productivity

Connect iCalendar Validator to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-03

Check date time syntax

Validate icalendar structure

Verify component properties

What teams actually run

Debugging Generated ICS Files

Data Cleaning

API Response Validation

Automated Testing

Building your own app? The connector is yours to use.

iCalendar Validator Connector

Claude Desktop

Software Developers

Data Engineers

Automation Specialists

What can this MCP validate in an ICS file?

How does it help with debugging?

Which clients can use this MCP?

Does it check for mandatory fields?

Can it find date formatting errors?

What component types are supported?

How can I find where an error occurred in my ICS file?

Does this capability check for mandatory properties?

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