
Connect vCard Syntax Validator to ChatGPT, Claude and Gemini
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. Verify and extract contact data from VCF strings instantly.
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.

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.
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.
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.
01-03
3 capabilities in this set.
Part of 3 available through vCard Syntax Validator.
- 01
Extract property values
This capability pulls clean key-value pairs from a valid vCard. It automatically strips away parameters to leave you with just the raw data.
- 02
Validate parameter syntax
This capability checks the integrity of parameters attached to specific properties. It catches malformed syntax before it causes errors.
- 03
Parse vcard structure
This capability validates the fundamental structure of a vCard string. It checks for proper encapsulation and ensures required identity fields are present.
Real work
What teams actually run
Bulk Contact Validation
Run a batch of VCF strings through the agent to find broken files.
Data Cleaning
Use the agent to strip parameters and get pure contact values for a database.
Import Pre-checks
Verify the structural integrity of a vCard before attempting to upload it to a CRM.
Format Conversion
Check if a vCard string adheres to version 4.0 standards before processing.
One connector, every AI
vCard Syntax 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.
Claude
ChatGPT
Gemini
Perplexity
Grok
Microsoft Copilot
Cursor
VS Code
Windsurf
JetBrains
Cline
LangChain
Vercel AI SDK
Lovable
Z.ai
Raycast
Qwen Code
Kimi Code
Le ChatBuilding your own app? The connector is yours to use.
You don't need a client to put vCard Syntax 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
781ms average. Fast in production.
vCard Syntax Validator is checked daily against the live service.
- Fastest day
- 720ms
- Slowest day
- 945ms
- 14-day trend
- Slowing+31%
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 vCard Syntax Validator, so you can see the experience inside your AI.
It does not authenticate your account with vCard Syntax Validator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
vCard Syntax Validator Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_Fecqvnaj75LdaOSL4PqxsMBkd9AGUt9UsT4n1425/mcpClaude 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 — vCard Syntax Validator capabilities are ready to use.
{
"mcpServers": {
"vcard-syntax-validator-mcp": {
"url": "https://edge.vinkius.com/vk_preview_Fecqvnaj75LdaOSL4PqxsMBkd9AGUt9UsT4n1425/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 vCard Syntax Validator in Claude and other AIs
Who it's for
Built for the work vCard Syntax Validator owners hand off.
This MCP is built for anyone managing contact data pipelines or automating contact imports.
- 01
Data Engineers
They hand off messy VCF files to the agent to validate before ingestion.
- 02
CRM Administrators
They use the agent to check the integrity of contact imports.
- 03
Software Developers
They use the capability to debug contact parsing logic in their applications.
FAQ
Questions vCard Syntax Validator owners ask.
- 01
Which vCard versions does this MCP support?
It supports versions 2.1, 3.0, and 4.0.
- 02
Can this MCP extract specific fields like email addresses?
Yes, you can use the extraction capability to pull specific key-value pairs from a valid vCard string.
- 03
How does it handle malformed parameters?
The validate_parameter_syntax capability specifically detects and identifies malformed property parameters.
- 04
Does it check for required fields?
Yes, the structural parsing capability verifies that required identity fields like FN and N are present.
- 05
What clients can I use this with?
You can use this with any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code.
- 06
Which vCard versions are supported?
The server supports vCard versions 2.1, 3.0, and 4.0.
- 07
How can I check if a vCard is missing required fields?
You can use the parse_vcard_structure capability, which returns a list of missingRequiredProperties if identity fields like FN or N are absent.
- 08
Can I extract specific values like phone numbers?
Yes, use the extract_property_values capability and specify the targetKey (e.g., 'TEL') to get the clean values.
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Connect vCard Syntax Validator to Claude, Cursor, ChatGPT & more
