
Connect Vigenere Cipher Engine 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. Perform deterministic text encryption while preserving your original formatting.
Developed, maintained, and hosted by Vinkius.
MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED
Waiting for input…
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 Vigenère Cipher Engine.
- 01
Get cipher summary
This capability provides metadata about how strong or characteristic a specific keyword is for the cipher.
- 02
Transform text
This capability performs the actual Vigenère encryption or decryption on your text using a provided keyword.
- 03
Validate keyword
This capability checks if a keyword meets the necessary requirements for the Vigenère cipher.
Real work
What teams actually run
Cryptographic Testing
Use the engine to verify how different keyword lengths affect the resulting ciphertext.
Text Obfuscation
Hide specific strings within a document while keeping the sentence structure recognizable.
Educational Simulations
Have your agent demonstrate how polyalphabetic ciphers work by encoding and decoding messages in real time.
One connector, every AI
Vigenère Cipher Engine 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 Vigenère Cipher Engine 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
838ms average. Fast in production.
Vigenère Cipher Engine is checked daily against the live service.
- Fastest day
- 678ms
- Slowest day
- 1006ms
- 14-day trend
- Improving-13%
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 Vigenère Cipher Engine, so you can see the experience inside your AI.
It does not authenticate your account with Vigenère Cipher Engine. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
Vigenère Cipher Engine Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_xOiuGclokPyNip0kcRrEJGiAhIPVwskYLVB3HQos/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 — Vigenère Cipher Engine capabilities are ready to use.
{
"mcpServers": {
"vigenere-cipher-engine-mcp": {
"url": "https://edge.vinkius.com/vk_preview_xOiuGclokPyNip0kcRrEJGiAhIPVwskYLVB3HQos/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 Vigenère Cipher Engine in Claude and other AIs
Who it's for
Built for the work Vigenère Cipher Engine owners hand off.
This is built for anyone working with classical cryptography or text obfuscation within an AI workflow.
- 01
Security Researchers
They hand off text strings to the agent to test polyalphabetic substitution methods.
- 02
Software Developers
They use the capability to verify how their own encryption logic compares to a standard engine.
- 03
Data Analysts
They use it to quickly obfuscate specific text fields within a dataset.
FAQ
Questions Vigenère Cipher Engine owners ask.
- 01
Does this MCP change the capitalization of my text?
No, the engine is designed to preserve the original casing of your text.
- 02
What happens to spaces and punctuation during encryption?
The engine ignores non-alphabetic characters, meaning spaces and punctuation remain in their original positions.
- 03
Can I use numbers as keywords?
No, the keyword must consist entirely of alphabetic characters to be valid.
- 04
Which AI clients can use this MCP?
Any MCP-compatible client like Claude, Cursor, or Windsurf can use these capabilities.
- 05
How do I know if my keyword is strong?
You can use the get_cipher_summary capability to retrieve metadata about your keyword's characteristics.
- 06
Does this capability preserve my original text formatting?
Yes, the transform_text capability preserves all spaces, punctuation, and casing from your original input.
- 07
How can I check if my keyword is valid?
You can use the validate_keyword capability to ensure your keyword consists only of alphabetic characters.
- 08
What information can I get about my keyword?
The get_cipher_summary capability provides the length, number of unique letters, and pattern strength of your keyword.
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Connect Vigenère Cipher Engine to Claude, Cursor, ChatGPT & more
