
Connect Tool Interface Contract Validator to your AI
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 contract drift and ensure your capability schemas actually work.
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 Tool Interface Contract Validator.
- 01
Generate test suite
This capability creates a set of stress-test inputs based on your provided schema. It helps you preview the specific boundary values that will be used during testing.
- 02
Validate contract
This capability runs the actual validation against your capability implementation. It checks if the real-world execution matches the declared input and output schemas.
- 03
Analyze compliance report
This capability processes the results of a validation run. It categorizes failures so you can quickly see if you have type mismatches or missing fields.
Real work
What teams actually run
Preventing Agent Failures
Use this to ensure a capability's output format stays consistent so your agent doesn't crash when parsing data.
Interface Stress Testing
Generate edge-case inputs to see how your capability handles unexpected or extreme values.
Schema Compliance Audits
Run regular checks to confirm that updated capability code still adheres to the original contract.
Debugging Capability Errors
Analyze compliance reports to find exactly why a capability is failing to meet its specification.
One connector, every AI
Tool Interface Contract 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 Tool Interface Contract 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
945ms average. Fast in production.
Tool Interface Contract Validator is checked daily against the live service.
- Fastest day
- 683ms
- Slowest day
- 1104ms
- 14-day trend
- Stable+3%
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 Tool Interface Contract Validator, so you can see the experience inside your AI.
It does not authenticate your account with Tool Interface Contract Validator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
Tool Interface Contract Validator Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_51fH8i3RG8gHcmJrIRC3JWYn79gq3qKzdx39r97g/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 — Tool Interface Contract Validator capabilities are ready to use.
{
"mcpServers": {
"tool-interface-contract-validator-mcp": {
"url": "https://edge.vinkius.com/vk_preview_51fH8i3RG8gHcmJrIRC3JWYn79gq3qKzdx39r97g/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 Tool Interface Contract Validator in Claude and other AIs
Who it's for
Built for the work Tool Interface Contract Validator owners hand off.
This MCP is built for developers building reliable agentic systems and capability-using workflows.
- 01
AI Engineers
They use this to ensure the capabilities they build for agents don't break during execution.
- 02
Backend Developers
They use this to validate that their API implementations match the schemas exposed to AI clients.
- 03
QA Automation Engineers
They use this to automate the testing of capability interfaces using fuzzing techniques.
FAQ
Questions Tool Interface Contract Validator owners ask.
- 01
What is contract drift?
Contract drift happens when a capability's actual behavior or data format changes and no longer matches its declared schema, causing agents to fail.
- 02
How does the fuzz testing work?
The MCP uses deterministic, schema-aware fuzz testing to push boundary values and type transitions against your capability to find errors.
- 03
What kind of errors does this MCP find?
It identifies type mismatches, missing required fields, and unexpected extra fields in capability inputs and outputs.
- 04
Can I use this with any AI client?
Yes, it works with any MCP-compatible client like Claude, Cursor, or Windsurf.
- 05
How do I see why a capability failed?
You can use the analyze_compliance_report capability to categorize and view the specific reasons for any validation failures.
- 06
How does the validation work?
The engine uses deterministic schema-aware fuzzing to generate test cases based on your inputSchema, specifically targeting boundary values and type transitions.
- 07
Can I see the test cases before running validation?
Yes, you can use the generate_test_suite capability to preview the specific test inputs that will be used to stress-test your capability's contract.
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Connect Tool Interface Contract Validator to Claude, Cursor, ChatGPT & more
