Download PDFMarkdown Version
ClaudeChatGPTPerplexityGeminiMicrosoft CopilotRaycastMeta AIGrokZ.aiQwenKimi
DeepSeekMistralCursorVS CodeWindsurfJetBrainsClineLovableVercel AI SDKLangChain

Use API Contract Diff Checker with your AI.

Connect your account once and let the AI you already use work with it, without building another integration. Detect breaking and additive changes in OpenAPI and GraphQL schemas.

Included with plan

Ask AI about this Connector

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.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Complete set · 3 capabilities

The complete API Contract Diff Checker capability set.

These are the exact actions your AI can choose when you ask it to work with API Contract Diff Checker.

Capability set01 / 01

01-03

3 capabilities in this set.

Part of 3 available through API Contract Diff Checker.

  1. 01

    Diff graphql

    Compares two GraphQL Schema Definition Language (SDL) strings to identify breaking and additive changes

  2. 02

    Diff openapi

    Detects structural differences and compatibility impacts between two OpenAPI specification documents

  3. 03

    Evaluate version bump

    Analyzes a collection of identified changes to recommend a Semantic Versioning increment

Observed, not estimated

630ms average. Fast in production.

API Contract Diff Checker is checked daily against the live service.

Daily averagePeak 821ms
Aug 25Today
Fastest day
506ms
Slowest day
821ms
14-day trend
Slowing+5%

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 API Contract Diff Checker, so you can see the experience inside your AI.

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

API Contract Diff Checker Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_YNoFUtgqNHWnECjvlVZlbBc74OvhGVwRY5w7zSGv/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — API Contract Diff Checker capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "api-contract-diff-checker-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_YNoFUtgqNHWnECjvlVZlbBc74OvhGVwRY5w7zSGv/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

FAQ

Questions API Contract Diff Checker owners ask.

  • 01

    What types of API contracts can I compare?

    You can compare OpenAPI specifications and GraphQL Schema Definition Language (SDL) strings.

  • 02

    How does the capability recommend a version bump?

    The evaluate_version_bump capability analyzes detected changes. A MAJOR bump is recommended for breaking changes, MINOR for additive changes, and PATCH for informational updates.

  • 03

    Can I detect type narrowing in OpenAPI?

    Yes, diff_openapi identifies type narrowing (e.g., changing a string to a specific regex pattern) as a breaking change.

Explore

More in Developer Tools

Suggestions