• CRITICAL
  • STYLE
  • VERSION
  • HUMAN

How to validate REST API contracts with your AI

Connect your agent to the API Design Prover to audit your specifications. It checks your work against standard patterns so you don't ship broken designs.

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Short answer

How can I use AI to check my API design?

Your AI uses the validate_api_design tool to scan your specification for errors in verb usage, versioning logic, and response structures. You'll get a clear report on where your design deviates from industry standards.

Where every issue lands.

The audit outcomes

The AI categorizes every finding into specific buckets based on the severity and type of the design flaw.

CRITICAL

Breaking contract errors

The AI identifies structural flaws that will break client integrations. You get a list of specific paths that fail validation.

STYLE

Verb and naming issues

The tool flags inconsistent HTTP methods or non-standard naming conventions. This ensures your API feels intuitive to developers.

VERSION

Versioning mismatches

It checks if your versioning strategy is applied consistently across all endpoints. You'll see where your versioning logic is missing or broken.

HUMAN

Manual design decisions

The AI flags ambiguous patterns that require your judgment. You decide if a specific design choice is intentional or a mistake.

The workflow

What your AI does when the spec arrives.

The AI acts as a rigorous technical reviewer, running your design through a specific validation sequence.

  1. Parse the specification

    Your agent reads your OpenAPI or JSON schema to understand the full structure of your endpoints.

    validate_api_design

  2. Check HTTP methods

    The AI verifies that you are using the correct verbs for the intended actions, like using POST instead of GET for resource creation.

    validate_api_design

  3. Audit response shapes

    It compares your defined response bodies against expected industry patterns to ensure consistency.

    validate_api_design

  4. Verify versioning

    The agent checks that your versioning headers or URL paths follow a logical and consistent pattern.

    validate_api_design

Try it

Copy these to start.

Use these prompts to kick off the validation process.

Starting points

Swap out the bracketed text for your actual file paths or repository links.

API Design Prover Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_qg8XbvSmxEnaSpHzTf8C0mUG7OY2r5bZJfEFviZ0/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 Design Prover capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "api-design-prover-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_qg8XbvSmxEnaSpHzTf8C0mUG7OY2r5bZJfEFviZ0/mcp"
    }
  }
}
Copy into chat04

  • Validate the API design in my local file ./specs/v1/auth.yaml.

  • Check the design of the user management endpoints in my GitHub repo.

  • Run a contract validation on the service definition in my current workspace.

  • Does my API design in this spec follow standard RESTful verb patterns?

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect API Design Prover once, then ask.

Just link the MCP to your preferred client. Your credentials stay encrypted, and you can start auditing specs immediately.

Connect API Design Prover to your AI

FAQ

How this task behaves

  • 01

    Can the AI fix my API design automatically?

    No. The AI provides the verdict and identifies the errors, but you must manually update your specification files.

  • 02

    Does it work with any API format?

    It is designed for standard RESTful specifications like OpenAPI and JSON schema.

  • 03

    Will the AI change my files?

    No. The tool only reads your files to perform the validation. It cannot write or overwrite your code.

  • 04

    Can I use this with Cursor or Claude?

    Yes, as long as you are using an MCP-compatible client, you can use this connector.

  • 05

    Does it check for security vulnerabilities?

    No. This tool focuses on design standards, verb usage, and response shapes, not security or penetration testing.

  • More questions about API Design Prover? The Connector page answers them. See everything the API Design Prover Connector can do

Connect API Design Prover to Claude, Cursor, ChatGPT & more