Api Contract Validator

Last 30 days

Uptime

100%

Response time

67 ms typical, 67 ms slowest 5%

Last check

4 h ago

Next check

in 3 h

How to call it

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "api-contract-validator": {
      "type": "http",
      "url": "https://api.lazy-mac.com/api-contract-validator/mcp"
    }
  }
}

5 tools

• validate_openapi_spec

  Validate an OpenAPI 3.x or AsyncAPI spec JSON. Returns structural errors, missing required fields, and warnings.

• diff_request_response

  Compare a real HTTP request/response against an OpenAPI spec contract. Returns per-field violations.

• lint_api_schema

  Lint an API spec for quality and best practice compliance. Rules: operation-id-kebab-case, response-success-required, tags-defined, no-empty-description, security-defined.

• generate_mock_from_spec

  Generate mock response data from an OpenAPI spec. Uses examples, defaults, formats, and type heuristics.

• check_breaking_changes

  Compare two OpenAPI spec versions to detect breaking changes: removed paths/operations, new required parameters, removed response codes, operationId renames.

Security scan

• No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

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