A closer look at “API Tools”, exactly as the source publishes it. Utilities for inspecting, debugging, and optimizing APIs. Includes request builders, response analyzers, and schema validators. Useful for developers working with REST, SOAP, or GraphQL. Try live demos — every app is for sale with full source code via the Nova Ecosystem Source Store
[ 📱 ContractGuard API ContractGuard API is a powerful developer tool designed to safeguard your API contracts by detecting breaking changes before they reach production. By comparing current and proposed OpenAPI specifications, it automatically identifies differences, classifies them as breaking, warning, or safe, and provides a detailed diff report. The tool also generates deterministic mock payloads based on new schemas, recommends semantic version bumps, and offers endpoint-level comparisons. With export options for JSON and Markdown, ContractGuard API streamlines API evolution, making it indispensable for teams practicing continuous integration and API-first development. The full version stays on the original page, which this listing opens directly.