# OpenAPI Breaking Change & Contract Release Gate Studio v3.0 (ProofNexa) > Deterministic CI/CD Release Gate, Bump.sh / GitHub PR-Style Visual Diff Studio, GitHub Action (`rotenkus-dot/openapi-breaking-change-release-gate@v1`), RapidAPI Service, and Apify Store Actor for catching breaking OpenAPI 3.0 / 3.1 contract changes before deployment. ## Live Endpoints & Interactive Studio - **Interactive Web Studio v3.0**: https://api-contract-release-gate.vercel.app - **Compare Endpoint**: `POST https://api-contract-release-gate.vercel.app/v1/compare` - **Health Endpoint**: `GET https://api-contract-release-gate.vercel.app/health` - **OpenAPI 3.0 Spec**: `GET https://api-contract-release-gate.vercel.app/openapi.json` ## Multi-Channel Integrations - **GitHub Action**: `uses: rotenkus-dot/openapi-breaking-change-release-gate@v1` (https://github.com/rotenkus-dot/openapi-breaking-change-release-gate) - **Zero-Config 15-Tool MCP Server**: `npx -y github:rotenkus-dot/b2b-lead-quant-mcp` (https://github.com/rotenkus-dot/b2b-lead-quant-mcp) - **Apify Store Actor**: https://apify.com/invaluable_rondeau/openapi-breaking-change-auditor - **RapidAPI Hub**: https://rapidapi.com/proofnexa/api/openapi-breaking-change-and-contract-release-gate ## Sister Platform: ProofNexa Terminal v3.0 (Quant FX/Gold Lab, MQL5 EA Auditor, LLMO 4-Gauge Scanner & B2B Security) - **Main Studio**: https://quant-b2b-risk-gate-api.vercel.app - **MQL5 EA Fraud & Monte Carlo Auditor**: https://quant-b2b-risk-gate-api.vercel.app/quant - **LLMO / AI Search Readiness 4-Gauge Scanner**: https://quant-b2b-risk-gate-api.vercel.app/llmo - **B2B Domain SPF/DMARC/RDAP & Bulk Email Gate**: https://quant-b2b-risk-gate-api.vercel.app/b2b-security - **Full 38-Tool Portfolio Catalog**: https://quant-b2b-risk-gate-api.vercel.app/catalog - **All 15 Apify Store Actors**: https://apify.com/invaluable_rondeau