api-diff

Fast API compatibility reports for Go projects

A macOS app and command line tool for finding out what's new in Apple's SDKs, release by release.

OpenAPI breaking change detection CLI | API contract testing | prevent API breaking changes in CI/CD

Swagger UI plugin that highlights API changes inline: added, deleted, and updated operations, parameters, responses, and schema properties are marked directly in the Swagger UI, without leaving the docs.

GitHub Action: catch breaking API changes on every PR. Posts severity-graded comments with migration guides. 28 detection types.

API contract governance in one tool: breaking-change rules, runtime drift detection, schema-driven fuzzing, traffic replay and performance budgets for OpenAPI, Swagger 2.0, AsyncAPI, GraphQL, gRPC, MCP tool manifests and WSDL.

API contract visualization tool that reconciles frontend intent, backend implementation, and runtime behavior — surfacing mismatches across your system boundaries.

🛡️ Automated API diffing and breaking-change detection for NestJS and Swagger.

CLI for detecting client-breaking changes between OpenAPI JSON contracts (3.x), with actionable CI and Markdown reports.

Live demo: Delimit Action catches 23 breaking changes across 27 detection types on a real PR.

Compare two OpenAPI 3 documents and categorize changes as breaking/non-breaking with JSON paths. Zero deps.

Offline API contract diff and replay toolkit for sanitized fixtures. Deterministic schemas, secret redaction, and field-level drift evidence.

Ready-to-use API monitoring configurations for Rumbliq — detect schema drift in third-party APIs

Fork, push, and see Delimit catch breaking API changes in CI. Try it in 2 minutes.

Git diff for API behavior — capture, compare, and detect breaking changes in JSON APIs.

Detect breaking API changes before production with deterministic JSON/API contract diffing, risk scoring, and optional AI impact analysis.

Rust CLI and GitHub Action for semantic public API breakage checks

Detects, classifies, and optionally summarizes breaking changes in OpenAPI/Swagger, GraphQL, and Protobuf/gRPC contracts using AI

Snapshot a Rust crate's public API, diff versions, classify breaking changes, suggest downstream fixes — heading toward an embedded contract ledger