Compare and Diff assemblies from different sources. Useful for determining what changes are introduced across versions, and if any are breaking.

csharp dotnet nuget assembly breaking-changes dotnet-tool api-diff

• Updated Nov 12, 2026
• C#

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.

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• Updated Nov 9, 2026
• JavaScript

Fast API compatibility reports for Go projects

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• Updated Oct 19, 2026
• Go

Compare OpenAPI specs and find potential affected JS, TS, and Python callers. Offline, zero runtime dependencies, with a one-command demo.

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• Updated Sep 19, 2026
• Python

Git diff for your API responses.

api-contract api-contracts api-diff api-contract-testing

• Updated Aug 12, 2026
• Go

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

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• Updated Aug 16, 2026
• Swift

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

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• Updated Nov 12, 2026
• JavaScript

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.

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• Updated Nov 10, 2026
• Python

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

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• Updated Sep 26, 2026
• Python

Office.js CDN monitor: sees new builds rolling out across edges and diffs the public API surface

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• Updated Nov 12, 2026
• JavaScript

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

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• Updated May 6, 2026
• TypeScript

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

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• Updated Jun 19, 2026
• TypeScript

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• Updated Oct 28, 2026
• Shell

Distill a Swift package to its public API: a compact interface to read, snapshots to query and diff.

swift cli swift-package-manager api-documentation developer-tools public-api ai-agents symbol-graph api-diff

• Updated Oct 27, 2026
• Swift

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

json-schema openapi openapi3 api-versioning breaking-changes api-compatibility api-diff

• Updated Oct 17, 2026
• C#

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

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• Updated Sep 12, 2026
• TypeScript

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

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• Updated Sep 10, 2026
• Python

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

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• Updated Oct 21, 2026
• Python

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

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• Updated Oct 27, 2026
• Python

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

typescript ci openapi api-versioning breaking-changes api-diff

• Updated Aug 14, 2026
• TypeScript