rfc9457

Unified error responses for Quarkus REST APIs via Problem Details for HTTP APIs (RFC9457 & RFC7807)

Prevent OpenAPI Generator from redefining your Java contract. Contract-preserving client generation for Spring Boot — available on Maven Central.

Spring integration for library implementing RFC7807 (and RFC9457)

Next-generation HTTP router for Go 1.25+ with type-safe handlers, RFC 9457 errors, and built-in OpenAPI generation. Minimal dependencies, blazing performance.

Стандартное тело HTTP-ошибки application/problem+json: построение, разбор и данные ответа

Reusable RFC 9457 Problem Details for HTTP APIs. OpenAPI schemas and examples ready to $ref, plus Python and TypeScript packages.

Kotlin Multiplatform library for RFC 9457 / RFC 7807 Problem Details

Symfony 8 bundle for JSON-first API form handling — controller traits, API form types, data transformers, Doctrine validation, and RFC 9457 problem details error responses

RFC 9457 Problem Details for HTTP APIs のGo実装。Clean Architecture + DDD、依存ゼロ、86.9%テストカバレッジ。

A comprehensive ASP.NET Core error handling library that provides standardized error responses, automatic exception filtering, and business rule notification processing with built-in localization support.

A RFC 9457 Problem Details for HTTP APIs implementation.

Minimal, opinionated Result pattern library for modern .NET APIs with RFC 9457 ProblemDetails, structured logging, and first-class Minimal API support.

Spring Boot starter library providing enhanced RFC 9457 ProblemDetail exception handling with field-level validation error information for WebMVC and WebFlux applications.

TypeScript-first RFC 9457 compliant HTTP error handling for Node.js. Zero dependencies, fully typed, framework-agnostic.

A Fastify plugin for standardized, RFC 9457 compliant error responses (Problem Details) in HTTP APIs.

A curated, owned, grounded Spectral ruleset for RFC 9457 Problem Details for HTTP APIs. An API Commons tool.

Declarative Parameter Negotiation & Action Gate — a stateless, omnichannel middleware that decouples input choreography (GUI/CUI) and security challenges from a single business endpoint via constraint satisfaction. RFC 9457 + JSON Schema. TypeScript/Hono.

RFC 9457 problem details for ASP.NET Core: declared once, thrown from anywhere, documented in OpenAPI, and explained to the developer who receives them.

In this demo project, I share a new approach to handling error codes in your applications, along with a new method for logging the ErrorCodes and the class and line number where the error occurred.

Source-first error contract governance with catalog, RFC 9457/OpenAPI drift, baselines, and runtime correlation.