hono-problem-details
JSON →RFC 9457 Problem Details middleware for Hono that standardizes error responses across routes. Current stable version is 0.5.0, released monthly with semantic versioning. Key differentiators: official Hono integrations for Zod, Valibot, Zod-OpenAPI, and Standard Schema; auto-instance population; localization support; zero runtime dependencies beyond Hono; edge-worker compatible. Alternatives require manual error shaping or lack standard compliance.
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Resources
API endpoints
full doc /v1/registry/hono-problem-details
compatibility /v1/registry/hono-problem-details/compatibility