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axum-errors-handling

Convert Axum handler and middleware errors into safe HTTP responses.

Updated May 20, 2026
Search Tags:#error handling#thiserror#axum#anyhow#tower middleware#IntoResponse#HandleErrorLayer
One-click install
npx skills add https://github.com/Impertio-Studio/Axum-Claude-Skill-Package --skill axum-errors-handling
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: axum-errors-handling
Source: https://github.com/Impertio-Studio/Axum-Claude-Skill-Package/tree/main/skills/source/axum-errors/axum-errors-handling
Command: npx skills add https://github.com/Impertio-Studio/Axum-Claude-Skill-Package --skill axum-errors-handling

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill prevents incorrect or unsafe error handling in Axum by ensuring handlers and fallible middleware always produce valid HTTP responses with the right status codes and without leaking internal error details.

Core Features & Use Cases

  • Type-system driven error responses: converts handler failures into responses by requiring Result<T, E> where E: IntoResponse, avoiding unwrap/expect/panic in request paths.
  • Structured and safe error modeling: builds an AppError enum with IntoResponse plus From impls (optionally using thiserror), mapping known failures to distinct status codes like 404 and 422.
  • Fallback and middleware adaptation: uses an anyhow catch-all pattern via a local newtype to keep orphan rules intact, and applies HandleError / HandleErrorLayer for fallible tower::Service middleware such as timeouts.

Quick Start

Use this skill to design an AppError enum and implement IntoResponse and From so your Axum handler can safely use the ? operator and return the correct status and client-safe body.

Frequently Asked Questions about axum-errors-handling

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I return correct HTTP responses for Axum errors without panicking?▼

Axum error handling requires returning `Result<T, E>` where `E` implements `IntoResponse`, converting handler failures into valid HTTP responses with correct status codes instead of using unwrap or expect.

How do I use thiserror and anyhow together for Axum error handling?▼

Use `thiserror` to model a custom `AppError` enum with `IntoResponse` and `From` impls, while applying an `anyhow` catch-all pattern via a local newtype to preserve orphan rules and handle unexpected failures.

How do I handle errors from fallible tower middleware like timeouts in Axum?▼

Apply `HandleError` or `HandleErrorLayer` to fallible `tower::Service` middleware when the middleware error type is not `Infallible`, ensuring middleware failures convert into proper HTTP responses.

How do I map Axum request validation and database failures to distinct HTTP status codes?▼

Build a structured `AppError` enum implementing `IntoResponse` with `From` conversions, mapping known failures like request parsing or database issues to distinct status codes such as 404 and 422.

Why does my Axum handler leak internal error text to the client?▼

Unsafe error text leakage occurs when errors are not explicitly modeled; implementing a custom `AppError` enum with `IntoResponse` ensures only client-safe body text and correct status codes are returned.

Can I use the ? operator in Axum handlers to return custom error responses?▼

Yes, implementing `From` conversions for your custom error type allows the `?` operator to automatically transform internal failures into proper HTTP responses via the `IntoResponse` trait.

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