# Rust Error Handling > Guide for Rust error handling. Use when working with Result, Option, the ? operator, or implementing custom error types. Use when this capability is needed. - Skill: `tomevault-io/rust-error-handling-5` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/rust-error-handling-5` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/rust-error-handling-5/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/rust-error-handling-5 --- # Rust Error Handling Result, Option, error propagation, and custom error types. ## When to Use This Skill Activate when: - Returning and handling Result types - Working with Option for optional values - Using the ? operator for error propagation - Implementing custom error types with Display and From For Result, Option, ? operator, and custom error type patterns, see `references/error-handling.md`. --- > Source: [vinnie357/claude-skills](https://github.com/vinnie357/claude-skills) — distributed by [TomeVault](https://tomevault.io).