# Error Handling

> Guide for Rust error handling. Use when working with Result, Option, the ? operator, implementing custom error types, or composing errors with thiserror and anyhow.

- **Type:** Skill
- **Install:** `agentstack add skill-vinnie357-claude-skills-error-handling`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [vinnie357](https://agentstack.voostack.com/s/vinnie357)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [vinnie357](https://github.com/vinnie357)
- **Source:** https://github.com/vinnie357/claude-skills/tree/main/plugins/languages/rust/skills/error-handling

## Install

```sh
agentstack add skill-vinnie357-claude-skills-error-handling
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# 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
- Composing error enums with thiserror or adding caller context with anyhow

For Result, Option, ? operator, custom error type patterns, and the thiserror/anyhow ecosystem crates, see `references/error-handling.md`.

## Anti-fabrication

This skill follows `core:anti-fabrication`. Every claim about `Result`/`Option` behavior,
the `?` operator, and the `thiserror`/`anyhow` crate APIs is verified against the official
documentation and crates.io versions cited in `sources.md` — not inferred from generic
familiarity with the ecosystem. Before asserting an error-handling pattern or crate API this
skill and its references do not cover, check the installed crate version's docs.rs page
rather than guessing.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [vinnie357](https://github.com/vinnie357)
- **Source:** [vinnie357/claude-skills](https://github.com/vinnie357/claude-skills)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-vinnie357-claude-skills-error-handling
- Seller: https://agentstack.voostack.com/s/vinnie357
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.