Agent skill

Error Handling

by aiskillstore in aiskillstore/marketplace

A skill your agent uses when implementing structured error handling in backend or frontend code.

No licenceAuto-check passedDevelopment

Install Error Handling

skills CLI
$ npx skills add aiskillstore/marketplace --skill error-handling -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install aiskillstore/marketplace error-handling --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/awais68/error-handling .claude/skills/error-handling && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
error-handling
GitHub stars
430
Token cost
~3.9k tokens
SKILL.md length
197 words
Files
3 (incl. scripts)
Skills in repo
1,108
Repo updated
First seen
Licence
None found

At a glance

A skill your agent uses when implementing structured error handling in backend or frontend code.

  • Implementing structured error handling in backend
  • SKILL.md covers Quick Reference, Custom Exceptions (Backend), Try-Catch Patterns and Error Logging (Backend), plus 5 more sections
  • Runs Python scripts from its folder
  • : try-catch patterns

What it does

Error Handling is an agent skill from aiskillstore/marketplace. Use when implementing structured error handling in backend or frontend code. Triggers for: try-catch patterns, custom exception classes, global error handlers, error logging, user-friendly error messages, or API error responses. NOT for: business logic validation (use domain exceptions) or unrelated error types.

Its SKILL.md is about 3.9k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including scripts (for example `scripts/verify.py` and `skill-report.json`).

It sits in Development, covering Error handling. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.

When your agent uses it

  • Implementing structured error handling in backend
  • : try-catch patterns
  • Custom exception classes
  • Global error handlers

Example prompts

  • “/error-handling”

Requirements

  • Python 3

What it can do on your machine

Read from SKILL.md and the folder at commit ad8daf7. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 1 file in scripts/ (Python), which the agent can run.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Error Handling loads about 3.9k tokens when it runs. Until then it costs about 82 tokens; SKILL.md has 197 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~82
When it runs · the whole SKILL.md, loaded when a task matches
~3.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 197 words (~3,942 tokens).

“Expert structured error handling for FastAPI backends and React/Next.js frontends with consistent error messages and logging.”

— opening of SKILL.md by aiskillstore
name
error-handling

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files (scripts) in skills/awais68/error-handling of aiskillstore/marketplace.

  • SKILL.md
  • scripts/verify.py
  • skill-report.json

Open the folder on GitHubat commit ad8daf7

Compare with similar skills

Error Handling next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Error Handling compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Error Handling this skillaiskillstore/marketplace430—~3.9kAutomated safety check: PassNone
Zodjasonjgardner/blockbench-mcp-plugin4913 repos~1.4kAutomated safety check: PassGPL-3.0
Data Client Reactreactive/data-client2k—~1.9kAutomated safety check: PassApache-2.0
Fullstack GuardianJeffallan/claude-skills12k—~1.5kAutomated safety check: PassMIT
React UI State PatternsChrisWiles/claude-code-showcase6.1k8 repos~1.6kAutomated safety check: PassNone
Mole Bug Patternstw93/Mole70k—~2kAutomated safety check: PassGPL-3.0

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Questions about Error Handling

What does Error Handling do?

A skill your agent uses when implementing structured error handling in backend or frontend code. Error Handling is an agent skill from aiskillstore/marketplace. Use when implementing structured error handling in backend or frontend code.

When should I use Error Handling?

Error Handling fits situations like: implementing structured error handling in backend; : try-catch patterns; custom exception classes; global error handlers.

How do I install Error Handling in Claude Code?

Run `npx skills add aiskillstore/marketplace --skill error-handling -a claude-code`. Or copy the skill folder (skills/awais68/error-handling in aiskillstore/marketplace) into .claude/skills/error-handling in your project. Claude Code loads it when a task matches its description.

How do I install Error Handling in Codex?

Run `npx skills add aiskillstore/marketplace --skill error-handling -a codex`. Or copy the skill folder (skills/awais68/error-handling in aiskillstore/marketplace) into .agents/skills/error-handling in your project. Codex loads it when a task matches its description.

Can I use Error Handling in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill error-handling -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/error-handling, .gemini/skills/error-handling, .github/skills/error-handling and .opencode/skills/error-handling in your project.

What does Error Handling need to run?

Going by SKILL.md and its folder, Error Handling needs Python for the scripts in its folder. Our summary lists: Python 3.

Does Error Handling access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Error Handling safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Error Handling use?

No licence was found for Error Handling or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Error Handling use?

About 3.9k tokens (SKILL.md is roughly 16k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Error Handling?

Skills that share tags, products or a category with Error Handling: Zod (jasonjgardner/blockbench-mcp-plugin, 491 stars), Data Client React (reactive/data-client, 2k stars), Fullstack Guardian (Jeffallan/claude-skills, 12k stars) and React UI State Patterns (ChrisWiles/claude-code-showcase, 6.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Error Handling?

aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,108 skills in this directory. The repository was last updated on October 7, 2026.

Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.