Fail Early Pattern

Q: What is a Claude Code skill and how does the Fail Early Pattern skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Fail Early Pattern is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: general-misc · Last updated: 2026-05-21

Wendet das Fail-Early-(Fail-Fast-)Muster an, um Fehler so frueh wie moeglich zu erkennen und zu melden. Behandelt Eingabevalidierung mit Guard-Klauseln, aussagekraeftige Fehlermeldungen, Assertion-Funktionen und Anti-Muster, die Fehler still verschlucken. Primaere Beispiele in R mit allgemeiner/polyglotter Anleitung. Verwenden beim Schreiben von Funktionen, die externe Eingaben akzeptieren, beim Hinzufuegen von Eingabevalidierung vor der CRAN-Einreichung, beim Refaktorieren von Code der still falsche Ergebnisse erzeugt, beim Ueberpruefen von PRs auf Fehlerbehandlungsqualitaet oder beim Absichern interner APIs gegen ungueltiger Argumente.

Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Fail Early Pattern includes pricing or quota commentary; 13 code blocks for direct copy-paste. At roughly 1,699 words the SKILL.md is on the longer end of the catalog distribution.

Source: pjt222.github.io/agent-almanac
License: MIT
Original author: pjt222
Indexed lastmod: 2026-05-21
Catalog position: General · general-misc
Indexed related skills: 10

How Fail Early Pattern fits the catalog

Fail Early Pattern sits in the General category under the general-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Wenn etwas scheitern wird, sollte es so frueh wie moeglich, so laut wie moeglich und mit so viel Kontext wie moeglich scheitern. Dieser Skill kodifiziert das Fail-Early-Muster: Eingaben an Systemgrenzen validieren, Guard-Klauseln verwenden, um schlechten Zustand abzulehnen bevor er sich ausbreitet, und Fehlermeldungen schreiben, die beantworten was scheiterte, wo, warum und wie man es behebt.

What this skill does

Fail Early Pattern is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/fail-early-pattern/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Fail Early Pattern Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 146,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/fail-early-pattern
curl -L https://claudskills.com/skills/fail-early-pattern/SKILL.md \
  -o ~/.claude/skills/fail-early-pattern/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/fail-early-pattern/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/fail-early-pattern/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\fail-early-pattern\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Fail Early Pattern Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/fail-early-pattern/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Fail Early Pattern skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Fail Early Pattern skill?

Use Fail Early Pattern when your Claude Code task falls under the General category — specifically in the general misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Fail Early Pattern" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Fail Early Pattern skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Fail Early Pattern is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/pjt222/agent-almanac/blob/252da39d7049aacad2bf63f8559e6fb570326501/i18n/de/skills/fail-early-pattern/SKILL.md
License: MIT
Author: pjt222
Website: https://pjt222.github.io/agent-almanac/

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

pjt222. (2026). Fail Early Pattern [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/fail-early-pattern/

BibTeX

@misc{fail-early-pattern-2026,
  author    = {pjt222},
  title     = {Fail Early Pattern [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/fail-early-pattern/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/fail-early-pattern.svg)](https://claudskills.com/skills/fail-early-pattern/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-07-06 — free static scan against the OWASP Agentic Skills Top 10.

The scan flagged 1 of 10 categories (filesystem), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
⚠ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/fail-early-pattern/#security)

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