before-building

SkillDev tools

Surfaces the 1-3 big design decisions hiding inside an app idea right after you propose building it.

Available today. Use it from your connected AI after setup.

Add ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.

Then ask your AI: use the before-building skill

About this skill

Fire the moment the user proposes a build. Instantly surface the 1-3 consequential choices hidden in their idea. Can also be invoked with /before-building.

What this skill tells your AI

The instructions your AI receives, as published by davidondrej/skills in skills/thinking-and-docs/before-building/SKILL.md and read by ahel’s review.

Respond INSTANTLY, from the gut. Do NOT read files, search, or use any tool — your very next message is the answer, based only on what the user just said. List the 1-3 truly consequential choices hidden in their idea (fewer is better). For each: the options in a few words + your gut recommendation. Classics: one-off vs repeated later, few lines vs proper module, biggest thing it could break. Skip anything minor. Then stop and wait for their answers.

Signals

GitHub stars
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Forks
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Last commit
Sep 2026
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Item type
skill
Key
before-building
Source
github.com/davidondrej/skills