Prompting Guides

A small Anthropic-popularized prompting trick: instead of asking your AI agent to reply in plain text, ask it for HTML. You get scannable tables, color-coded options, and diagrams instead of a wall of prose. This guide covers the exact prompt, a before/after readability comparison, the real use cases, and the honest tradeoffs (token cost, noisy diffs) so you know when NOT to use it.

Level: beginner · 11 min read

Anthropic engineers do not write better prompts — they stop writing prompts. This guide breaks down the 4 rules they actually follow: prompt skills not Claude, build tools not just prompts, compose small skills instead of one giant one, and let every session sharpen the skill. Includes an annotated /draft-email skill and a composable domain-checker example.

Level: beginner · 17 min read