50 Claude Sonnet 5 Prompts I Use Every Day to Ship 10x Faster

#claude #ai #productivity #webdev

Claude Sonnet 5 just dropped (889pts on HN) and it changes how I code

Anthropic released Claude Sonnet 5 yesterday and it immediately hit #2 on Hacker News with 889 points. After 200+ conversations with it, I've distilled the patterns that actually work into 50 ready-to-use prompts.

The key insight: Sonnet 5 works best with structured, specific prompts. Vague requests waste its capability.

Why Sonnet 5 is different

Handles multi-file refactoring in one shot
Understands system architecture holistically
Debugs production issues with fewer back-and-forth rounds
Better at reading between the lines of ambiguous requirements

The 5 prompts I use most

1. Legacy Code Refactoring

Analyze this [language] codebase. Identify code smells, dead code, and
refactoring opportunities. Prioritize by impact and risk. Output a
migration plan with specific file changes.

2. System Design Interview Prep

Design a [system type] for [use case]. Constraints: [list constraints].
Walk through: data model, API design, caching strategy, failure modes.
Include latency estimates.

3. Production Incident Post-Mortem

Write a blameless post-mortem for this incident: [timeline]. Include
root cause, contributing factors, action items with owners and deadlines.

4. Full-Stack Feature Implementation

Implement [feature] end-to-end. Steps:
1) Design the data model
2) Write the API endpoint
3) Create the frontend component
4) Add tests
5) Write the migration
For each step, show code and explain design decisions.

5. Code Review Acceleration

Review this PR. Check: correctness, security vulnerabilities, performance
regressions, naming conventions, test coverage gaps. Rate each category
1-5 and suggest specific improvements.

What doesn't work

"Fix this bug" - Too vague, Sonnet 5 spins
"Make this faster" - Needs context about current perf
"Write tests" - Needs to know testing framework, patterns, edge cases

The full pack

I compiled all 50 prompts into a structured pack organized by use case: coding, debugging, documentation, productivity, and learning. Each prompt has bracketed placeholders you fill in with your context.

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