Free prompt library

Claude prompts that actually work

50 field-tested prompts across five disciplines — each with the reasoning for why it works, so you can adapt it instead of cargo-culting it. No signup. Copy and go.

[ 5 collections · 50 prompts · updated July 2026 ]

📊10 prompts

Data analysis

10 Claude Prompts for Data Analysis That Actually Work

Ten battle-tested Claude prompts for data analysis: profiling messy datasets, writing SQL, statistical sanity checks, chart selection, and turning numbers into an executive narrative. Copy, paste, and adapt.

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✍️10 prompts

Writing

10 Claude Prompts for Writing That Doesn't Sound Like AI

Ten copy-paste Claude prompts for writers: first drafts with a real voice, ruthless editing, structure fixes, de-AI-ifying your text, and rewriting for a specific reader. Each prompt explains why it works.

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💼10 prompts

Business

10 Claude Prompts for Business Strategy & Operations

Ten practical Claude prompts for business: pressure-testing strategy, pricing decisions, meeting prep, competitive analysis, hiring scorecards, and hard emails. Built for founders, operators, and managers.

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⌨️10 prompts

Coding

10 Claude Prompts for Coding, Debugging & Code Review

Ten engineer-grade Claude prompts: debugging with hypotheses, adversarial code review, refactoring plans, test generation that finds real bugs, architecture decisions, and legacy code archaeology.

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📣10 prompts

Marketing

10 Claude Prompts for Marketing That Converts

Ten field-tested Claude prompts for marketers: positioning, landing pages that convert, email sequences, SEO content briefs, ad variants, and turning customer interviews into messaging. Copy and adapt.

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🧠

Learn the technique

Prompts are fish; technique is fishing. Read 10 prompting techniques for Claude to write your own.

Read the guide →
Beyond prompts

Prompts are the manual way. Kits are the installed way.

The ClaudeThings kits package this kind of expertise as 89 agents, 103 skills, and 181 slash commands that live inside Claude Code — so instead of pasting a code-review prompt, you type /review.

Explore the kits