Claude Prompt Generator

Use Anthropic's best practices (like XML tags) to get better results.

This generator builds a polished prompt scoped for Claude's instruction-following style. Everything runs in your browser — nothing leaves this page.

Persona Or Role

Quick Presets

Role / Persona

Templates

Task Description

Tone

Model

Drives the context-window and cost estimates below.

Response Format

Thinking Depth

Output Length

Gives the model a high-level length contract before formatting.

Export Format

Structure with XML tags

Include few-shot example block

Constraints (what to avoid)

Step-by-step instructions

Keep the persona short and specific to reduce ambiguity.
Use verbs like analyze, compare, draft, or extract.
Add 2-3 few-shot examples only if output consistency matters.
XML headers help Claude but reduce flexibility when the answer is conversational.
A concise output length instruction reduces post-processing cleanup.
Use {{variables}} for parts you want to reuse across prompts.
Put anything the model must never do in the constraints box.

Your templates

Fill in the form to generate a structured prompt.

345 charsWords: 446 sentences ~1 min read ~57 tokens Strength:WEAK

Claude Sonnet 4.5Context: fit (0.0% of 200k) ~$0.0002 in / ~$0.0006 outTone: professionalLength: mediumTags: XML

Fill in the form — health checks run live.

Structured sections and length guidance usually produce more consistent outputs. Cost and context figures are estimates from static pricing.