prompt-improver

Analyze and rewrite prompts to align with Claude's prompting best practices.

5|1|Updated Jan 26, 2026
One-click install
npx skills add https://github.com/SynapSync/skills-registry --skill prompt-improver-synapsync
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: prompt-improver
Source: https://github.com/SynapSync/skills-registry/tree/main/cognitives/skills/general/prompt-improver
Command: npx skills add https://github.com/SynapSync/skills-registry --skill prompt-improver-synapsync

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Prompts often lack structure, context, and concrete guidance, leading to suboptimal AI responses. The Prompt Improver provides a disciplined, reproducible approach to analyze, diagnose, and rewrite prompts to align with Claude's prompting best practices.

Core Features & Use Cases

  • Analyze prompts against Claude's best-practices framework.
  • Diagnose weaknesses and generate a rewritten prompt with justification.
  • Provide a concise explanations and optional guidance for tagging and formatting.
  • Use Cases: when refining system prompts, user prompts, or API prompts to improve clarity, specificity, and output quality.

Quick Start

Provide a raw prompt to receive an improved version aligned with Claude's prompting best practices, with a justification.

Frequently Asked Questions about prompt-improver

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I improve prompt structure to align with Claude best practices?

To improve prompt structure, analyze your raw prompt against Claude's official prompting best practices, then apply role definitions, XML tagging, and output formatting. This generates a rewritten, ready-to-use prompt with a concise justification for the changes made.

What is the best way to rewrite API prompts for better AI output quality?

The best way to rewrite API prompts is by diagnosing weaknesses in context and specificity, then transforming them into higher-quality versions. This approach applies structural improvements and example formatting to guide the AI toward more accurate responses.

How do I add XML tags and examples to my system prompts?

Adding XML tags and examples to system prompts involves applying optional guidance for tagging and formatting during the prompt improvement process. This structures the prompt content clearly, separating instructions from data to guide future edits.

Why does my Claude prompt lack context and produce suboptimal responses?

Your Claude prompt lacks context and produces suboptimal responses because it often misses concrete guidance, structure, and clear role definitions. Rewriting it with specific examples and output formatting ensures the AI receives disciplined, reproducible instructions.

Can I use prompt engineering techniques to fix unstructured user prompts?

Yes, you can use prompt engineering techniques to fix unstructured user prompts by diagnosing weaknesses and applying a best-practices framework. This transforms vague input into a rewritten prompt with clear structure, role definitions, and justification.