Creating content with AI that sounds like you is harder than it looks. A writing guide is the final piece of a three-part system that turns Claude into a reliable writing partner. This guide shows you how to create one that captures your voice, preferences, and rules.

By the end of this guide, you'll:

  • Create your own AI writing guide.
  • Apply it to your AI tools for consistent first drafts.
  • Know how to maintain and improve your guide over time.

Note: This guide completes the three-part formula for AI writing. If you're new, start with personas (Part 1) and value propositions (Part 2).

What is a writing guide, and why do you need one?

A writing guide is your personal style manual for AI. It captures your voice, preferences, and rules in a format that AI tools can follow.

Without it, you'll spend more time editing than writing. AI defaults to safe, generic language that doesn't match your communication style. A well-crafted guide gives AI three things it needs to write like you:

  • Your unique voice: style preferences for formality, humor, and personality.
  • Your guidelines: how to communicate and structure content.
  • Your writing rules: specific do's and don'ts for language use.

The result is first drafts needing editing, not complete rewrites.

Your complete AI writing system

Your writing guide completes a three-part system:

Tool Purpose Problem it solves
Personas Know your audience No more generic reader assumptions
Value propositions Focus your message Clear, relevant content consistently
Writing guide Find your voice Text that sounds authentically you

With all three in place, AI understands who to write for, what to say, and how to say it.

Elements of an effective writing guide

Your writing guide needs four sections. Here's what each one does:

1. About

This section defines your content's foundation:

  • Definition: a statement describing your content.
  • Mission and goal: what your content aims to achieve.
  • Target audience: a brief description of your audience.

For example, michaellek.com defines itself as "practical, tool-agnostic how-to guides that teach entrepreneurs and knowledge workers to write effective AI prompts and build and manage their own AI agents."

2. Tone of voice

This section defines your position on four dimensions, following the Nielsen Norman Group framework:

  • Funny vs. serious: balance of humor and professional tone.
  • Formal vs. informal: how conversational your content should be.
  • Respectful vs. irreverent: approach to conventional ideas.
  • Enthusiastic vs. factual: balance between emotion and objectivity.

Each dimension should include examples that illustrate your chosen tone in practice.

3. Guidelines

This section establishes the content rules:

  • Accessible writing: how to use plain language and explain complex ideas.
  • Form of address: how you refer to your audience ("you" vs. other forms).
  • Text structure: guidelines for paragraphs, formatting, and organization.

These guidelines ensure consistent presentation and easy comprehension.

4. Writing rules

The final section covers specific language mechanics:

  • Error-free writing: spelling and grammar standards.
  • Sentence rules: length, structure, and complexity.
  • Formulation: specific guidance on word selection and expression.

These rules produce polished content that maintains your standards.