๐ŸงฉCustom Development

How to Customize OpenClaw Personality with soul.md

Beginner30-60 minutesUpdated 2025-01-20

OpenClaw's soul.md file defines your AI assistant's personality, tone, and behavioral guidelines. Whether you want a formal business assistant, a friendly helper, or a quirky creative partner, soul.md lets you customize how your AI communicates and behaves. This guide shows you how to craft an effective personality configuration.

Why This Is Hard to Do Yourself

These are the common pitfalls that trip people up.

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Personality consistency

Defining a personality is easy. Making it consistent across all interactions and edge cases is hard

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Balancing brand and function

Too much personality can interfere with task completion. Finding the right balance requires iteration

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Setting effective guardrails

Behavioral boundaries need to be specific enough to work but general enough to not block legitimate requests

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soul.md syntax quirks

The format accepts markdown but has special sections with implicit rules that aren't well documented

Step-by-Step Guide

Step 1

Understand soul.md structure

Step 2

Create your soul.md file

Step 3

Define personality traits

Warning: Be specific about what the AI is NOT. Negative examples are often more effective than positive ones.

Step 4

Set communication style and brand voice

Step 5

Configure behavioral boundaries

Step 6

Add safety guardrails

Warning: Guardrails in soul.md are advisory, not enforced. They guide behavior but don't technically prevent actions. For true enforcement, use skill permissions.

Step 7

Test and iterate on personality consistency

Need a Personality That Actually Works?

Defining personality is easy. Making it consistent, balanced, and effective across thousands of interactions is an art. Our experts craft soul.md configurations that feel natural and enhance productivity.

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Frequently Asked Questions