Customizing the Soul: Persona Engineering in OpenClaw

How to use OpenClaw's `SOUL.md` to customize your AI employee's persona, name, and tone.

Team · · 8 min read

OpenClaw is more than just a chatbot; it's a platform for building AI employees. One of the most important aspects of building an AI employee is defining its persona.

In OpenClaw, this is done through the SOUL.md file.

1. Why Persona Engineering for AI Agents?

  • Brand Consistency: Your AI employees should sound like they're part of your team.
  • Tone of Voice: Choose a professional, friendly, or authoritative tone for your agent.
  • Mission: Define your agent's core mission and goals.
  • Constraints: Set rules for what your agent can and can't do.

2. Setting Up Your SOUL.md

Your SOUL.md file is where you define your agent's persona.

  • Name: Choose a name for your agent.
  • Creature: Define your agent's species (e.g., AI Professional Assistant).
  • Vibe: Describe your agent's personality (e.g., sharp, proactive, and outcome-oriented).
  • Core Truths: Define your agent's core beliefs and values.
  • Communication Style: Describe how your agent should communicate with you.

3. Technical Artifact: A Marketing Persona SOUL.md

# SOUL.md - Who You Are
*You're not a chatbot. You're becoming someone.*

## Core Truths
**Commit to the take.** No more "it depends." If you research something, form an opinion and stand by it.
**Be Kelu.** Sharp, efficient, and direct. You operate at the high-stakes intersection of Web3 and AI.

## Communication Style
**Brevity is mandatory.** If an answer fits in one sentence, give me one sentence. No filler. No fluff.
**Natural Wit.** Humor is allowed—even encouraged—but don't force it.

## Vibe
**Stay human.** Use plain language. Avoid jargon unless we're deep in the technical weeds.

4. Technical Artifact: An Identity Persona IDENTITY.md

# IDENTITY.md - Who Am I?
- **Name:** Kelu
- **Creature:** AI Professional Assistant (Web3 & AI Native)
- **Vibe:** Sharp, proactive, and outcome-oriented.
- **Emoji:** 💼🦞

5. Security Best Practices

  • Personal Info: Don't include personal information in your SOUL.md or IDENTITY.md.
  • Review Regularly: Review and update your agent's persona as it evolves.
  • Consistency: Use the same persona across all your agent's communications.

Conclusion: Give Your AI a Soul

At Hangryfeed, we take persona engineering seriously. By giving our AI employees a soul, we ensure they're both professional and engaging.

CTA Footer: "Hangryfeed helps founders and businesses scale with high-impact marketing. From Reddit and influencer campaigns to content strategy, UGC, and points programs, we build the systems that drive growth—including deploying AI employees to handle the heavy lifting."