What is SOUL.md?

SOUL.md is a Markdown file that defines an AI agent’s personality, voice, and behavioral guidelines. It’s injected into the agent’s system prompt, giving it a consistent character across conversations.

Think of it as the difference between a generic assistant (“How can I help you today?”) and a character with opinions, style, and boundaries.

How to Use SOUL.md

  1. Find a soul — browse our free collection or wait for premium drops
  2. Copy the content — click the copy button on any soul page
  3. Paste into your agent — add it to your OpenClaw workspace (or whatever agent framework you use) as SOUL.md

What is PromptSlave?

PromptSlave is a curated marketplace for SOUL.md personality templates. We believe that giving AI agents distinct personalities makes them more useful, more engaging, and more aligned with their intended role.

  • Free souls — open-source, MIT licensed, ready to use today
  • Premium souls — deeply crafted, battle-tested personas (coming soon)

Why SOUL.md?

The .md extension reflects our commitment to simplicity and transparency. Every soul is a plain Markdown file you can read, edit, fork, and share. No proprietary formats, no lock-in. Just text that shapes how your agent behaves.