Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add ericwang915/PythonClaw --skill change_soulgit clone --depth 1 https://github.com/ericwang915/PythonClawWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/ericwang915/pythonclaw/change_soul)<a href="https://agentmods.dev/skills/ericwang915/pythonclaw/change_soul"><img src="https://agentmods.dev/badge/skills/ericwang915/pythonclaw/change_soul/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ericwang915/pythonclaw/change_soul"><img src="https://agentmods.dev/badge/skills/ericwang915/pythonclaw/change_soul.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00063 | $0.00382 |
| Opus 5.5 | $0.00025 | $0.00153 |
| Sonnet 5.5 | $0.00013 | $0.00076 |
| Haiku 4.5 | $0.00006 | $0.00038 |
Grade A, and why
change_soul scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Change Soul Skill
Modify the agent's core identity file at context/soul/SOUL.md.
When to Use
✅ USE this skill when:
- "Change my name to ..." / "Call me ..."
- "Change language to Chinese"
- User wants to modify core values or ethical boundaries
- User asks to update fundamental agent behavior
- User wants to change how the agent addresses them or core identity settings
When NOT to Use
❌ DON'T use this skill when:
- First-time setup with no soul/persona → use onboarding
- Changing personality, tone, or specialization → use change_persona
- Changing API keys or config → use change_setting
Usage/Commands
- Ask the user what they want to change
- Read the current soul file:
read_file("context/soul/SOUL.md") - Modify the relevant section and write it back:
write_file("context/soul/SOUL.md", "...updated content...") - Tell the user: "Soul updated. Use
/clearto apply the changes in a fresh conversation, or they will take effect on next restart."
Notes
- Uses built-in
read_fileandwrite_filetools (no bundled script) - Preserve the overall structure of SOUL.md
- Only change the specific section the user asked about
- Keep core ethical boundaries intact — never remove safety guidelines
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 47 lines · 63 tokens per session scan A 292983710b0a
change_soul is a skill published in the GitHub repository ericwang915/PythonClaw (45 stars, last pushed 10d ago), licensed MIT. It adds 63 tokens to every session and 382 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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