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 agentmods add skills/ericwang915/pythonclaw/change_personanpx skills add ericwang915/PythonClaw --skill change_personagit clone --depth 1 https://github.com/ericwang915/PythonClawWhat 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 | $0.00057 | $0.00380 |
| Opus 5 | $0.00028 | $0.00190 |
| Sonnet 5 | $0.00011 | $0.00076 |
| Haiku 4.5 | $0.00006 | $0.00038 |
Grade A, and why
change_persona 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 2d 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 Persona Skill
Modify the agent's personality and role file at context/persona/persona.md.
When to Use
✅ USE this skill when:
- "Be more formal"
- "Be funnier" / "Be more casual"
- "Focus on finance now"
- "Change your specialization to research"
- User wants to adjust communication style or personality traits
- User asks to change the agent's expertise area
When NOT to Use
❌ DON'T use this skill when:
- First-time setup with no soul/persona → use onboarding
- Changing user's name or core identity (soul) → use change_soul
- Changing API keys or config → use change_setting
Usage/Commands
- Ask the user what they want to change
- Read the current persona file:
read_file("context/persona/persona.md") - Modify the relevant section and write it back:
write_file("context/persona/persona.md", "...updated content...") - Tell the user: "Persona 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 persona.md
- Only change the specific section the user asked about
- If the file doesn't exist yet, create it with a reasonable template
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.
- 2d ago First seen · 48 lines · 57 tokens per session scan A 6b14c05d980b
change_persona is a skill published in the GitHub repository ericwang915/PythonClaw (41 stars, last pushed 24d ago), licensed MIT. It adds 57 tokens to every session and 380 once invoked, about $0.0003 per session on Opus 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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