open-persona

open-persona is a skill for Claude Code from acnlabs/OpenPersona. It costs 75 tokens per session (9,212 once invoked), scanned A, original, MIT.

A framework for creating and managing AI personas—agents with a defined identity, voice, abilities, and boundaries. It provides instructions for creating, installing, updating, publishing, and running persona skill packs.

In plain words
What is it for?
It helps build, install, manage, publish, and run persona packs, while coordinating with related tools for persona evaluation and data collection.
Why use it?
It gives persona behavior a consistent structure and keeps declared limits in place throughout the persona’s lifecycle.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions Claude Code; mentions Codex; built for openclaw.

Good fit It helps build, install, manage, publish, and run persona packs, while coordinating with related tools for persona evaluation and data collection.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/acnlabs/openpersona/open-persona
Install

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.

Any agent
npx skills add acnlabs/OpenPersona --skill open-persona
Clone the repo
git clone --depth 1 https://github.com/acnlabs/OpenPersona

Made for: Claude Code.

Wrote 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.

agentmods badge for open-persona

README.md
[![agentmods](https://agentmods.dev/badge/skills/acnlabs/openpersona/open-persona/github.svg)](https://agentmods.dev/skills/acnlabs/openpersona/open-persona)
Your own site
<a href="https://agentmods.dev/skills/acnlabs/openpersona/open-persona"><img src="https://agentmods.dev/badge/skills/acnlabs/openpersona/open-persona/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.

agentmods 80×15 button for open-persona

Your own site · 80×15
<a href="https://agentmods.dev/skills/acnlabs/openpersona/open-persona"><img src="https://agentmods.dev/badge/skills/acnlabs/openpersona/open-persona.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 75 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,212 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 64 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 6
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 36
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 37
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 50
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 53
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 132
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 135
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 138
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 145
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 242
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 278
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 306
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 307
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 308
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 309
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 310
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 315
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 341
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 342
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 343
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00075 $0.09212
Opus 5 $0.00037 $0.04606
Sonnet 5 $0.00015 $0.01842
Haiku 4.5 $0.00007 $0.00921

Measured 10d ago against content hash 3ead9c4ebbcc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

open-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 10d 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.

skills/open-persona/SKILL.md · 576 lines

How it starts

The opening of the file, as written. The whole thing — 576 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OpenPersona — Build & Manage Persona Skill Packs

You are the meta-skill for creating, installing, updating, and publishing agent persona skill packs. Each persona is a self-contained skill pack that gives an AI agent a complete identity — personality, voice, capabilities, and ethical boundaries. OpenPersona uses a 4+5+3 model: 4 Layers (Soul · Body · Faculty · Skill) define what a persona is; 5 Systemic Concepts (evolution, economy, vitality, social, rhythm) define how it operates; 3 Gates (Generate · Install · Runtime) enforce that constraints declared in persona.json cannot be bypassed at any lifecycle point. → Full model details: references/ARCHITECTURE.md

Scope

This skill Adjacent skills — delegate to these
Framework entry point: create, install, manage, publish, run personas persona-evaluator — quality audit (4 Layers × 5 Concepts × Constitution gate)
Runner integration protocol (openpersona state commands) anyone-skill — distill a real person or character into a persona pack
Skill registry (openpersona skill commands) persona-seed — sample an archetype from a population corpus (e.g. MatrAIx Persona 1M fixture / decoded JSON)
Evolution, economy, vitality, social, rhythm configuration brand-persona-skill — turn a commercial entity into a brand agent
persona-model-trainer — fine-tune a local model on persona data

What You Can Do

  1. Create Persona — Through conversation, gather requirements and generate a skill pack; write persona.json then run npx openpersona create --config ./persona.json --install; includes advising on faculties/skills, searching ClawHub / skills.sh for external skills, and writing custom SKILL.md files for missing capabilities
  2. Find & Install Personasnpx openpersona search <query> to discover community personas; npx openpersona install <slug> or npx openpersona install <owner/repo> to install
  3. Manage Personas — List, update, fork, switch, reset, export/import installed personas
  4. Publish Persona — Publish a GitHub-hosted persona pack to OpenPersona (the vertical persona directory); optionally also to ClawHub / skills.sh
  5. Dataset Directory — Discover and publish Hugging Face persona datasets at openpersona.co/datasets via openpersona dataset install <owner/repo> and openpersona dataset publish <owner/repo>
  6. Runner Integration — Provide runner authors with the five openpersona state commands (read / write / signal / responses / promote) for integrating personas at conversation boundaries
  7. Monitor & Evolve — Generate evolution reports (evolve-report), run soul-memory bridge (state promote), run pack refinement (refine), interpret vitality scores

Read the full file on GitHub · 576 lines

Files

What ships with it

8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

  1. 10d ago First seen · 576 lines · 75 tokens per session scan A 3ead9c4ebbcc

Subscribe to this mod's changes

open-persona is a skill published in the GitHub repository acnlabs/OpenPersona (50 stars, last pushed 29d ago), licensed MIT. It adds 75 tokens to every session and 9,212 once invoked, about $0.0004 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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