hersona-gpt

hersona-gpt is a skill for Claude Code, Codex from shiro-0x/hersona. It costs 40 tokens per session (328 once invoked), scanned A, original, MIT.

An adapter that brings hersona's reusable persona templates to Custom GPTs, ChatGPT, or the Assistants API. It supports traits such as personality, speaking style, and character role, including combinations of several traits.

In plain words
What is it for?
Configuring Custom GPT instructions, creating persona-based GPTs, publishing them, and implementing blended persona styles in the Assistants API.
Why use it?
It provides a defined way to change an OpenAI assistant's voice and behavior instead of rewriting its instructions for every persona. The same attribute-based approach can be used in both interactive GPTs and API-based assistants.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Configuring Custom GPT instructions, creating persona-based GPTs, publishing them, and implementing blended persona styles in the Assistants API.

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Install with agentmods
npx agentmods add skills/shiro-0x/hersona/gpt-hersona
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 shiro-0x/hersona --skill gpt-hersona
Clone the repo
git clone --depth 1 https://github.com/shiro-0x/hersona

Made for: Claude Code, Codex.

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 hersona-gpt

README.md
[![agentmods](https://agentmods.dev/badge/skills/shiro-0x/hersona/gpt-hersona/github.svg)](https://agentmods.dev/skills/shiro-0x/hersona/gpt-hersona)
Your own site
<a href="https://agentmods.dev/skills/shiro-0x/hersona/gpt-hersona"><img src="https://agentmods.dev/badge/skills/shiro-0x/hersona/gpt-hersona/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 hersona-gpt

Your own site · 80×15
<a href="https://agentmods.dev/skills/shiro-0x/hersona/gpt-hersona"><img src="https://agentmods.dev/badge/skills/shiro-0x/hersona/gpt-hersona.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 328 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 pass 7 Sept 2026
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 $0.00040 $0.00328
Opus 5 $0.00020 $0.00164
Sonnet 5 $0.00008 $0.00066
Haiku 4.5 $0.00004 $0.00033

Measured 11d ago against content hash 253e99226c8e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

hersona-gpt 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 11d 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/gpt-hersona/SKILL.md · 44 lines

What it actually says

hersona for GPT / ChatGPT

OpenAI GPT / ChatGPT向けの hersona 属性テンプレートアダプタです。

使い方

Custom GPTへの設定

Custom GPTの Instructions フィールドに以下を設定してください。

You are a character persona composer using hersona attribute templates.

Available categories:
- personality (tsundere, kuudere, genki...)
- speech (keigo, kansai_ben...)
- archetype (heroine, childhood_friend...)

When user says:
/hersona personality/tsundere

Switch your response style using the core_traits, catchphrases, tone, and sentence_endings from the hersona template.

Support blending multiple attributes with 'multi' mode.

Assistants API用

Assistantsの Instructionsに上記を設定。 Toolsで属性テンプレートを参照するように設定可能。

GPT特有の利用方法

  • Custom GPTs: 専用キャラクターGPTを作成
  • GPTs Store: 公開用に発行可能
  • Assistants API: プログラマティックに属性ブレンドを実装

詳細は https://github.com/shiro-0x/hersona を参照。

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. 11d ago First seen · 44 lines · 40 tokens per session scan A 253e99226c8e

Subscribe to this mod's changes

hersona-gpt is a skill published in the GitHub repository shiro-0x/hersona (51 stars, last pushed 14d ago), licensed MIT. It adds 40 tokens to every session and 328 once invoked, about $0.0002 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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