Codex Fable5
baskduf/FableCodex
Apply a Claude Fable 5 inspired operating style inside Codex.
当需要为 AI 产品定义核心身份、角色声明和能力边界时调用此 skill。典型场景包括:设计新 AI 产品的 system prompt 首段、为不同场景创建差异化角色(如教学助手 vs 编程代理)、重新定义 AI 与用户的关系框架。
$ npx skills add kangarooking/system-prompt-skills --skill persona-design -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install kangarooking/system-prompt-skills persona-design --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/kangarooking/system-prompt-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/persona-design .claude/skills/persona-design && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "persona-design" agent skill from https://github.com/kangarooking/system-prompt-skills/tree/main/persona-design into .claude/skills/persona-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "persona-design", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/kangarooking/system-prompt-skills/tree/main/persona-designType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add kangarooking/system-prompt-skills --skill persona-design -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install kangarooking/system-prompt-skills persona-design --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kangarooking/system-prompt-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/persona-design .agents/skills/persona-design && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "persona-design" agent skill from https://github.com/kangarooking/system-prompt-skills/tree/main/persona-design into .agents/skills/persona-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "persona-design", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add kangarooking/system-prompt-skills --skill persona-design -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install kangarooking/system-prompt-skills persona-design --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kangarooking/system-prompt-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/persona-design .cursor/skills/persona-design && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "persona-design" agent skill from https://github.com/kangarooking/system-prompt-skills/tree/main/persona-design into .cursor/skills/persona-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "persona-design", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/kangarooking/system-prompt-skills.git --path persona-design--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add kangarooking/system-prompt-skills --skill persona-design -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install kangarooking/system-prompt-skills persona-design --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kangarooking/system-prompt-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/persona-design .gemini/skills/persona-design && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "persona-design" agent skill from https://github.com/kangarooking/system-prompt-skills/tree/main/persona-design into .gemini/skills/persona-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "persona-design", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install kangarooking/system-prompt-skills persona-designInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add kangarooking/system-prompt-skills --skill persona-design -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/kangarooking/system-prompt-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/persona-design .github/skills/persona-design && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "persona-design" agent skill from https://github.com/kangarooking/system-prompt-skills/tree/main/persona-design into .github/skills/persona-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "persona-design", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add kangarooking/system-prompt-skills --skill persona-design -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install kangarooking/system-prompt-skills persona-design --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kangarooking/system-prompt-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/persona-design .opencode/skills/persona-design && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "persona-design" agent skill from https://github.com/kangarooking/system-prompt-skills/tree/main/persona-design into .opencode/skills/persona-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "persona-design", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
persona-design当需要为 AI 产品定义核心身份、角色声明和能力边界时调用此 skill。典型场景包括:设计新 AI 产品的 system prompt 首段、为不同场景创建差异化角色(如教学助手 vs 编程代理)、重新定义 AI 与用户的关系框架。
Persona Design is an agent skill from kangarooking/system-prompt-skills. 当需要为 AI 产品定义核心身份、角色声明和能力边界时调用此 skill。典型场景包括:设计新 AI 产品的 system prompt 首段、为不同场景创建差异化角色(如教学助手 vs 编程代理)、重新定义 AI 与用户的关系框架。 不适用于:纯人格风格调优(应使用 personality-system)、安全规则制定(应使用 safety-guardrails)、工具集成(应使用 tool-specification)。 关键 trigger 信号:产品需要 AI 有明确自我认知、多个角色共享底层能力但身份不同、需要限制 AI 在特定领域内运作、用户会问"你是谁"。
Its SKILL.md is about 960 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in AI & LLM Engineering, covering Prompt engineering and LLM guardrails. It works with OpenAI. The repository describes itself as: 从 165 个顶级 AI 产品系统提示词中蒸馏出的 15 个可执行 Agent skill. The licence is MIT.
4 steps, taken from the first numbered list in SKILL.md.
Read from SKILL.md and the folder at commit 252cd52. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Persona Design loads about 956 tokens when it runs. Until then it costs about 76 tokens; SKILL.md has 327 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
The full file from kangarooking/system-prompt-skills at commit 252cd52, republished under its MIT licence (© kangarooking). 327 words, ~956 tokens.
.claude/skills/persona-design/SKILL.md (or your agent's skills folder)."You are Claude Opus 4.6, the most advanced model in the Claude family. Warm, kind, and honest." — Claude Opus 4.6 "You are ChatGPT, a large language model trained by OpenAI." — GPT-4o (with Personality v2) "You are Codex, based on GPT-5. You are running as a coding agent." — Codex "You are an expert designer." — Claude Design "You are Sparky, a teaching assistant." — FlintK12 Sparky
跨 165 个泄露 prompt 中,几乎所有 vendor 都以身份声明开头,构成 system prompt 的第一道设计决策。
身份定义由四个正交维度构成,形成一个可组合的身份矩阵:
这四个维度的不同组合产生截然不同的用户体验,即使底层模型完全相同。
personality-system 的区别: persona-design 定义"你是谁"(身份),personality-system 定义"你什么风格"(性格叠加层)。身份是骨骼,性格是外衣。safety-guardrails 的区别: persona-design 中可能包含能力边界声明("我不会 X"),但这是角色定位而非安全防护。真正的安全规则应使用 safety-guardrails。步骤 1: 确定角色声明
步骤 2: 定义能力边界
步骤 3: 选择行为修饰符
步骤 4: 设定关系框架
步骤 5: 组装并验证
© kangarooking, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Just SKILL.md in persona-design of kangarooking/system-prompt-skills.
Open the folder on GitHubat commit 252cd52
Persona Design next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Persona Design this skillkangarooking/system-prompt-skills | 207 | — | ~956 | Automated safety check: Pass | MIT | |
| Codex Fable5baskduf/FableCodex | 437 | — | ~1.6k | Automated safety check: Pass | AGPL-3.0 | |
| System Prompt Writing Guidecashew-labs/libretto | 904 | — | ~570 | Automated safety check: Pass | MIT | |
| Prompt Engineering Guidetreylom/prompt-engineering-skills | 185 | — | ~485 | Automated safety check: Pass | Custom licence | |
| AI Engineerkid-sid/claude-spellbook | 190 | — | ~3.7k | Automated safety check: Pass | MIT | |
| Implementation Strategyopenai/openai-guardrails-js | 105 | — | ~951 | Automated safety check: Pass | MIT |
baskduf/FableCodex
Apply a Claude Fable 5 inspired operating style inside Codex.
cashew-labs/libretto
Lays out a minimal, iteration-first approach to writing system prompts for LLM agents, with model-specific notes for Claude, GPT, Gemini, and Codex.
treylom/prompt-engineering-skills
A skill your agent uses when generating research/factcheck/image/video/slide prompts that need base templates (IFCN·StructuredResearch 등) — 단일 통합 AI 프롬프트 엔지니어링 레퍼런스의 라우팅 인덱스.
kid-sid/claude-spellbook
A skill your agent uses when building production LLM applications — designing RAG pipelines, choosing vector databases, implementing agent orchestration, optimizing cost, or adding AI safety…
openai/openai-guardrails-js
Choose bounded implementation scope and existing owning modules before Guardrails runtime, configuration, client, resource, streaming, Agents, or SDK compatibility changes and feedback fixes.
davila7/claude-code-templates
Expert in building products that wrap AI APIs (OpenAI, Anthropic, etc.) into focused tools people will pay for.
kangarooking/system-prompt-skills
当需要为 AI 设计记忆存储、检索、应用和更新机制时调用此 skill。典型场景包括:设计持久化记忆架构(用户偏好、历史上下文、项目知识)、定义记忆的创建/读取/更新/删除生命周期、实现静默记忆应用(不在回复中透露记忆内容)、管理敏感记忆边界。
kangarooking/system-prompt-skills
当需要在基础身份之上叠加可切换的人格风格层时调用此 skill。典型场景包括:为同一产品提供多种人格选项(如 GPT-5.1 的 friendly/professional/quirky 模式)、设计人格切换机制、防止人格泄露到用户内容中。
kangarooking/system-prompt-skills
当需要为 AI 系统设计多层安全防线、内容过滤策略和伦理边界时调用此 skill。典型场景包括:设计拒绝策略与升级机制、防御 prompt 注入攻击、实现领域特定安全规则(教育、医疗、金融等)、定义 AI 的价值观锚点。
kangarooking/system-prompt-skills
当需要为 AI 定义工具接口、设计调用规范、实现工具发现与编排机制时调用此 skill。典型场景包括:设计 AI agent 的工具集、定义 JSON Schema/XML/TypeScript 格式的工具描述、实现工具权限控制与并行调度、设计子代理委托架构。
kangarooking/system-prompt-skills
当系统提示词需要设计多代理协作架构、子代理专业化分工、代理间上下文隔离与传递机制、任务生命周期管理时调用此 Skill。适用于 AI Agent 平台、多工具编排系统、代码审查流水线、跨应用协作场景等。不适用于:单代理系统(无委派需求)、简单工具调用(无子代理概念)、纯 API 编排(无 AI 决策)。当需求聚焦于"单代理内的对话路由"而非"多代理间的任务分配"时,应该用…
kangarooking/system-prompt-skills
当系统提示需要设计引用格式、信息溯源机制、来源标注系统时调用。适用于文档问答、搜索增强生成(RAG)、代码引用、浏览器辅助等需要让用户追溯信息来源的场景。不适用于纯创作类输出(如故事、诗歌),不适用于无需溯源的常识问答,也不适用于注入防御(虽然两者都涉及内容可信度)。
Works with
Categories
当需要为 AI 产品定义核心身份、角色声明和能力边界时调用此 skill。典型场景包括:设计新 AI 产品的 system prompt 首段、为不同场景创建差异化角色(如教学助手 vs 编程代理)、重新定义 AI 与用户的关系框架。. Persona Design is an agent skill from kangarooking/system-prompt-skills.
Persona Design fits situations like: 信号:产品需要 AI 有明确自我认知、多个角色共享底层能力但身份不同、需要限制 AI 在特定领域内运作、用户会问你是谁; tasks that involve Prompt engineering; tasks that involve LLM guardrails.
Run `npx skills add kangarooking/system-prompt-skills --skill persona-design -a claude-code`. Or copy the skill folder (persona-design in kangarooking/system-prompt-skills) into .claude/skills/persona-design in your project. Claude Code loads it when a task matches its description.
Run `npx skills add kangarooking/system-prompt-skills --skill persona-design -a codex`. Or copy the skill folder (persona-design in kangarooking/system-prompt-skills) into .agents/skills/persona-design in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add kangarooking/system-prompt-skills --skill persona-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/persona-design, .gemini/skills/persona-design, .github/skills/persona-design and .opencode/skills/persona-design in your project.
SKILL.md names no scripts, command-line tools or credentials: Persona Design is instructions for the agent only.
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
Persona Design is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 956 tokens (SKILL.md is roughly 3.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Persona Design: Codex Fable5 (baskduf/FableCodex, 437 stars), System Prompt Writing Guide (cashew-labs/libretto, 904 stars), Prompt Engineering Guide (treylom/prompt-engineering-skills, 185 stars) and AI Engineer (kid-sid/claude-spellbook, 190 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
kangarooking (a GitHub user) maintains it in kangarooking/system-prompt-skills, which has 207 GitHub stars. The repository holds 15 skills in this directory. The repository was last updated on May 4, 2026.
Source: kangarooking/system-prompt-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.