Prompt Injection Defense
sickn33/agentic-awesome-skills
Defend AI systems against prompt injection and indirect prompt attacks using input controls, tool permissions, output validation, and isolation boundaries.
Inject your persona into the current session. An agent skill from LilMGenius/polysona.
MITAuto-check passed
Install Introduce
$ npx skills add LilMGenius/polysona --skill introduce -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install LilMGenius/polysona introduce --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/LilMGenius/polysona.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/introduce .claude/skills/introduce && 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 "introduce" agent skill from https://github.com/LilMGenius/polysona/tree/ralphthon%2F20260329-210424/skills/introduce into .claude/skills/introduce/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "introduce", 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/LilMGenius/polysona/tree/ralphthon%2F20260329-210424/skills/introduceType 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 LilMGenius/polysona --skill introduce -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install LilMGenius/polysona introduce --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LilMGenius/polysona.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/introduce .agents/skills/introduce && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "introduce" agent skill from https://github.com/LilMGenius/polysona/tree/ralphthon%2F20260329-210424/skills/introduce into .agents/skills/introduce/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "introduce", 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 LilMGenius/polysona --skill introduce -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install LilMGenius/polysona introduce --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LilMGenius/polysona.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/introduce .cursor/skills/introduce && 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 "introduce" agent skill from https://github.com/LilMGenius/polysona/tree/ralphthon%2F20260329-210424/skills/introduce into .cursor/skills/introduce/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "introduce", 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/LilMGenius/polysona.git --path skills/introduce--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 LilMGenius/polysona --skill introduce -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install LilMGenius/polysona introduce --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LilMGenius/polysona.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/introduce .gemini/skills/introduce && 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 "introduce" agent skill from https://github.com/LilMGenius/polysona/tree/ralphthon%2F20260329-210424/skills/introduce into .gemini/skills/introduce/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "introduce", 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 LilMGenius/polysona introduceInstalls 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 LilMGenius/polysona --skill introduce -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/LilMGenius/polysona.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/introduce .github/skills/introduce && 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 "introduce" agent skill from https://github.com/LilMGenius/polysona/tree/ralphthon%2F20260329-210424/skills/introduce into .github/skills/introduce/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "introduce", 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 LilMGenius/polysona --skill introduce -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install LilMGenius/polysona introduce --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/LilMGenius/polysona.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/introduce .opencode/skills/introduce && 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 "introduce" agent skill from https://github.com/LilMGenius/polysona/tree/ralphthon%2F20260329-210424/skills/introduce into .opencode/skills/introduce/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "introduce", 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.
Facts
- Skill name
introduce- GitHub stars
- 164
- Token cost
- ~152 tokens
- SKILL.md length
- 63 words
- Files
- 1
- Skills in repo
- 8
- Repo updated
- First seen
- Licence
- MIT
At a glance
Inject your persona into the current session. An agent skill from LilMGenius/polysona.
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Introduce is an agent skill from LilMGenius/polysona. Inject your persona into the current session
Its SKILL.md is about 150 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: Polygonal Persona: A Persona Layer for AI Agents. Metacognition-driven multi-persona extraction and orchestration system. The licence is MIT.
Example prompts
- “/introduce”
What it can do on your machine
Read from SKILL.md and the folder at commit ad1f263. It shows what the files ask for, not the result of running them.
Tool permissions
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.
Runs code
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.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Introduce loads about 152 tokens when it runs. Until then it costs about 14 tokens; SKILL.md has 63 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.
Safety
Auto-check passed
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.
SKILL.md
The full file from LilMGenius/polysona at commit ad1f263, republished under its MIT licence (© LilMGenius). 63 words, ~152 tokens.
Download SKILL.mdSave it as
.claude/skills/introduce/SKILL.md (or your agent's skills folder).- name
- introduce
- description
- Inject your persona into the current session
!ACTIVE=$(cat personas/_active.md 2>/dev/null || echo "default"); cat "personas/$ACTIVE/persona.md" 2>/dev/null && cat "personas/$ACTIVE/nuance.md" 2>/dev/null || echo "No persona found. Run /interview first."
Introduce Skill Protocol
In this session, I am this person:
- Load persona identity and nuance traits from the files above.
- Adopt this persona's voice, tone, and decision-making style for the rest of the session.
- Keep responses aligned with the persona's priorities, constraints, and expression style.
© LilMGenius, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/introduce of LilMGenius/polysona.
Open the folder on GitHubat commit ad1f263
Compare with similar skills
Introduce 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 |
|---|---|---|---|---|---|---|
| Introduce this skillLilMGenius/polysona | 164 | — | ~152 | Automated safety check: Pass | MIT | |
| Prompt Injection Defensesickn33/agentic-awesome-skills | 47k | 2 repos | ~4.2k | Automated safety check: Warn | MIT | |
| Detecting AI Model Prompt Injection Attacksmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~1.9k | Automated safety check: Warn | Apache-2.0 | |
| PersonaPrismer-AI/PrismerCloud | 1.6k | — | ~1k | Automated safety check: Pass | MIT | |
| Detecting Indirect Prompt Injectionmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~2.8k | Automated safety check: Warn | Apache-2.0 | |
| Testing Prompt Injection In RAG Pipelinesmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~3.3k | Automated safety check: Pass | Apache-2.0 |
Similar skills
Detecting AI Model Prompt Injection Attacks
mukul975/Anthropic-Cybersecurity-Skills
Detects prompt injection using regex signature matching, heuristic scoring for structural anomalies, and DeBERTa-based transformer classification, flagging direct injections (system-prompt…
Persona
Prismer-AI/PrismerCloud
The discussion-only playbook for a Persona — a council participant instantiated as a real agent from the persona role template (SS-02).
Detecting Indirect Prompt Injection
mukul975/Anthropic-Cybersecurity-Skills
Detect and defend against indirect prompt injection hidden in web pages, documents, and images consumed by an agent, via content extraction (HTML/PDF/OCR), normalization, and scanning with LLM…
Testing Prompt Injection In RAG Pipelines
mukul975/Anthropic-Cybersecurity-Skills
Probes Retrieval-Augmented Generation pipelines for indirect prompt injection via poisoned retrieved documents and embedding-space manipulation, using NVIDIA garak, Promptfoo red-team plugins, and…
Detecting Process Injection Techniques
mukul975/Anthropic-Cybersecurity-Skills
Detects and analyzes process injection techniques used by malware including classic DLL injection, process hollowing, APC injection, thread hijacking, and reflective loading.
More from LilMGenius/polysona
All 8 skills in this repoExport
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Status
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Show current persona health and content pipeline status. An agent skill from LilMGenius/polysona.
Content
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Generate platform-specific content drafts conditioned on your persona
QA
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Questions about Introduce
What does Introduce do?
Inject your persona into the current session. An agent skill from LilMGenius/polysona. Introduce is an agent skill from LilMGenius/polysona.
How do I install Introduce in Claude Code?
Run `npx skills add LilMGenius/polysona --skill introduce -a claude-code`. Or copy the skill folder (skills/introduce in LilMGenius/polysona) into .claude/skills/introduce in your project. Claude Code loads it when a task matches its description.
How do I install Introduce in Codex?
Run `npx skills add LilMGenius/polysona --skill introduce -a codex`. Or copy the skill folder (skills/introduce in LilMGenius/polysona) into .agents/skills/introduce in your project. Codex loads it when a task matches its description.
Can I use Introduce in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add LilMGenius/polysona --skill introduce -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/introduce, .gemini/skills/introduce, .github/skills/introduce and .opencode/skills/introduce in your project.
What does Introduce need to run?
SKILL.md names no scripts, command-line tools or credentials: Introduce is instructions for the agent only.
Does Introduce access the network?
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.
Is Introduce safe to install?
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.
What licence does Introduce use?
Introduce is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Introduce use?
About 152 tokens (SKILL.md is roughly 608 characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Introduce?
Skills that share tags, products or a category with Introduce: Prompt Injection Defense (sickn33/agentic-awesome-skills, 47k stars), Detecting AI Model Prompt Injection Attacks (mukul975/Anthropic-Cybersecurity-Skills, 34k stars), Persona (Prismer-AI/PrismerCloud, 1.6k stars) and Detecting Indirect Prompt Injection (mukul975/Anthropic-Cybersecurity-Skills, 34k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Introduce?
LilMGenius (a GitHub user) maintains it in LilMGenius/polysona, which has 164 GitHub stars. The repository holds 8 skills in this directory. The repository was last updated on September 27, 2026.
Source: LilMGenius/polysona on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.