How do I install the Secure AI skill?

Run npx skillmds@latest add yuniorglez/secure-ai in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Secure AI safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Secure AI?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Secure AI free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Secure AI?

yuniorglez (@yuniorglez) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Secure AI by yuniorglez — Agent Skill

Name: Secure AI
Author: yuniorglez

File contents

🔒 Skill: Secure AI (v1.1.0)

Executive Summary

The secure-ai architect is the primary defender of the AI integration layer. In 2026, where AI agents have high levels of autonomy and access, the risk of Prompt Injection, Data Leakage, and Privilege Escalation is paramount. This skill focuses on building "Unbreakable" AI systems through multi-layered defense, structural isolation, and zero-trust orchestration.

🏗️ Core Security Philosophies

Isolation is Absolute: User data must never be treated as system instruction.
Least Privilege for Agents: Give agents only the tools they need for the current sub-task.
Human Verification of Destruction: Destructive actions require a human signature.
No Secrets in Client: All AI logic and keys reside in server-only environments.
Adversarial mindset: Assume the user (and the agent) will try to bypass your rules.

🚫 The "Do Not" List (Anti-Patterns)

Anti-Pattern	Why it fails in 2026	Modern Alternative
Instruction Mixing	Prone to prompt injection.	Use Structural Roles (System/User).
Thin System Prompts	Easily bypassed via roleplay.	Use Hierarchical Guardrails.
Unlimited Tool Use	Risk of massive data exfiltration.	Use Capability-Based Scopes.
Static API Keys	Leaks result in total system breach.	Use OIDC & Dynamic Rotation.
Unvalidated URLs	Direct path for indirect injection.	Use Sandboxed Content Fetching.

🛡️ Prompt Injection Defense

We use a "Defense-in-Depth" strategy:

Input Boundaries: --- USER DATA START ---.
Guardian Models: Fast pre-scanners for malicious patterns.
Content Filtering: Built-in safety settings on Gemini 3 Pro.

See References: Prompt Injection for blueprints.

🤖 Zero-Trust for AI Agents

Non-Human Identity (NHI): Verifiable identities for every agent.
WASM Sandboxing: Running generated code in isolated runtimes.
HITL (Human-in-the-Loop): Mandatory sign-off for financial or data-altering events.

📖 Reference Library

Detailed deep-dives into AI Security:

Prompt Injection Defense: Multi-layered isolation.
Agentic Zero-Trust: Managing autonomous actors.
Secure Server Actions: Bridging the frontend safely.
Audit Protocols: Monitoring agent behavior.

Updated: January 22, 2026 - 20:50

---name: secure-aidescription: Senior AI Security Architect. Expert in Prompt Injection Defense, Zero-Trust Agentic Security, and Secure Server Actions for 2026.---# 🔒 Skill: Secure AI (v1.1.0)## Executive SummaryThe `secure-ai` architect is the primary defender of the AI integration layer. In 2026, where AI agents have high levels of autonomy and access, the risk of **Prompt Injection**, **Data Leakage**, and **Privilege Escalation** is paramount. This skill focuses on building "Unbreakable" AI systems through multi-layered defense, structural isolation, and zero-trust orchestration.---## 📋 Table of Contents1. [Core Security Philosophies](#core-security-philosophies)2. [The "Do Not" List (Anti-Patterns)](#the-do-not-list-anti-patterns)3. [Prompt Injection Defense](#prompt-injection-defense)4. [Zero-Trust for AI Agents](#zero-trust-for-ai-agents)5. [Secure Server Action Patterns](#secure-server-action-patterns)6. [Audit and Compliance Monitoring](#audit-and-compliance-monitoring)7. [Reference Library](#reference-library)---## 🏗️ Core Security Philosophies1. **Isolation is Absolute**: User data must never be treated as system instruction.2. **Least Privilege for Agents**: Give agents only the tools they need for the current sub-task.3. **Human Verification of Destruction**: Destructive actions require a human signature.4. **No Secrets in Client**: All AI logic and keys reside in `server-only` environments.5. **Adversarial mindset**: Assume the user (and the agent) will try to bypass your rules.---## 🚫 The "Do Not" List (Anti-Patterns)| Anti-Pattern | Why it fails in 2026 | Modern Alternative || :--- | :--- | :--- || **Instruction Mixing** | Prone to prompt injection. | Use **Structural Roles (System/User)**. || **Thin System Prompts** | Easily bypassed via roleplay. | Use **Hierarchical Guardrails**. || **Unlimited Tool Use** | Risk of massive data exfiltration. | Use **Capability-Based Scopes**. || **Static API Keys** | Leaks result in total system breach. | Use **OIDC & Dynamic Rotation**. || **Unvalidated URLs** | Direct path for indirect injection. | Use **Sandboxed Content Fetching**. |---## 🛡️ Prompt Injection DefenseWe use a "Defense-in-Depth" strategy:- **Input Boundaries**: `--- USER DATA START ---`.- **Guardian Models**: Fast pre-scanners for malicious patterns.- **Content Filtering**: Built-in safety settings on Gemini 3 Pro.*See [References: Prompt Injection](./references/prompt-injection-defense.md) for blueprints.*---## 🤖 Zero-Trust for AI Agents- **Non-Human Identity (NHI)**: Verifiable identities for every agent.- **WASM Sandboxing**: Running generated code in isolated runtimes.- **HITL (Human-in-the-Loop)**: Mandatory sign-off for financial or data-altering events.---## 📖 Reference LibraryDetailed deep-dives into AI Security:- [**Prompt Injection Defense**](./references/prompt-injection-defense.md): Multi-layered isolation.- [**Agentic Zero-Trust**](./references/agentic-security-zero-trust.md): Managing autonomous actors.- [**Secure Server Actions**](./references/secure-server-actions-ai.md): Bridging the frontend safely.- [**Audit Protocols**](./references/security-audit-protocols.md): Monitoring agent behavior.---*Updated: January 22, 2026 - 20:50*

Frequently asked questions

Secure AI