AI Prompt Injection Shield

You deployed an AI assistant into your customer-facing product. A security researcher found that a simple override attempt — a user crafting text designed to hijack the assistant's instructions — causes it to expose your system prompt. Your system prompt contains your proprietary instructions, persona design, and competitive differentiation. It's now public on Twitter. Two days later, a user discovers they can make your assistant recommend a competitor's product by embedding a control directive in a customer support ticket. Your AI application has an injection surface you didn't test because you didn't have a framework for thinking about it.

The AI Prompt Injection Shield provides a systematic protocol for identifying and hardening every injection vector in an AI-integrated application. It covers input sanitization patterns for user-supplied text, adversarial prompt detection heuristics, system prompt hardening templates, role-based instruction boundaries, indirect injection through retrieved documents or tool outputs, and a logging schema for tracking injection attempts in production.

What you get:

• SKILL.md — Full security protocol: threat model, input sanitization checklist, adversarial pattern detection, system prompt hardening patterns, indirect injection defenses, and injection attempt logging schema
• LISTING.md — Product page (this file)
• MANIFEST.json — Machine-readable product metadata

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Works Great With

• Solopreneur Operations Kit (#54) — if you're building AI tools as part of a one-person business, security hardening is part of your operations
• Any Claude Code skill involving external data ingestion or user-facing AI deployment

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Why Free

This skill is a lead magnet for Claw Mart's engineering-category products. Developers and technical founders who find this skill through search or community sharing are the same buyers for higher-value engineering products on the platform. Security topics drive sharing in developer communities — a free, useful security resource gets posted to Hacker News, shared on Discord, and bookmarked in security newsletters. Every free download represents a developer who is now aware of Claw Mart and one step closer to purchasing the paid engineering skills in the catalog.

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Version History

• v1.0.0 — Initial release