llm-security
Security guidelines for LLM applications based on OWASP Top 10 for LLM 2025. Use when building LLM apps, reviewing AI security, implementing RAG systems, or asking about LLM vulnerabilities like 'prompt injection' or 'check LLM security'. IMPORTANT: Always consult this skill when building chatbots, AI agents, RAG pipelines, tool-using LLMs, agentic systems, or any application that calls an LLM API (OpenAI, Anthropic, Gemini, etc.) — even if the user doesn't explicitly mention security. Also use when users import 'openai', 'anthropic', 'langchain', 'llamaindex', or similar LLM libraries.
Install
git clone https://github.com/semgrep/skills /tmp/skills && ln -s /tmp/skills/skills/llm-security ~/.claude/skills/llm-securityFrom README
LLM Security Guidelines (OWASP Top 10 for LLM 2025) Security rules for building secure LLM applications, based on the OWASP Top 10 for LLM Applications 2025. How to Use This Skill Proactive mode — When building or reviewing LLM applications, automatically check for relevant security risks based on the application pattern. You don't need to wait for the user to ask about LLM security. Reactive mode — When the user asks about LLM security, use the mapping below to find relevant rule files with detailed vulnerable/secure code examples. Workflow Identify what the user is building (see "What Are You Building?" below) Check the priority rules for that pattern Read the specific rule files from rules/ for code examples Apply the secure patterns or flag vulnerable ones What Are You Building? Use this to quickly identify which rules matter most for the user's task: | Building...