OWASP

Security-focused review of native Android and iOS mobile app source code against OWASP MASVS v2.1.0. Use when reviewing mobile codebases, mobile PR diffs, or auditing a mobile module.

Audit AI agent configurations for security risks — excessive permissions, prompt injection surfaces, data exfiltration paths, and missing guardrails. Use when reviewing CLAUDE.md files, MCP configs, agent orchestration code, or any AI agent setup.

Assess agentic AI applications against the OWASP Top 10 for Agentic Applications 2026. Use when reviewing autonomous AI agents, multi-agent systems, or agentic workflows for security risks including goal hijacking, tool misuse, privilege abuse, and rogue…

Comprehensive LLM security assessment against OWASP Top 10 for LLM Applications 2025. Use when reviewing LLM-integrated applications, RAG pipelines, chatbots, AI agents, or GenAI features. Covers prompt injection, data poisoning, supply chain, excessive…

Security review of MCP (Model Context Protocol) server implementations and configurations. Use when auditing MCP server source code, evaluating third-party MCP servers before installation, or reviewing Claude Code MCP integrations for overpermissioning,…

Test LLM-integrated applications against known prompt injection techniques, evasion methods, and attack intents using the Arcanum PI Taxonomy. Use when red-teaming AI apps, validating guardrails, or deepening LLM01 (Prompt Injection) assessments.

Comprehensive API security review against OWASP API Security Top 10 (2023). Use when reviewing OpenAPI/Swagger specs, auditing REST/GraphQL/gRPC implementations, testing authentication mechanisms, or checking API gateway configurations. Covers BOLA/IDOR,…

Security-focused code review mapped to OWASP Top 10 and ASVS. Use when reviewing pull requests, auditing files or modules for vulnerabilities, or performing pre-merge security gate checks. Covers injection, auth, authorization, cryptography, data exposure,…

Write code that stays defensible as threats and requirements change. Use for any application code - features, endpoints, input handling, data access, auth, error handling, state, concurrency - even when security is not explicitly requested.

Deep dive into the FIASSE Securable Software Engineering Model (SSEM) for context-heavy, architecturally complex code work - designing or reviewing trust boundaries, authentication or authorization systems, multi-service data flows, dependency architecture,…

Perform Rapid Developer-driven Threat Modeling (RaD-TM) on a software feature — a lightweight, six-stage method that turns a feature description, user story, design doc, API spec, or source/infrastructure code into a complete threat model: data-flow model,…

Author, review, version, and maintain RaD-TM Threat Templates — the expert-curated lists of threats and pre-approved controls that ground Rapid Developer-driven Threat Modeling and keep its output consistent. Use this skill whenever someone (typically a…

Assign real MASTG IDs to draft files that use fake placeholder IDs (e.g. MASTG-KNOW-0x01, MASTG-BEST-0x56). Use when finishing a PR that introduces new MASTG components with placeholder IDs, or when asked to "fix fake IDs", "assign real IDs", or "use next…

Review an OWASP Threat Model Library JSON file (threat-models/**/*.json in this repo) for diagram/data-flow consistency, architecture-to-threat traceability, missing severe threats, and control coverage of critical/high threats per the OWASP Threat Modeling…