tjn.claude/

LLM app development with RAG, prompt engineering, vector databases, and AI agents

Systematic 4-phase debugging methodology for complex, intermittent, or mysterious issues. Use when investigating bugs, race conditions, or unexplained failures.

OAuth 2.0, JWT, SSO, MFA, NextAuth/Clerk/Supabase Auth implementation patterns

Stripe, RevenueCat, subscription billing, webhooks, PCI compliance, and tax

Autonomous multi-agent coding with git worktree isolation, QA validation, and memory. Use for complex features requiring autonomous implementation.

Information security expertise for cybersecurity frameworks (NIST, ISO 27001), security architecture, incident response, vulnerability management, identity management, and cloud security. Use when designing security programs, responding to incidents, or assessing vulnerabilities.

REST and GraphQL API design best practices including OpenAPI specs. Use when designing APIs, documenting endpoints, or reviewing API architecture.

OpenTelemetry, structured logging, distributed tracing, alerting, and dashboards

Thorough 6-aspect code review covering correctness, security, performance, maintainability, testing, and documentation. Use for comprehensive PR reviews or code quality audits.

OAuth 2.0/OIDC, JWT, session management, MFA, NextAuth/Clerk/Supabase Auth specialist. Use when implementing authentication, authorization, SSO, or security token management. Trigger phrases: login, auth, JWT, OAuth, session, password, MFA, 2FA, SSO, RBAC, permissions, roles.

Systematic 4-phase debugging for complex and intermittent issues. Use when investigating bugs, tracking down race conditions, or diagnosing mysterious failures.

Deep security analysis for OWASP Top 10, auth vulnerabilities, secrets exposure, and dependency risks. Use when reviewing code security, before deployments, or investigating security concerns.

Next.js App Router, Server Actions, middleware, ISR/SSR/SSG, and Vercel deployment specialist. Use when building Next.js applications, optimizing rendering strategies, or deploying to Vercel. Trigger phrases: Next.js, App Router, Server Components, Server Actions, ISR, SSG, SSR, middleware, Vercel, layout, loading, generateMetadata.

Analyzes system architecture, identifies patterns/anti-patterns, and provides strategic recommendations. Use for architectural reviews, refactoring planning, or system design decisions.