Software Development Skills

Modern Angular (v20+) expert with deep knowledge of Signals, Standalone Components, Zoneless applications, SSR/Hydration, and reactive patterns.

Chaos engineering analysis that maps every external dependency and I/O boundary, then generates tests for timeouts, connection failures, corrupt responses, disk errors, OOM, partial failures, and rate limiting. Runs the tests and reports which failures crash the app vs degrade gracefully. Use when hardening error handling, testing resilience before launch, finding missing timeouts or retries, validating circuit breakers, or stress-testing third-party API failures.

Renders interactive charts in the browser using Chart.js. Use when the user wants to visualize data, plot numbers, draw a bar chart, line chart, pie chart, doughnut chart, radar chart, graph metrics, compare benchmarks, show a cost curve, or display a time series. Always renders live in browser — never as a static image.

Show how many tokens engram has saved in this session, this week, and across all indexed projects. Use when the user asks about token usage, savings, costs, or wants a digest report.

Structured debugging session — reproduce, isolate, diagnose, and fix.

Django security - CSRF protection, authentication, sessions, login/logout, password handling, middleware, protected…

FastAPI best practices and conventions. Use when working with FastAPI APIs and Pydantic models for them. Keeps FastAPI code clean and up to date with the latest features and patterns, updated with new versions. Write new code or refactor and update old code.

Use when feature implementation is complete and the branch is ready for final validation, PR creation, or merge.

GraphQL schema design, resolvers, directives, subscriptions, and best practices for API development.

Change GSD-CC settings like language. Updates CLAUDE.md so changes take effect immediately. Use when user says /gsd-cc-config, wants to change language, or asks about GSD-CC settings.

Manage codemap integration — 'check' audits installation health (scan-query reachable, index fresh, injection present), 'init' onboards codemap by discovering skills/agents, recommending injection sites, and wiring them in.

Use when you need to lint the codebase and auto-fix issues - detects linter, runs it, and fixes what it can.

Use when creating or editing files in pkg/migration/. Covers cross-DB type safety across MySQL/PostgreSQL/SQLite, DDL error handling, time-column conventions, and path sanitization.

Best practices for monorepo development with TypeScript, React, Next.js, Expo, Turbo, and related…

Create network topology diagrams using PlantUML syntax with mxgraph device icons (Cisco, Citrix, etc.). Best for LAN/WAN layouts, datacenter interconnects, and physical/logical network design.

Provides domain-specific best practices for Node.js development with TypeScript, covering type stripping, async patterns, error handling, streams, modules, testing, performance, caching, logging, and more. Use when setting up Node.js projects with native TypeScript support, configuring type stripping (--experimental-strip-types), writing Node 22+ TypeScript without a build step, or when the user mentions 'native TypeScript in Node', 'strip types', 'Node 22 TypeScript', '.ts files without compilation', 'ts-node alternative', or needs guidance on error handling, graceful shutdown, flaky tests, profiling, or environment configuration in Node.js. Helps configure tsconfig.json for type stripping, set up package.json scripts, handle module resolution and import extensions, and apply robust patterns across the full Node.js stack.

Agents Observe dashboard and server…

OpenStack backup operations skill for protecting cloud infrastructure through systematic backup strategies and disaster recovery procedures. Covers database backups (MariaDB full and incremental with mariabackup), configuration backups (globals.yml, inventory, Fernet keys), volume snapshots (Cinder LVM snapshots), image exports (Glance), instance snapshots (Nova), backup encryption (GPG/OpenSSL), retention policies (daily/weekly/monthly rotation), restore procedures (database point-in-time recovery, service rebuild), RPO/RTO planning, and disaster recovery drills. Use when planning backup strategy, scheduling automated backups, testing restore procedures, or executing disaster recovery.

Payment and billing integration --…

Static-analysis penetration test that hunts for exploitable vulnerabilities with proof-of-concept payloads and fix code. Covers SQL and NoSQL injection (string concatenation, raw queries, operator injection), XSS (reflected, stored, DOM-based, template injection, dangerouslySetInnerHTML), authentication bypass (missing auth middleware, JWT algorithm confusion, predictable tokens, OAuth state CSRF), authorization flaws (IDOR, mass assignment, horizontal/vertical privilege escalation), path traversal and file inclusion (unsanitized file paths, upload validation, LFI), command injection (exec, system, subprocess with user input), CSRF and SSRF (missing SameSite, user-supplied URLs, open redirects), hardcoded secrets (AWS keys, private keys, JWT secrets, connection strings, .env in git), and insecure deserialization (pickle, yaml.load, XXE, ObjectInputStream). Maps full attack surface with route inventory. Use for pre-release security validation, finding exploitable bugs, or generating penetration test evidence.

Crafts optimized, copy-ready prompts for any AI tool — LLMs, coding agents, image generators, workflow tools.

Core React 19 patterns including hooks, Suspense, lazy loading, component structure, TypeScript best practices, and performance optimization. Use when working with React components, hooks, lazy loading, Suspense boundaries, or React-specific TypeScript patterns.

Guide users through creating Agent Skills for Claude Code.

Add file uploads and object storage to my app — set up AWS S3, Google Cloud Storage, Cloudflare R2, or Supabase Storage with presigned URLs, direct browser uploads, multipart chunked uploads, file type validation, lifecycle policies, CORS configuration, and CDN…