vasilyu1983
@vasilyu1983
Public Skills
ai-llm
by vasilyu1983
Production LLM engineering skill. Covers strategy selection (prompting vs RAG vs fine-tuning), dataset design, PEFT/LoRA, evaluation workflows, deployment handoff to inference serving, and lifecycle operations with cost/safety controls.
agents-subagents
by vasilyu1983
Create and maintain AI coding agent subagents (.claude/agents/.md, .codex/agents/.md) with YAML frontmatter (name/description/tools/model/permissionMode/skills/hooks), least-privilege tool selection, delegation patterns (Task), context budgeting, and safety best practices.
product-antifraud
by vasilyu1983
Use when building log-based fraud detection for fintech applications, analyzing registration or authentication logs for behavioral patterns, bot detection, credential stuffing, velocity abuse, GDPR PII exposure in logs, or designing rule-based antifraud systems with tunable thresholds.
project-astrology-chinese
by vasilyu1983
Use when users ask about Chinese astrology, zodiac compatibility, BaZi (Four Pillars) birth charts, Five Elements, Zi Wei Dou Shu, Flying Stars Feng Shui, or Qi Men Dun Jia timing. Calculates signs from birth data, interprets charts, and provides forecasts. (project)
marketing-cro
by vasilyu1983
Use when optimizing conversion rates, designing A/B tests, or improving landing pages. Covers A/B testing methodology, landing page optimization, form design, statistical significance, funnel analysis, and CRO prioritization frameworks.
marketing-email-automation
by vasilyu1983
Email marketing automation for HubSpot/Klaviyo/Mailchimp (and similar ESPs): design trigger-based lifecycle workflows (welcome, onboarding, nurture, win-back, cart abandonment), define segmentation + suppression/frequency policies, troubleshoot deliverability (SPF/DKIM/DMARC, one-click unsubscribe, list hygiene), and measure incrementality/ROI (holdouts, RPE, retention economics).
data-sql-optimization
by vasilyu1983
"Production-grade SQL optimization for OLTP systems: EXPLAIN/plan analysis, balanced indexing, schema and query design, migrations, backup/recovery, HA, security, and safe performance tuning across PostgreSQL, MySQL, SQL Server, Oracle, SQLite."
agents-hooks
by vasilyu1983
Create event-driven hooks for AI coding agent automation (Claude Code, Codex CLI). Configure hook events in settings or frontmatter, parse stdin JSON inputs, return decision-control JSON, and implement secure hook scripts.
marketing-social-media
by vasilyu1983
Sustainable social media marketing and paid social: content systems, community management, influencer ops, social commerce, and attribution (2026).
ai-ml-data-science
by vasilyu1983
"End-to-end data science and ML engineering workflows: problem framing, data/EDA, feature engineering (feature stores), modelling, evaluation/reporting, plus SQL transformations with SQLMesh. Use for dataset exploration, feature design, model selection, metrics and slice analysis, model cards/eval reports, experiment reproducibility, and production handoff (monitoring and retraining)."
ai-agents
by vasilyu1983
Production-grade AI agent patterns with MCP integration, agentic RAG, handoff orchestration, multi-layer guardrails, observability, token economics, ROI frameworks, and build-vs-not decision guidance (modern best practices)
dev-api-design
by vasilyu1983
Production-grade API design patterns for REST, GraphQL, gRPC, and tRPC. Covers API architecture, OpenAPI/Swagger specs, versioning/deprecation, authentication/authorization, rate limiting, pagination, error models, contract testing, and developer documentation.
marketing-paid-advertising
by vasilyu1983
Paid advertising strategy for Google, Meta, TikTok, LinkedIn - campaign structure, bidding, audiences, creative, measurement, budget allocation, unit economics (CAC/LTV), revenue attribution, incrementality, payback period, and sales alignment.
document-docx
by vasilyu1983
Create, edit, and analyze Microsoft Word .docx files (reports, contracts, proposals) with styles, tables, headers/footers, template filling, content extraction, and conversion to HTML; support review workflows (comments/highlights) and inspect tracked changes via OOXML when needed using Python/Node.js (python-docx, docxtpl, mammoth.js, docx).
data-metabase
by vasilyu1983
"Metabase REST API automation and troubleshooting: authenticate (API key preferred, session fallback), export/upsert questions (cards) and dashboards, standardize visualization_settings, and run/export results."
project-qtax
by vasilyu1983
"UK taxation expert for HMRC compliance, Making Tax Digital (MTD ITSA/VAT) and Self-Assessment: explain tax treatment; compute income tax/NI/dividend/CGT with band-by-band breakdown; advise on deadlines/forms/penalties; and support MTD developer integration + tax software UX/flows. Use WebSearch (gov.uk/HMRC) to verify current rates and mandation timelines. (project)"
claude-code-hooks
by vasilyu1983
Create event-driven hooks for Claude Code automation. Configure hook events in settings or frontmatter, parse stdin JSON inputs, return decision-control JSON, and implement secure hook scripts.
claude-code-skills
by vasilyu1983
Comprehensive reference for creating Claude Code skills with progressive disclosure, SKILL.md structure, references/ organization, frontmatter specification, and best practices for modular capability development.
claude-code-commands
by vasilyu1983
Create slash commands for Claude Code with $ARGUMENTS handling, agent invocation patterns, and template best practices. Reference for building user-triggered workflow shortcuts.
ai-rag
by vasilyu1983
Complete RAG and search engineering skill. Covers chunking strategies, hybrid retrieval (BM25 + vector), cross-encoder reranking, query rewriting, ranking pipelines, nDCG/MRR evaluation, and production search systems. Modern patterns for retrieval-augmented generation and semantic search.
project-astrology-numerology
by vasilyu1983
Use when developing astrology/numerology apps, validating chart calculations (timezone/DST, quadrant handling), or producing psychology-first interpretations. Expert advisor (30+ years) catches common bugs (D026-D028) and defines accuracy/test standards. (project)
claude-code-mcp
by vasilyu1983
Configure and build Model Context Protocol (MCP) servers for Claude Code integration. Set up database, filesystem, git, and API connections. Build custom MCP servers with TypeScript/Python SDK, implement tools and resources, configure transports (stdio, HTTP), and deploy for production.
project-real-estate-agent
by vasilyu1983
Use for London residential property due diligence and investment second opinions (Zone 1-3 focus): mortgage comparison, conveyancing guidance, market/regeneration research, and developer/agent diligence. Invoke when evaluating flats, BTL yields, leasehold risk, or sanity-checking a deal. Not legal/financial advice. (project)
project-aeo-monitoring-tools
by vasilyu1983
Build custom AI search monitoring tools for competitive AEO analysis. Covers API access, scraping architecture, legal compliance, and cost estimation.