83,201 skills sorted by stars.
Erlang/Elixir property-based testing with PropEr, PropCheck, and StreamData frameworks
Property-based testing core concepts, property taxonomy, and strategy selection (language-agnostic)
Go property-based testing with rapid and gopter frameworks
Haskell property-based testing with QuickCheck and Hedgehog frameworks
JVM property-based testing with jqwik, ScalaCheck, and ZIO Test frameworks
Python property-based testing with Hypothesis framework, strategies, and pytest integration
Rust property-based testing with proptest, quickcheck, and bolero frameworks
Stateful property-based testing patterns, model-based testing, and anti-patterns
TypeScript/JavaScript property-based testing with fast-check framework and arbitraries
Evidence quality validation and decision gate criteria for product discovery reviews
Structured persona creation and JTBD analysis methodology - persona templates, ODI job step tables, pain point mapping,...
Foundational platform engineering knowledge from key references -- Continuous Delivery, SRE, Accelerate, Team Topologies...
Requirements quality critique dimensions for peer review - confirmation bias detection, completeness validation, clarity...
Review dimensions and bug patterns for journey artifact reviews
Blameless post-mortem structure, incident timeline reconstruction, response evaluation, and organizational learning
Hybrid margin-safe pricing (Base Floor + Value Capture + Success Fee), Good/Better/Best tiering, Cialdini anchoring, Ack...
Monitoring, observability, operational procedures, CI/CD lessons learned, and quality gate definitions. Load when assess...
Agent safety boundaries - input validation, output filtering, scope constraints, and document creation policy
Progressive L1-L6 refactoring hierarchy, 22 code smell taxonomy, atomic transformations, test code smells, and Fowler re...
Property-based testing strategies, mutation testing, shrinking, and combined PBT+mutation workflow for test quality vali...
B2B proposal generation templates, ROI calculator structures, and deal packaging patterns for training, consulting, and...
Quality gates - 11 commit readiness gates, build/test protocol, validation checkpoints, and quality metrics
Type-specific validation checklists, six quality characteristics, and quality gate thresholds for documentation assessme...
SQL and NoSQL query optimization techniques, indexing strategies, execution plan analysis, JOIN algorithms, cardinality...
Applies the Refactoring Priority Premise (RPP) levels L1-L6 for systematic code refactoring. Use when improving code qua...
Gathers knowledge from web and files, cross-references across multiple sources, and produces cited research documents. U...
Research output templates, distillation workflow, and quality standards for evidence-driven research
Dispatches an expert reviewer agent to critique workflow artifacts. Use when a roadmap, implementation, or step needs qu...
YAML output format and approval criteria for platform design reviews. Load when generating review feedback.
Detailed review process, v2 validation checklist, and scoring methodology for agent definition reviews
Selects a quality-vs-token-consumption profile (lean, standard, thorough, exhaustive, custom, inherit) and persists it g...
Creates a phased roadmap.json for a feature goal with acceptance criteria and TDD steps. Use when planning implementatio...
Roadmap concision rules, step decomposition efficiency, AC abstraction guidelines, and step-to-scenario mapping. Load wh...
Roadmap-specific validation checks for architecture reviews. Load when reviewing roadmaps for implementation readiness.
Root cause analysis and debugging
Critique dimensions and scoring for research document reviews
Architecture quality critique dimensions for peer review. Load when invoking solution-architect-reviewer or performing s...
Architecture quality critique dimensions for peer review. Load when performing architecture document reviews.
Reviewer critique dimensions for peer review - implementation bias detection, test quality validation, completeness chec...
Catalog of UI patterns from games, anime, and films with analysis of why they work -- structural principles extractable...
25 real-world system design case studies condensed from Alex Xu's System Design Interview Vol 1 and 2 - requirements, ar...
4-step system design framework with back-of-envelope estimation, scaling ladder, and common pitfalls
Core distributed systems patterns - load balancing, caching, sharding, consistent hashing, message queues, rate limiting...
Advanced distributed patterns - event sourcing, CQRS, saga, stream processing, append-only log, exactly-once delivery, s...
Database security (encryption, access control, injection prevention), data governance (lineage, quality, MDM), and compl...
Security design principles, STRIDE threat modeling, OWASP Top 10 architectural mitigations, and secure patterns. Load wh...
Multi-channel outreach sequence design — 12-touch 22-day framework with tiered personalization and signal-based triggers
Shared artifact registry, common artifact patterns, and integration validation. Load when tracking data that flows acros...