lexler
23 verified skills4,968 total stars
skill-creator
Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.
testing216
refactoring-team
Iterative code refactoring through progressive lenses via a worker-reviewer agent team.
development216
ai-patterns
Reference patterns for augmented coding with AI. Use when discussing AI coding patterns, anti-patterns, obstacles, context management, steering AI, or looking up Lexler's patterns collection.
data-ai216
writing-statuslines
Writes Claude Code status line scripts. Use when creating, customizing, or debugging statusline configurations.
development216
creating-process-files
Creates process files - text as code instructions for reliable AI workflows. Use when creating new process files.
development216
c4-diagrams
Creates C4 architecture diagrams for designing, documenting, or understanding software architecture. Use when working through system design, mapping existing codebases, or visualizing structure at any level from system landscape down to code.
development216
align
Presents a proposed approach in progressive confirmable chunks with recommended decisions and alternatives. Use when aligning on a design, plan, or technical approach before implementation.
testing216
hexagonal-architecture
Applies hexagonal (ports & adapters) architecture. Use when designing application structure, separating domain from infrastructure, creating testable boundaries, or when user mentions ports, adapters, hexagonal, or clean architecture.
development216
git-worktrees
Creates git worktrees for parallel development. Use when creating a git worktree, setting up multiple working directories, or working on features in parallel.
development216
writing-bash-scripts
Bash script style guide. Always use when writing bash scripts, shell scripts, or CLI bash tools.
tools216
using-uv
Python package and project management with UV. Use when creating Python scripts, initializing projects, or managing dependencies.
development216
event-modeling
Designs systems using Event Modeling.
data-ai216
refactoring
Refactoring process. Invoke immediately when user or document mentions refactoring, or proactively when code gets too complex or messy.
development216
growing-outside-in-systems
Drive feature development using Outside-In TDD with Hexagonal Architecture. Design emerges through inline code, in-memory fakes, interface extraction, and deferred I/O. Use when building features, writing tests, or structuring backend services. Triggers on: TDD, outside-in, hexagonal, ports and adapters, emergent design, acceptance test, component test, walking skeleton, in-memory fakes, component, contract test, adapter, fast tests, sub-second feedback. Language-agnostic (Go, Rust, Python, TypeScript, Java, C#).
development216
approval-tests
Writes approval tests (snapshot/golden master testing) for Python, JavaScript/TypeScript, or Java. Use when verifying complex output, characterization testing legacy code, testing combinations, or working with .approved/.received files.
development216
refinement-loop
Iterative refinement through multiple passes. Use when the user asks to 'meditate on', 'distill', 'refine', or 'iterate on' something, or proactively when a problem benefits from multiple passes rather than a single attempt.
tools216
collaborative-design
Designs software features collaboratively through visual scenarios and iterative refinement. Use when designing features, tools, UIs, workflows, or any system before implementation.
tools216
bdd-with-approvals
Scannable BDD tests written in domain language. Use when doing BDD.
testing216
nullables
Writes tests without mocks using Nullables. Use when writing tests, especially testing code with external I/O (HTTP, files, databases, clocks, random numbers), designing infrastructure wrappers or replacing mocking libraries.
development216
launching-agent-teams
Launches agent teams with structured roles and task decomposition. Use when asked to create a team, spawn teammates, or coordinate multiple agents in parallel.
data-ai216
tdd
Test-driven development (TDD) process used when writing code. Use whenever you are adding any new code, unless the user explicitly asks to skip TDD or the code is exploratory/spike.
development216
socratic-learning
Facilitates deep, structured learning of a topic — gathering source material, assessing the learner's gaps, then teaching through guided Socratic sessions. Use when someone wants to genuinely study or be tutored on a subject over time, not get a quick answer.
testing216
creating-hooks
Creates Claude Code hooks.
development216