go

Testable filesystem code in Go with spf13/afero — inject afero.Fs, test in memory with MemMapFs, layer ReadOnlyFs, CopyOnWriteFs and BasePathFs, and know where MemMapFs differs from a real disk.

1 skill

Definitive guide to building CLI applications with Cobra and Viper — command-first architecture, configuration management, environment variable binding, and in-memory CLI testing. Written by spf13, the original creator of both libraries.

1 skill

Safe file operations in Go using spf13/fileflow (move, copy, rename across filesystems with conflict-safe naming) and spf13/pathologize (make filenames and path segments safe on every OS).

1 skill

Release engineering for Go modules and applications — semantic versioning, breaking-change detection, deprecation conventions, go.mod hygiene, and binary distribution with GoReleaser.

1 skill

Review Go design documents before implementation begins — catches over-engineering, missing error paths, interface misuse, and Cobra/Viper convention violations while a plan is still cheap to change.

1 skill

Building native desktop applications in Go with Wails v2 (stable) and v3 (alpha). CRITICAL: v2 and v3 have incompatible APIs that LLMs constantly blend — this skill detects the version and follows only that version's patterns.

1 skill

Core skills library for Claude Code: TDD, debugging, collaboration patterns, and proven techniques

15 skills · hooks

Easily create custom hooks to prevent unwanted behaviors by analyzing conversation patterns or from explicit instructions. Define rules via simple markdown files.

1 skill · 4 commands · 1 agent · hooks

Design fluency for frontend development. 1 skill with 24 commands (/impeccable polish, /impeccable audit, /impeccable critique, etc.) and curated anti-pattern detection.

1 skill · 4 agents · hooks

Core Ruflo MCP tools, commands, and Claude Code orchestration patterns

5 skills · 2 commands · 4 agents · 1 MCP server · hooks

Editorial diagrams in your brand, as self-contained HTML and SVG. Architecture, flowcharts, sequence, state machines, ER and database schemas, timelines, swimlanes, org charts, Gantt, Wardley maps, user journeys, service blueprints, UML class, lifecycle phase maps, and charts from bar, line and scatter to Sankey, treemap and heatmap, plus many more. Redraws draw.io, Mermaid, Excalidraw and PlantUML files. Exports SVG and PNG.

1 skill · 7 commands

Modern Python development with Python 3.12+, Django, FastAPI, async patterns, and production best practices

16 skills · 1 command · 3 agents