Developer Tools & Repos Agent Skills for Claude Code

This skill should be used when choosing between flags, settings, or files for data storage, implementing document flags, registering…

This skill should be used when implementing dice rolling, creating Roll formulas, sending rolls to chat with toMessage, preparing…

This skill should be used when adding error handling to catch blocks, standardizing error handling across a codebase, or ensuring proper…

This skill should be used when registering hooks, creating custom hooks for module APIs, debugging hook execution, handling async in…

This skill should be used when implementing internationalization (i18n), creating language files, using game.i18n.localize/format, adding…

This skill should be used when adding features that update actors or items, implementing hook handlers, modifying update logic, or…

This skill should be used when creating or extending ActorSheet/ItemSheet classes, implementing getData or _prepareContext, binding events…

This skill should be used when implementing multiplayer synchronization, using game.socket.emit/on, creating executeAsGM patterns for…

This skill should be used when the user asks to "migrate to V13", "upgrade to Foundry V13", "update module for V13", "fix V13…

This skill should be used when importing Foundry classes, registering sheets, loading templates, enriching HTML, or using any Foundry API…

Functional programming patterns for Node.js/Deno backend development using fp-ts, ReaderTaskEither, and functional dependency injection

Expert-thinking profile for FPGA Engineer (RTL design / timing closure / CDC / SoC integration / lab bring-up (Vivado, Quartus)): Reasons…

End-of-story completion review. Reads the story file, verifies each acceptance criterion against the implementation, checks for GDD/ADR…

Framer Plugin SDK expert. Use when building, debugging, or modifying Framer plugins. Covers plugin modes, UI, permissions, data storage…

Create and maintain framework parser and spec packages for markuplint — package types, naming, and the architectural constraints that…

Production-ready patterns for React Native development with Expo, including navigation, state management, native modules, and…

Frappe-specific search and discovery guidance for finding benches, apps, remotes, sites, ports, hooks, DocTypes, builder DocTypes, and…

Declarative web framework for building browser-based 3D, VR, and AR experiences using HTML and entity-component architecture.

Comprehensive skill for Babylon.js 3D web rendering engine.

Blender to web export workflows for 3D models and animations.

Fast, lightweight 2D rendering engine for creating interactive graphics, particle effects, and canvas-based applications using WebGL/WebGPU.