OSS AI Skills Collection

A comprehensive collection of AI assistant skills (SKILL.md files) following the skillreg.dev specification, designed to help to use and extend open-source projects (for plugins). Note: we test the majority of them and improving based on asking to the agents to extend the skills based on their experience.

What is this?

This repository provides reusable skill definitions that can be loaded into AI coding assistants. Each skill encapsulates domain knowledge, best practices, and workflows for specific tasks in open-source development.

Available Skills

Extend

Skill	Description	Lines	Tags
Firefox Extension	Build WebExtensions for Firefox - MV2/MV3, APIs, web-ext, AMO publishing	796	firefox, webextension, browser-extension, mozilla, amo, manifest-v3
GIMP Plugin	GIMP 3.0+ plugins with Python 3 - GEGL operations, image manipulation, UI dialogs	1,156	python, gimp, image-processing, graphics, plugin, gegl
Kate Plugin	Develop C++ plugins for Kate - KTextEditor, CMake/ECM, QThread agent architecture, IThreadStorage, QTest	498	kate, kde, text-editor, plugin, c++, qt, kde-frameworks
KDE Plasmoid	Build Plasma 6 widgets - Python backend, QML UI, deployment, KDE Store publishing, troubleshooting	1,168	kde, plasma, plasmoid, widget, qml, qt, desktop
mGBA Scripting	Lua scripting for mGBA emulator - game automation, memory hacking, cheats, callbacks	~800	lua, emulator, gba, gameboy-advance, scripting, memory-hacking
OpenCode Plugin	Develop plugins for OpenCode AI agent - v1.18+ Plugin Contract, crash-prevention rules, MCP, tools, SDK, HTTP REST API, subagent lifecycle, event handler patterns	1,166	opencode, plugin, ai-agent, mcp, tool-development
OpenRCT2 Plugin	JavaScript/TypeScript plugins for OpenRCT2 - game actions, UI windows, hooks, multiplayer	877	openrct2, plugin, javascript, typescript, game-modding, rollercoaster-tycoon
Playwright Visual Regression	Visual regression testing with Playwright - toHaveScreenshot(), Python/TS, VUDA MCP, masking, thresholds, CI/CD	1,056	playwright, visual-regression, screenshot, testing, e2e, vuda, vrt
Thunderbird Extension	Build MailExtensions for Thunderbird - messenger.* APIs, compose, ATN	1,067	thunderbird, mailextension, email-extension, mozilla, atn, messenger-api
Vagrant	Development environments - providers, provisioners, multi-machine, plugins, troubleshooting	1,097	vagrant, virtualization, devops, virtualbox, infrastructure
Zed Editor	Zed extensions - Rust/Wasm plugins, LSP, Tree-sitter, themes, MCP, slash commands, known issues, references	1,135	zed, editor, extension, rust, wasm, tree-sitter, lsp, plugin

Frameworks

Skill	Description	Lines	Tags
aiohttp	Async HTTP server/client - WebSocket, SSE, middleware, JWT auth, logging, error handling, pytest-aiohttp testing	1,540	python, http, async, server, websocket, sse
android-apk-patch	Modify, repackage, test Android APKs - split APK handling, GApps workarounds, signing, Frida instrumentation, redroid/Waydroid testing	1,565	android, apk, patching, smali, signing, split-apk, gapps, frida, redroid, waydroid
BPCore Engine	Lua game framework for GBA - API reference, sprites, entities, collision, audio, save/load SRAM, multiplayer protocol	873	lua, gba, game-engine, gameboy-advance
Celery	Distributed task queue - Redis/RabbitMQ brokers, periodic tasks, Django integration	1,250	python, task-queue, async, distributed, celery
Django (Security)	CSRF, authentication, custom permission backends, per-object permissions, sessions, password handling, middleware, Django 6.0 compatibility	1,682	python, django, web-framework, async, hub
Django Bolt	Rust-powered high-performance API framework - 60k+ RPS, decorator routing, built-in auth, async ORM	2,567	python, django, bolt, api, rust, performance, async
Django Celery	Django Celery integration - distributed tasks, django-celery-beat scheduling, monitoring	~700	python, django, celery, task-queue, periodic-tasks, django-celery-beat
Django HTMX	Build modern dynamic web apps with Django and htmx - partial rendering, HTMX-specific responses, querystring tag, CSP nonce support, Django 6.0 compatible	487	django, htmx, python, web, frontend, partial-rendering
Django Ninja	Fast REST APIs with Pydantic v2 - schemas, authentication, pagination, context support, OpenAPI docs, Django 6.0 compatible	1,884	python, django, rest-api, pydantic, openapi, type-safe
Django Storages	Django cloud storage - S3, Azure, Google Cloud, boto3, STORAGES dict, AWS_S3_TRANSFER_CONFIG, Django 6.0 compatible	741	python, django, storage, s3, azure, gcs, cloud
Django Unfold	Modern Django admin theme - @display decorator, charts, CSP nonce, customization, actions, filters, Django 6.0 compatible	670	python, django, admin, unfold, theme, dashboard
django-allauth	django-allauth 65.x - local accounts, OAuth, email verification, MFA, OIDC provider (allauth.idp.oidc), Django 6.0 compatible	605	python, django, authentication, oauth, mfa, allauth, oidc
django-filter	Django filtering library 25.x - querysets, DRF integration, custom filters, FilterSet, explicit fields=all, Django 6.0 compatible	518	django, django-filter, filtering, django-rest-framework, queryset
httpx	Modern async HTTP client - sync/async API, HTTP/2, connection pooling, retries, v0.28.1 stable (v1.0 in development)	905	python, http, async, client, network
LlamaIndex	LLM applications 0.14 - RAG, retrievers, agents, vector stores, Workflow engine, streaming, evaluation	1,223	python, llm, rag, llamaindex, ai, vector-store, agents, workflow
Pydantic	Data validation - TypeAdapter, RootModel, discriminated unions, error handling, serialization, settings, FastAPI	1,499	python, validation, pydantic, serialization, settings
pygame	Python 2D game development - sprites, surfaces, events, sound, fonts, game loops, collision	549	python, game-development, 2d-games, pygame, graphics
PyQt	Desktop applications - PyQt5/PyQt6/PySide6, widgets, signals, layouts, threading, testing	1,937	python, qt, pyqt, pyside, gui, desktop, hub
↳ pyqt-core	QtCore fundamentals - signals, slots, properties, timers, settings, file I/O	487	python, qt, pyqt, core, signals
↳ pyqt-dialogs	Dialogs - QFileDialog, QMessageBox, custom dialogs, Qt 6	518	python, qt, pyqt, dialogs, ui
↳ pyqt-multimedia	Audio/video playback, camera access, media recording, error handling, codec support	1,773	python, qt, pyqt, multimedia, audio, video
↳ pyqt-styling	QSS styling - selectors, properties, dark theme	668	python, qt, pyqt, styling, qss, css
↳ pyqt-testing	Testing - pytest-qt, qtbot, waitSignal, fixtures	444	python, qt, pyqt, testing, pytest
↳ pyqt-threading	Threading - QThread, QThreadPool, QRunnable, moveToThread, thread safety, lifecycle, pitfalls	931	python, qt, pyqt, threading, concurrency
↳ pyqt-widgets	QtWidgets - buttons, inputs, containers, item views, layouts	610	python, qt, pyqt, widgets, gui
pytest	Python testing 9.0 - fixtures, parametrization, asyncio, Django, pathlib.Path hooks, CI strict mode, mocking, coverage, parallel	1,610	python, testing, tdd, fixtures, unit-test
Qt C++	Cross-platform desktop apps - signals/slots, QML, threading, CMake, deployment	1,204	qt, c++, gui, desktop, qt6, cmake, cross-platform, qml
ratatui	Rust TUI framework - widgets, layouts, design principles, accessibility, MVU architecture, ecosystem, tui-logger, recipes	2,598	rust, tui, terminal, cli, user-interface, ecosystem
SQLAlchemy	Python SQL toolkit/ORM - queries, CTEs, window functions, async, Alembic, migration testing, PostgreSQL optimization, non-integer PKs	1,619	python, orm, database, sql, alembic, async
Tailwind CSS	Utility-first CSS framework v4 - CSS-first config, @theme directive, Oxide engine, Lightning CSS, v3 migration	812	css, frontend, responsive, design-system, utility-first
TurboDRF	Django REST mixin - TurboDRFMixin, auto CRUD, role-based permissions, tenancy, security gates	713	python, django, rest-api, turbodrf, permissions

Tool

Skill	Description	Lines	Tags
ast-grep	AST-based code search and rewriting - structural patterns, linting, refactoring, multi-language	531	ast-grep, code-search, linting, refactoring, cli, ast
Docker	Containers - Dockerfile, docker-compose, BuildKit, multi-stage builds, production, CI/CD, security	432	docker, docker-compose, containerization, deployment, ci-cd
Redis	In-memory database (redis-py 8.0) - RESP3 protocol, async API, Redis Stack (Search/JSON/TimeSeries), caching, pub/sub, sessions, rate limiting	509	redis, database, caching, pub-sub, sessions, rate-limiting, resp3, async
SQLite	Embedded database - SQL queries, schema design, Python integration, FTS5, ANALYZE, Litestream/restic backups, concurrent access	922	sqlite, database, sql, embedded, python
Waydroid	Android on Linux - container-based Android with Wayland, GPU acceleration, GAPPS	~657	waydroid, android, container, linux, wayland, gapps

Languages

Skill	Description	Lines	Tags
Rust Common Pitfalls	Rust pitfalls - compiler errors, struct constructors, test organization, module splitting, thiserror error design, panic elimination	1,208	rust, pitfalls, best-practices, common-errors, testing

Skill Format

Each skill follows the skillreg.dev specification:

---
name: skill-name
description: Short description of the skill
metadata:
  author: Author Name
  version: 1.0.0
  tags:
    - tag1
    - tag2
---

# Skill Title

[Markdown content with guidelines, examples, references...]

How to Use

1. Browse available skills in the contribute/, extend/, or frameworks/ directories
2. Copy the SKILL.md to your project or load it into your AI assistant
3. Reference the skill when asking for help with that domain
4. Customize as needed for your specific project