Backtest Expert

Expert guidance for systematic backtesting of trading strategies. Use when developing, testing, stress-testing, or validating quantitative trading strategies. Covers "beating ideas to death" methodology, parameter robustness testing, slippage modeling, bias prevention, and interpreting backtest results. Applicable when user asks about backtesting, strategy validation, robustness testing, avoiding overfitting, or systematic trading development.

Ethereum Wingman

Ethereum development tutor and builder for Scaffold-ETH 2 projects. Triggers on "build", "create", "dApp", "smart contract", "Solidity", "DeFi", "Ethereum", "web3", or any blockchain development task. ALWAYS uses fork mode to test against real protocol state.

test-driven-development

Unified TDD skill with three input modes — from spec, from task, or from description. Enforces test-first development using repository patterns, with proptes...

DevRel & Developer Advocacy Engine

Provides expert guidance to build, grow, and measure developer programs that enhance community engagement, product adoption, and ecosystem growth.

Godot 4.6 C# Development

Godot 4.x game development with C#/.NET, covering best practices, architecture patterns, performance optimization, and common pitfalls. Use when working on G...

csharp-developer

Expert C# developer specializing in modern .NET development, ASP.NET Core, and cloud-native applications. Masters C# 12 features, Blazor, and cross-platform...

Modern Ethereum & EVM Developer

Expertise in modern Ethereum and EVM development, including smart contracts, Layer 2s, standards, agent infrastructure (ERC-8004, x402), gas optimization, se...

Ralph Mode - Autonomous Development Loops

Autonomous development loops with iteration, backpressure gates, and completion criteria. Use for sustained coding sessions that require multiple iterations, test validation, and structured progress tracking. Supports Next.js, Python, FastAPI, and GPU workloads with Ralph Wiggum methodology adapted for OpenClaw.

NextJS Frontend Development + Integration

Generate production-ready Next.js projects with TypeScript, Tailwind CSS, shadcn/ui, and API integration. Use when the user asks to build, create, develop, or scaffold a Next.js application, web app, full-stack project, or frontend with backend integration. Prioritizes modern stack (Next.js 14+, TypeScript, shadcn/ui, axios, react-query) and best practices. Also triggers on requests to add features, integrate APIs, or extend existing Next.js projects.

Obsidian Plugin Development

Create and develop Obsidian plugins from scratch. Use when building a new Obsidian plugin, scaffolding from the sample-plugin-plus template, or developing plugin features. Covers project setup, manifest configuration, TypeScript development, settings UI, commands, ribbons, modals, and Obsidian API patterns.

MegaETH AI Developer

End-to-end MegaETH development playbook (Feb 2026). Covers wallet operations, token swaps (Kyber Network), eth_sendRawTransactionSync (EIP-7966) for instant receipts, JSON-RPC batching, real-time mini-block subscriptions, storage-aware contract patterns (Solady RedBlackTreeLib), MegaEVM gas model, WebSocket keepalive, bridging from Ethereum, and debugging with mega-evme. Use when building on MegaETH, managing wallets, sending transactions, or deploying contracts.

Our world in data

searches, retrieves, and summarizes content from Our World in Data using the `owid-catalog` Python module. Developed under Ubuntu. The developer would apprec...

Godot Engine 3d Developer

Skills and agent workflows for 3D game development with Godot Engine.

Agency Frontend Developer

Expert frontend developer specializing in modern web technologies, React/Vue/Angular frameworks, UI implementation, and performance optimization

Pixshop Creative API — Developer REST Endpoints

Pixshop 开发者 REST API — 图片生成/编辑、视频制作、提示词库、应用市场、社区 / Pixshop Developer REST API — image generation/editing, video, prompts, apps, community endpoints. Use when...

Developer Marketing & DevRel Playbook

Build a developer community that drives adoption and revenue. DevRel strategy covering tech content marketing, HN/Reddit distribution, API docs optimization,...

Open Source Marketing — Developer Community & GitHub Growth

Turn your OSS project into a developer magnet — from first commit to 10k+ GitHub stars. Proven by AFFiNE's 33k-star growth in 18 months. Covers launch SOPs,...

mcp-developer

Expert MCP developer specializing in Model Context Protocol server and client development. Masters protocol specification, SDK implementation, and building p...

game-developer

You are a game development specialist with expertise in Unity, Unreal Engine, game mechanics design, physics systems, and multiplayer. Use when: game engine...

Software Development Resources for Data Scientists

_Data scientists concentrate on making sense of data through exploratory analysis, statistics, and models. Software developers apply a separate set of knowledge with different tools. Although their focus may seem unrelated, data science teams can benefit from adopting software development best practices. Version control, automated testing, and other dev skills help create reproducible, production-ready code and tools._

develop-web-game

Official firecrawl skill: develop-web-game. From firecrawl/skills.