Backend

JavaScript ES2024+ development specialist covering Node.js 22 LTS, Bun 1.x (serve, SQLite, S3, shell, test), Deno 2.x, testing (Vitest, Jest), linting (ESLint 9, Biome), and backend frameworks (Express, Fastify, Hono). Use when developing JavaScript APIs, web applications, or Node.js projects.

PHP 8.3+ development specialist covering Laravel 11, Symfony 7, Eloquent ORM, and modern PHP patterns. Use when developing PHP APIs, web applications, or Laravel/Symfony projects.

Ruby 3.3+ development specialist covering Rails 7.2, ActiveRecord, Hotwire/Turbo, and modern Ruby patterns. Use when developing Ruby APIs, web applications, or Rails projects.

Enterprise Backend-as-a-Service Foundation with AI-powered BaaS architecture patterns, strategic provider selection, and intelligent multi-service orchestration for scalable production applications

Use when configuring event mappings for specific use cases. Provides recipes for GA4, Meta, custom APIs, and common transformation patterns.

Use when creating a new walkerOS source (web or server). Step-by-step workflow for capturing events from new platforms. (project)

Use when creating a new walkerOS destination (web or server). Step-by-step workflow from research to documentation. (project)

Use when configuring event mappings for specific use cases. Provides recipes for GA4, Meta, custom APIs, and common transformation patterns. (project)

Use when you need to implement CloudBase Auth v2 over raw HTTP endpoints (login/signup, tokens, user operations) from backends or scripts that are not using the Web or Node SDKs.

A single skill that helps design and implement CloudBase Auth v2 using Web SDK, Node SDK, and HTTP APIs, including login methods, tokens, and best practices.

PDF generation toolkit. Create invoices, reports, certificates, forms, charts, tables, barcodes, QR codes, Canvas/Platypus APIs, for professional document automation.

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

This skill should be used when user encounters "Tavily MCP error", "Tavily API key invalid", "web search not working", "Tavily failed", or needs help configuring Tavily integration.

Create and manage database migrations with reversible changes, proper naming conventions, and zero-downtime deployment strategies. Use this skill when creating database migration files, modifying schema, adding or removing tables/columns, managing indexes, or handling data migrations. Apply when working with migration files (e.g., db/migrate/, migrations/, alembic/, sequelize migrations), schema changes, database versioning, rollback implementations, or when you need to ensure backwards compatibility during deployments. Use for any task involving database structure changes, index creation, constraint modifications, or data transformation scripts.

Define database models with clear naming, appropriate data types, constraints, relationships, and validation at multiple layers. Use this skill when creating or modifying database model files, ORM classes, schema definitions, or data model relationships. Apply when working with model files (e.g., models.py, models/, ActiveRecord classes, Prisma schema, Sequelize models), defining table structures, setting up foreign keys and relationships, configuring cascade behaviors, implementing model validations, adding timestamps, or working with database constraints (NOT NULL, UNIQUE, foreign keys). Use for any task involving data integrity enforcement, relationship definitions, or model-level data validation.

Validate injection vulnerabilities including SQL, NoSQL, OS Command, LDAP, XPath, SSTI, and XSS. Test by sending crafted payloads to user-controlled input fields and observing application behavior. Use when testing CWE-89 (SQL Injection), CWE-78 (OS Command Injection), CWE-79 (XSS), CWE-90 (LDAP Injection), CWE-917 (Expression Language Injection), CWE-94 (Code Injection), CWE-643 (XPath Injection), or related injection findings.

Research documentation, find examples, explain APIs and libraries - Use when you need to look up official documentation, find code examples, understand library APIs, or research best practices.

Reverse engineer web APIs by capturing browser traffic (HAR files) and generating production-ready Python API clients. Use when the user wants to create an API client for a website, automate web interactions, or understand undocumented APIs. Activate on tasks mentioning "reverse engineer", "API client", "HAR file", "capture traffic", or "automate website".

Generate RESTful routes, nested routes, and custom routing patterns for Wheels applications. Use when defining URL structure, creating RESTful resources, or implementing custom route patterns. Ensures proper HTTP verb mapping and route constraints.

Configure Wheels applications for production deployment with security hardening, performance optimization, and environment-specific settings. Use when preparing for production, configuring servers, or hardening security.