Backend

Design, implement, and debug a custom ChatKit backend in Python that powers the ChatKit UI without Agent Builder, using the OpenAI Agents SDK (and optionally Gemini via an OpenAI-compatible endpoint). Use this Skill whenever the user wants to run ChatKit on their own backend, connect it to agents, or integrate ChatKit with a Python web framework (FastAPI, Django, etc.).

Progressive four-tier URL content scraping with automatic fallback strategy.USE WHEN user says "scrape this URL", "fetch this page", "get content from","can't access this site", "use Bright Data", "pull content from URL",or needs to retrieve web content that may have bot detection or access restrictions.

Restores applications and data from Velero backups with proper configuration, validation, and verification.

Kailash DataFlow - zero-config database framework with automatic model-to-node generation. Use when asking about 'database operations', 'DataFlow', 'database models', 'CRUD operations', 'bulk operations', 'database queries', 'database migrations', 'multi-tenancy', 'multi-instance', 'database transactions', 'PostgreSQL', 'MySQL', 'SQLite', 'MongoDB', 'pgvector', 'vector search', 'document database', 'RAG', 'semantic search', 'existing database', 'database performance', 'database deployment', 'database testing', or 'TDD with databases'. DataFlow is NOT an ORM - it generates 11 workflow nodes per SQL model, 8 nodes for MongoDB, and 3 nodes for vector operations.

Expert on Shelby Protocol architecture, erasure coding, placement groups, read/write procedures, Clay Codes, chunking, storage providers, RPC servers, and decentralized storage system design on Aptos blockchain. Triggers on keywords Shelby Protocol, erasure coding, Clay Codes, placement groups, Shelby architecture, storage provider, blob storage, chunking, Shelby whitepaper.

ROS 2 node templates and message types for robotics development. Use when creating ROS 2 nodes, understanding message types, or writing publisher/subscriber patterns.

Run and interpret the File API vs Inline benchmark for Gemini performance testing. Use when discussing performance optimization, caching strategies, or comparing document upload approaches.

Write Arcade expressions for dynamic calculations in popups, renderers, labels, and field calculations. Use for data-driven styling, custom labels, and computed fields.

Implement comprehensive validation using Zod schemas for type-safe validation on both client and server, with server-side validation as the security boundary (never trust client input). Use this skill when validating user inputs, creating API endpoints that accept data, implementing forms, defining data schemas, validating file uploads, creating validation middleware, implementing Firestore security rules or Supabase RLS, or writing validation rules for any user-provided data. Apply when working on API route handlers, form components with React Hook Form, validation middleware, Zod schema definitions (schemas/*.ts, validation/*.ts), Firestore security rules (firestore.rules), Supabase RLS policies, or any code that accepts external input. This skill ensures server-side validation always (client-side is for UX only), Zod for schema validation with TypeScript type inference (z.infer<typeof schema>), validation middleware factory for Express/Bun APIs, React Hook Form + zodResolver for forms, user-friendly error

Methodological skill for Test-Driven Development in NestJS backend. This skill should be used when strict quality requirements demand tests-first approach, refactoring critical services, or building MVPs with mandatory coverage. Complements nestjs-architect skill with TDD methodology.

Backend and API standards for Soracom services. Use when authoring OpenAPI specs, implementing Java/Kotlin services, or preparing releases.

Generate boilerplate code for new CasareRPA automation nodes. See templates/ for category-specific templates and references/ for the complete checklist. Use when: creating new nodes, adding node categories, implementing BaseNode patterns, @properties decorator, node registration, get_parameter usage.

Fetch and summarize web content for any research task - documentation, design inspiration, competitor analysis, tutorials, API docs. Use when you need to understand web pages, extract key information, research patterns, or gather context for development work.

Build Node.js backend services with Express/Fastify, PostgreSQL, and services pattern. Use when creating backend APIs, setting up servers, or connecting to databases.

FastAPI/Next.js/Express integration patterns

Build production-ready Node.js backend services with Express/Fastify, implementing middleware patterns, error handling, authentication, database integration, and API design best practices. Use when creating Node.js servers, REST APIs, GraphQL backends, or microservices architectures.

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.

Expert in Shelby Protocol TypeScript SDK for decentralized storage on Aptos. Helps with blob uploads/downloads, session management, micropayment channels, multipart uploads, and SDK integration for Node.js and browser environments. Triggers on keywords ShelbyNodeClient, ShelbyClient, @shelby-protocol/sdk, Shelby SDK, decentralized blob storage, Shelby upload, Shelby download, Shelby session.

Look up official documentation for any library, framework, or API using web search. Find usage examples, API references, and best practices. Activated when users ask "how do I use [library]?", need API documentation, or reference external packages.

Generate boilerplate code for new CasareRPA automation nodes following the established patterns and clean architecture principles.