Languages & Frameworks for Claude Code

> Generate production-ready Express.js REST API with TypeScript and auth

> Generate production-ready Express.js REST API with TypeScript and auth

Guides users step-by-step through three-phase FairDB provisioning — VPS hardening, PostgreSQL 16 installation, and pgBackRest backup configuration — on a fresh Ubuntu 24.04 VPS. Use when setting up a new FairDB server from scratch. Trigger with "set up FairDB", "provision a new database server".

> Generate production-ready FastAPI REST API with async and authentication

> Generate production-ready FastAPI REST API with async and authentication

Performs production-safe Firestore CRUD, batch writes, complex queries, transactions, and cost optimizations using the Firebase Admin SDK with full error handling. Use when reading, writing, or restructuring Firestore data. Trigger with "run Firestore operation", "batch update collection".

Initialize Firebase Admin SDK, configure Firestore, and setup A2A/MCP...

Builds the infrastructure everything runs on — writes IaC, makes cloud provider and sizing decisions, and ships right-sized architecture for today's scale. Use when provisioning cloud resources, writing Terraform configs, or choosing compute/database architecture. Trigger with \"provision infrastructure\", \"write Terraform for this\".

Provides production-ready code examples from official Google Cloud repos — ADK samples, Agent Starter Pack, Genkit flows, Vertex AI fine-tuning, and Gemini function calling patterns. Use when building AI agents or workflows on GCP and you need battle-tested starter code. Trigger with \"show me an ADK agent example\", \"give me a Genkit starter template\".

Godot Engine 4.x specialist — GDScript style, scene/node hierarchy, signal patterns, state machines, object pooling, and performance tuning. Use when building or debugging a Godot project. Trigger with \"help with my Godot game\", \"design this Godot scene\".

Coordinates corpus linguistics agents (linguistics expert, KWIC/concordance UI, database performance) for building and optimizing language corpus tools. Use when working on concordancers, frequency analyzers, or KWIC displays. Trigger with \"build a corpus feature\", \"optimize corpus queries\".

Coordinates specialized sub-agents to audit, build, or refactor Python projects (Flask apps, CLI tools, libraries, scripts). Use when starting or reviewing a Python codebase and needing end-to-end coverage. Trigger with \"audit this Python project\", \"build a Python tool\".

Designs and implements Python CLI tools using Click, Typer, or argparse — covering argument parsing, output formatting, exit codes, shell completion, and PyPI packaging. Use when building or improving a command-line application in Python. Trigger with \"build a Python CLI tool\", \"improve this CLI UX\".

> Generate test doubles (mocks, stubs, spies, fakes) for unit testing

> Generate production-ready gRPC services with Protocol Buffers

Generate production-ready RESTful APIs with best practices

Generate client SDKs from OpenAPI specs

Generate Helm charts for Kubernetes applications

Generate Infrastructure as Code

Implement event-driven API architecture

Initialize a new Firebase Genkit project with best practices, proper...

Create Kubernetes deployments and services

Generate Helm chart for Kubernetes application

Modernizes deprecated API usage, old syntax patterns (var, prototype, XMLHttpRequest), unnecessary polyfills, and compatibility shims — always checking platform targets first to avoid over-modernizing. Use when upgrading a codebase to current Node/browser targets or removing old Babel polyfills. Trigger with \"remove legacy code\", \"modernize deprecated APIs\".

Manage API versions with proper migration strategies

> Migrate API to new version with compatibility layers and automated scripts

Create and manage database migrations

Use when designing or reviewing a mobile app — React Native, Flutter, native iOS (Swift/SwiftUI), native Android (Kotlin/Compose), or responsive mobile web — the mobile specialist that picks the platform/framework, designs the app architecture (navigation, offline-first, lifecycle-aware state), enforces platform accessibility (VoiceOver/TalkBack, touch targets, Dynamic Type), defines the device-size test matrix and tooling (Maestro/Detox/XCUITest/Espresso), and holds on-device performance budget

Implements Next.js 16 frontend features (App Router, Server/Client Components, TypeScript, TailwindCSS v4, i18n) strictly from sprint API contract and frontend specs, returning a structured FRONTEND IMPLEMENTATION REPORT. Use when building or updating Next.js pages and components in a sprint. Trigger with "implement frontend sprint", "build Next.js feature".

Monitors a running Next.js application for compilation errors, runtime errors, hydration mismatches, and API failures using Next.js DevTools MCP — runs in parallel with ui-test-agent. Use when testing a Next.js project and need server-side error visibility. Trigger with "monitor Next.js errors", "run Next.js diagnostics".

Design efficient NoSQL data models for MongoDB, DynamoDB, and Cassandra — applying embed-vs-reference, access-pattern-first, sharding key, and index strategies. Use when architecting a document or key-value schema or migrating from a relational model. Trigger with \"design NoSQL schema\", \"model for MongoDB\".

Generate ORM entity classes, migration files, and relationship definitions for TypeORM, Prisma, SQLAlchemy, Django ORM, Hibernate, and more from database schemas or requirements. Use when bootstrapping data models, migrating between ORMs, or generating code for a new API. Trigger with \"generate ORM models\", \"create entity classes\".

Architects multi-language SDKs with idiomatic patterns per language, typed error handling, auto-pagination, and consistent cross-language interfaces — generated and hand-polished. Use when designing a new SDK surface, reviewing an existing SDK for ergonomics, or auditing coverage gaps across languages. Trigger with \"design the SDK architecture\", \"review this SDK\".

Implements design system specs into production-quality UI components, pages, and internal tools using design tokens, TDD, and full a11y — never reinterprets Form's visual decisions. Use when building React/Vue/Svelte components, wiring state management, or hardening production UI against empty/error/loading states. Trigger with \"implement this component\", \"build the UI\".

Generate Prisma schema from natural language descriptions

Generate Prisma schema from natural language descriptions

> Generate complete fullstack project structure with all boilerplate