Languages & Frameworks for Claude Code

Master modern GraphQL with federation, performance optimization, and enterprise security. Build scalable schemas, implement advanced caching, and design real-time systems.

Use this agent when designing or evolving GraphQL schemas across microservices, implementing federation architectures, or optimizing query performance in distributed graphs. Specifically:\n\n<example>\nContext: A team is building a multi-service architecture and needs to design a federated GraphQL schema.\nuser: \"We have three services (users, orders, products) that need to be exposed through a unified GraphQL API. Can you design the federation structure?\"\nassistant: \"I'll analyze your servi

GraphQL API security and authorization specialist. Use PROACTIVELY for GraphQL security audits, authorization implementation, query validation, and protection against GraphQL-specific attacks. <example> <user_request>Audit our GraphQL API before launch — we're worried about DoS attacks and data leaks through introspection.</user_request> <commentary>The agent will assess query depth/complexity limits, alias/batching overload protection, introspection exposure, CSRF on the GraphQL endpoint, and r

Expert guidance for GRPO/RL fine-tuning with TRL for reasoning and task-specific model training

High-performance toolkit for genomic interval analysis in Rust with Python bindings. Use when working with genomic regions, BED files, coverage tracks, overlap detection, tokenization for ML models, or fragment analysis in computational genomics and machine learning applications.

Google Model Armor: Create a new Model Armor template.

Expert Haskell engineer specializing in advanced type systems, pure

Build ultra-fast web APIs and full-stack apps with Hono — runs on Cloudflare Workers, Deno, Bun, Node.js, and any WinterCG-compatible runtime.

Expert patterns for HubSpot CRM integration including OAuth authentication, CRM objects, associations, batch operations, webhooks, and custom objects. Covers Node.js and Python SDKs. Use when: hubspot, hubspot api, hubspot crm, hubspot integration, contacts api.

Internationalization and localization patterns. Detecting hardcoded strings, managing translations, locale files, RTL support.

Implement GraphQL API with comprehensive schema, resolvers, and real-time subscriptions

Implements and trains LLMs using Lightning AI's LitGPT with 20+ pretrained architectures (Llama, Gemma, Phi, Qwen, Mistral). Use when need clean model implementations, educational understanding of architectures, or production fine-tuning with LoRA/QLoRA. Single-file implementations, no abstraction layers.

Initialize new project with essential structure, configuration, and development environment setup

Native iOS development specialist with Swift and SwiftUI. Use PROACTIVELY for iOS applications, UIKit/SwiftUI components, Core Data integration, app lifecycle management, and App Store optimization.

Use this agent when designing enterprise Java architectures, migrating Spring Boot applications, or establishing microservices patterns for scalable cloud-native systems. Specifically:\\n\\n<example>\\nContext: A team needs to refactor a monolithic Spring application into microservices with proper service boundaries and inter-service communication.\\nuser: \"We need to design a microservices architecture for our legacy Spring Boot monolith with 15 services. Current bottlenecks are the shared dat

Expert assistance for building Model Context Protocol servers in Java using reactive streams, the official MCP Java SDK, and Spring Boot integration.

Master Java 21+ with modern features like virtual threads, pattern matching, and Spring Boot 3.x. Expert in the latest Java ecosystem including GraalVM, Project Loom, and cloud-native patterns.

Comprehensive JavaScript reference covering 33+ essential concepts every developer should know. From fundamentals like primitives and closures to advanced patterns like async/await and functional programming. Use when explaining JS concepts, debugging JavaScript issues, or teaching JavaScript fundamentals.

Master modern JavaScript with ES6+, async patterns, and Node.js APIs. Handles promises, event loops, and browser/Node compatibility.

Use this agent when you need to build, optimize, or refactor modern JavaScript code for browser, Node.js, or full-stack applications requiring ES2025 features, async patterns, or performance-critical implementations. Specifically:\\n\\n<example>\\nContext: User has a legacy callback-based Node.js service and wants to modernize it with async/await, implement proper error handling, and optimize memory usage.\\nuser: \"I have an old Node.js service with callback hell. Can you refactor it to use mod

Direct REST API access to KEGG (academic use only). Pathway analysis, gene-pathway mapping, metabolic pathways, drug interactions, ID conversion. For Python workflows with multiple databases, prefer bioservices. Use this for direct HTTP/REST work or KEGG-specific control.

Compress large language models using knowledge distillation from teacher to student models. Use when deploying smaller models with retained performance, transferring GPT-4 capabilities to open-source models, or reducing inference costs. Covers temperature scaling, soft targets, reverse KLD, logit distillation, and MiniLLM training strategies.

Expert patterns for Kotlin Coroutines and Flow, covering structured concurrency, error handling, and testing.

Expert assistant for building Model Context Protocol (MCP) servers in Kotlin using the official SDK.

Use when building Kotlin applications requiring advanced coroutine patterns, multiplatform code sharing, or Android/server-side development with functional programming principles. Specifically:\\n\\n<example>\\nContext: Building a cross-platform mobile application sharing business logic between Android and iOS using Kotlin Multiplatform Mobile (KMM)\\nuser: \"We're creating a social media app targeting both Android and iOS. How do we structure a KMM project to maximize shared code while maintain

Expert in LangGraph - the production-grade framework for building stateful, multi-actor AI applications. Covers graph construction, state management, cycles and branches, persistence with checkpointers, human-in-the-loop patterns, and the ReAct agent pattern. Used in production at LinkedIn, Uber, and 400+ companies. This is LangChain's recommended approach for building agents. Use when: langgraph, langchain agent, stateful agent, agent graph, react agent.

Senior Laravel Engineer role for production-grade, maintainable, and idiomatic Laravel solutions. Focuses on clean architecture, security, performance, and modern standards (Laravel 10/11+).

Expert Laravel development assistant specializing in modern Laravel 12+ applications with Eloquent, Artisan, testing, and best practices

Use when building Laravel 10+ applications, architecting Eloquent models with complex relationships, implementing queue systems for async processing, or optimizing API performance. Specifically:\\n\\n<example>\\nContext: Building a new Laravel 10 SaaS application from scratch with multi-tenancy, real-time features, and complex database design\\nuser: \"I need to build a Laravel 10 SaaS platform for task management. Requirements: multi-tenant architecture, real-time notifications via WebSockets,

Latch platform for bioinformatics workflows. Build pipelines with Latch SDK, @workflow/@task decorators, deploy serverless workflows, LatchFile/LatchDir, Nextflow/Snakemake integration.

Expert at implementing internationalization (i18n) in web applications using a systematic, checklist-driven approach.

Production-ready patterns for building LLM applications. Covers RAG pipelines, agent architectures, prompt IDEs, and LLMOps monitoring. Use when designing AI applications, implementing RAG, building agents, or setting up LLM observability.

Extend context windows of transformer models using RoPE, YaRN, ALiBi, and position interpolation techniques. Use when processing long documents (32k-128k+ tokens), extending pre-trained models beyond original context limits, or implementing efficient positional encodings. Covers rotary embeddings, attention biases, interpolation methods, and extrapolation strategies for LLMs.

State-space model with O(n) complexity vs Transformers' O(n²). 5× faster inference, million-token sequences, no KV cache. Selective SSM with hardware-aware design. Mamba-1 (d_state=16) and Mamba-2 (d_state=128, multi-head). Models 130M-2.8B on HuggingFace.

Comprehensive guide for Manim Community - Python framework for creating mathematical animations and educational videos with programmatic control

MCP protocol specification and standards specialist. Use PROACTIVELY for protocol design, specification compliance, transport implementation, and maintaining standards across the ecosystem.

MCP server architecture and implementation specialist. Use PROACTIVELY for designing servers, implementing transport layers, tool definitions, completion support, and protocol compliance.

Create, update, refactor, explain or work with code using the .NET version of Microsoft Agent Framework.