Backend

Detect and decode various encoding schemes including Base64, hex, URL encoding, and binary. Use this skill when identifying unknown encodings in CTF challenges or decoding layered/nested encodings.

Use DESeq2 for differential gene expression analysis from RNA-seq count data.

Apply comprehensive API testing patterns including contract testing, REST/GraphQL testing, and integration testing. Use when testing APIs, microservices, or designing API test strategies.

Automatically detect and fix documentation inconsistencies, outdated examples, and missing @file headers in the u-he-preset-randomizer project. Triggers when documentation appears outdated or when making significant code changes that affect public APIs.

Comprehensive Stripe API expert with access to 3,253 official documentation files covering all payment processing, billing, subscriptions, webhooks, Connect, Terminal, Radar, Identity, Tax, Climate, and integrations. Invoke when user mentions Stripe, payments, subscriptions, billing, payment processing, checkout, invoices, or any payment-related features.

Express.js security audit patterns. Load when reviewing Express apps. Covers Helmet.js, CORS, body-parser limits, auth middleware, and common Express security mistakes.

GraphQL schema architect designing efficient, scalable API graphs. Masters federation, subscriptions, and query optimization while ensuring type safety and developer experience.

Create, edit, and analyze PowerPoint presentations with slides, layouts, charts, images, animations, and speaker notes. Supports python-pptx and pptxgenjs for automated presentation generation in Python and Node.js.

FastAPI security audit patterns. Use when reviewing FastAPI apps (fastapi imports, main.py/app.py, requirements/pyproject with fastapi, uvicorn). Covers auth dependencies, CORS configuration, TrustedHost/HTTPS middleware, and common FastAPI/Starlette security footguns.

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.

API architecture expert designing scalable, developer-friendly interfaces. Creates REST and GraphQL APIs with comprehensive documentation, focusing on consistency, performance, and developer experience.

Production-grade AI agent patterns with MCP integration, agentic RAG, handoff orchestration, multi-layer guardrails, and observability (modern best practices)

Expert Swift developer specializing in Swift 5.9+ with async/await, SwiftUI, and protocol-oriented programming. Masters Apple platforms development, server-side Swift, and modern concurrency with emphasis on safety and expressiveness.

Master orchestration for routing technical problems through 30+ engineering skills - AI/ML, software development, data, APIs, and Claude Code framework

AGGRESSIVELY use TOON v2.0 format for biggish regular data (≥5 items, ≥60% uniform). Auto-applies to tables, logs, events, transactions, analytics, API responses, database results. Supports 3 array types (inline, tabular, expanded), 3 delimiters (comma, tab, pipe), key folding for nested objects. Triggers on structured data, arrays, repeated patterns. Use TOON by default when tokens matter - RAG pipelines, tool calls, agents, benchmarks. Keywords "data", "array", "list", "table", "log", "transaction", "metric", "analytics", "API", "database", "query", "TOON".

Find, install, and configure Model Context Protocol (MCP) servers for OpenCode. Use when user asks about finding MCP servers, installing them, configuring OAuth, or troubleshooting MCP issues.

Expert platform engineer specializing in internal developer platforms, self-service infrastructure, and developer experience. Masters platform APIs, GitOps workflows, and golden path templates with focus on empowering developers and accelerating delivery.

Expert documentation engineer specializing in technical documentation systems, API documentation, and developer-friendly content. Masters documentation-as-code, automated generation, and creating maintainable documentation that developers actually use.

Expert .NET Core specialist mastering .NET 8 with modern C# features. Specializes in cross-platform development, minimal APIs, cloud-native applications, and microservices with focus on building high-performance, scalable solutions.

Extract text and tables from PDFs, create formatted PDFs, merge/split documents, handle forms and annotations. Supports pdf-lib, pdfkit, PyPDF2, pdfplumber, and ReportLab for comprehensive PDF workflows in Node.js and Python.