9,398 tagged Languages, measured the same way as everything else here.
Browse within: agents 134LLM 130skills 121ai-coding 119agentic-ai 100agent 93claude-code-skills 89antigravity 86dotnet 76azure 74cli 73javascript 71openai 69sdk 67
Skill Claude CodeCodex
Build async web applications and APIs with Starlette 1.0, the lightweight ASGI framework for Python. Use this skill whenever a user wants to create an async Python web app, REST API, WebSocket server, or ASGI application using Starlette. Triggers include mentions of 'Starlette', 'ASGI', async Python web frameworks, or…
Skill Claude CodeCodex
Apply, review, and explain discriminated unions in TypeScript. Use automatically for tasks involving mutually exclusive variants, invalid state prevention, exhaustiveness checking, variant-specific object properties, application state, function arguments, or React props.
Skill Claude Code
Apply the C# coding and design guidelines by Dennis Doomen when writing, reviewing, or refactoring C# code. Use this skill whenever you generate or evaluate C# to ensure it follows the established rules for class design, member design, maintainability, naming, performance, testability, and more.
Skill Claude Code ✓ vendor
Provides guidance for writing, optimizing, and benchmarking C++ CPU kernels with SIMD intrinsics (AVX2/AVX512) for the Hugging Face kernels ecosystem. Includes a two-phase workflow: Phase 1 correctness (generic → AVX2) and Phase 2 performance exploration (AVX512 with branching trial loop), runtime CPU dispatch, OpenMP…
anthropics/code-migration-kit-with-claude-code
Skill Claude CodeCodex ✓ vendor
Run a large-scale language migration with the six-step process: create the map and the rules, stress-test the rules, translate everything, compile, run it, match behavior. Use when the user wants to migrate, port, or rewrite a codebase from one language to another ("migrate this to Rust", "port our Python CLI to…
Skill Claude CodeCodex
Common design patterns with Java examples (Factory, Builder, Strategy, Observer, Decorator, etc.). Use when user asks "implement pattern", "use factory", "strategy pattern", or when designing extensible components.
Skill Claude CodeCodex
ONLY for writing backend or fullstack code BY HAND. NOT needed on the normal path — createartifact(fullstack-stateless-app or fullstack-stateful-app) followed by generateartifact writes the backend, verifies it by importing it and launches it. Recall this when editing an existing fullstack artifact, or when…
marckohlbrugge/37signals-skills
Skill Claude Code
Review Ruby/Rails code like DHH would - direct, opinionated, allergic to over-engineering. Use when the user runs /dhh or asks for a DHH-style review of a diff, file, or recent changes.
Skill Codex
Create, revise, and troubleshoot publication-ready scientific plots in Python with cnsplots, including distribution, regression, heatmap, genomics, survival, set, flow, and multi-panel figures. Use when a user asks for cnsplots code, Cell/Nature/Science-style visualization, precise physical figure dimensions…
Skill Codex
A set of conventions for writing, reviewing, refactoring and explaining Java and Spring Boot code. It covers common application layers such as controllers, services and data-access code, while allowing repository-specific rules to take priority.
Skill Claude CodeCodex
Write and execute Binary Ninja Python scripts — full API reference included.
Skill Claude CodeCodex
A coding skill for Go, a programming language, with guidance on code style, concurrent work, error handling, and tests.
Skill Claude CodeCodex
Use this skill when working with bnlearn, a Python library for Bayesian modeling, probabilistic graphical models, causal discovery, parameter learning, structure learning, inference, do-why calculus (dowhy), sampling, and directed acyclic graphs (DAG).
Skill Claude Code
Rootstrap Rails conventions. Use when writing, reviewing, or editing any Rails code — controllers, models, migrations, routes, views, mailers, initializers, locale files, or Rails config. Covers routing, ActiveRecord, migrations, i18n, time zones, mailers, assets, Bundler groups, and logging.
Skill Claude CodeCodex ✓ vendor
Use when the user is writing datafusion-python (Apache DataFusion Python bindings) DataFrame or SQL code. Covers imports, data loading, DataFrame operations, expression building, SQL-to-DataFrame mappings, idiomatic patterns, and common pitfalls.
Skill Claude CodeCodex
Comprehensive Rust coding guidelines with 265 rules across 26 categories. Use when writing, reviewing, or refactoring Rust code. Covers ownership, error handling, async patterns, concurrency, unsafe code, API design, memory optimization, performance, numeric safety, conversions, serde, pattern matching, macros…
Skill Claude CodeCodex
Integrate and build on the @alpacahq/alpaca-trade-api TypeScript SDK for the Alpaca Trading and Market Data APIs (the unified Alpaca client, ergonomic order builders, normalized market-data shapes, pagination, typed errors, resilience, and real-time streaming). Use when writing or reviewing code that imports…
MazzaWill/neo4j-python-pandas-py2neo-v3
Skill Codex
Use when designing, importing, querying, or modernizing Neo4j knowledge graphs from CSV, Excel, pandas, Cypher, py2neo, the official neo4j Python driver, vector indexes, or GraphRAG workflows.
Skill Claude CodeCodex
Use when porting an app from the Vercel AI SDK (ai, @ai-sdk/) to @deuz-sdk/core. Triggers include "migrate from the AI SDK", "replace ai with @deuz-sdk/core", "we use streamText/generateText/useChat and want to switch", removing @ai-sdk/openai or @ai-sdk/anthropic, porting a toUIMessageStreamResponse route, converting…
Skill Claude Code
Scaffold a new Gacela module with its scoped rule.
Skill Claude CodeCodex
How to use the PyMAPDL command-line interface to start, stop, list, and execute commands on MAPDL instances from a terminal. Use this skill whenever the user wants to control MAPDL from the command line, run APDL commands via the shell, manage running MAPDL processes, script MAPDL workflows without writing Python, or…
Skill Claude CodeCodex
Use Go AST-aware analysis to enumerate symbols, extract signatures, and propose mechanically safe refactors (read-only by default).
Skill Claude CodeCodex
Use this skill before answering, planning, or editing any MSTest 3.x-to-4.x upgrade or post-upgrade failure. Triggers include "MSTest v4 breaking changes"; CS0507/CS0103/CS1061/CS1615; ExecuteAsync, CallerInfo, DisplayName, or custom TestMethodAttribute; ClassCleanupBehavior; ContainsKey; ThrowsExactly or…
NVIDIA-BioNeMo/bionemo-agent-toolkit
Skill Claude CodeCodex
Use when writing or debugging nvMolKit Python code for GPU-accelerated RDKit fingerprints, similarity, conformers, clustering, and molecular searches.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: