Languages

15,070 mods in this category, of every kind an agent can take. Each one carries what it costs per session, what the scan found, and whether it is the original.

shiny-for-python

73

posit-dev/py-shiny

Skill Claude CodeCodex

Building, styling, testing, debugging, or observing a Shiny for Python (py-shiny) reactive web app - from shiny import ..., shiny run app.py. Index skill: read this, then open the linked reference for the task. Covers dashboard design and visual QA; card toolbars and accessible icons; interactive Plotly charts and…

not rated 1.8k +3 changed 22d ago A SkillSpector: pass 218 tokens original MIT

swift-concurrency

74

AvdLee/Swift-Concurrency-Agent-Skill

Plugin Claude Code

Bundles 1 skill · 56 tokens together

Expert guidance on Swift Concurrency best practices, patterns, and implementation. Covers async/await, actors, tasks, Sendable conformance, data race prevention, and Swift 6 migration strategies.

not rated 1.7k +2 changed today A tokens not measured original MIT

move-copy-semantics

75

xLLM-AI/xllm

Cursor rule Cursor

Avoid std::move(const&) silent copies; use sink-by-value + std::move.

not rated 1.6k +3 today A 410 tokens original Apache-2.0

files-sdk

76

haydenbleasel/files-sdk

Skill Claude CodeCodex

Use files-sdk to add file storage to a TypeScript/JavaScript app with a unified API across 49 adapters (S3, R2, GCS, Azure, Vercel Blob, the local filesystem, and more). Triggers when the user wants to upload/download/list/search/move/delete/copy files, generate presigned URLs, do multipart or resumable uploads, range…

not rated 1.6k +1 changed 22d ago A SkillSpector: warn 306 tokens original MIT

internet-development/www-sacred

Skill Claude CodeCodex

Keep www-sacred's TypeScript fast to type-check and fast to run. Use when touching the ASCII/canvas animation components (the only real per-frame code here), tightening type-check wall-clock, or auditing a change for runtime or compiler regressions. Scoped to this repo — a React 19 / Next.js 16 component library plus…

not rated 1.6k +1 changed 10d ago A SkillSpector: warn 84 tokens original MIT

nuget

80

NuGet/Home

MCP server Claude CodeCodexCursor +2

MCP server "nuget" as configured in NuGet/Home. Launched with NuGet.Mcp.Server.

not rated 1.6k +1 17d ago A tokens not measured

paper2code

81

PrathamLearnsToCode/paper2code

Skill Claude CodeCodex

Converts an arxiv paper into a minimal, citation-anchored Python implementation. Trigger when user runs /paper2code with an arxiv URL or paper ID, says "implement this paper", or pastes an arxiv link asking for implementation. Flags all ambiguities honestly. Never invents implementation details not stated in the paper.

not rated 1.5k +2 7mo ago A Socket: warnSnyk: warnSkillSpector: pass 72 tokens original MIT

fantasy-net

82

qq362946/Fantasy

Skill Claude CodeCodex

This guide applies to development and code review for Fantasy / Fantasy.Net / Fantasy.Unity written in C#. Use it when a task involves Fantasy server code or Unity client code using Fantasy, ECS entities/components/systems, scenes and subscenes, FTask, network handlers/messages/protocols, Address or Roaming routing…

not rated 1.5k +7 19d ago A SkillSpector: pass 157 tokens

backend

83

nixopus/nixopus

Cursor rule Cursor

Go API Development Rules for Nixopus Backend.

not rated 1.5k +1 6d ago A 0 tokens

atsign-foundation/at_client_sdk

Skill Claude Code

Use this skill when a developer builds or upgrades a Dart or Flutter app on the Atsign Protocol with atclientcli (CLI, daemon or server) or atclientflutter, including upgrading to atclient 4.0. Covers onboarding (CRAM, atKeys files, keychain) and APKAM enrollment; opening, stopping or switching an AtClient and its…

not rated 1.4k +1 changed 2d ago A SkillSpector: warn 220 tokens original BSD-3-Clause

atmos-rules

86

cloudposse/atmos

Cursor rule Cursor

This is a Golang CLI project using Cobra for command structure and Viper for configuration management. The project maintains high code quality standards through golangci-lint and aims for maximum test coverage. The repository also includes the website source code for https://atmos.tools.

not rated 1.4k +7 today A 1,420 tokens original Apache-2.0

c-code-style

87

MaJerle/c-code-style

Plugin Claude Code

Bundles 1 skill · 79 tokens together

C coding style rules and clang-format enforcement for AI coding agents, based on Tilen Majerle's C style guide.

not rated 1.4k 14d ago A tokens not measured original MIT

swift-mlx-lm

88

kellyvv/PhoneClaw

Skill Claude CodeCodex

MLX Swift LM - Run LLMs and VLMs on Apple Silicon using MLX. Covers local inference, streaming, wired memory coordination, tool calling, LoRA fine-tuning, embeddings, and model porting.

not rated 1.3k +5 3mo ago A SkillSpector: pass 52 tokens original Apache-2.0

matlab/matlab-agentic-toolkit

Skill Claude CodeCodex

Use when writing MATLAB functions with arguments blocks — repeating arguments (arguments (Repeating)), .?ClassName property import in constructors, name-value forwarding with namedargs2cell, or migrating from inputParser or validateattributes. Also when reviewing signatures for implicit-conversion pitfalls (size…

not rated 1.3k +34 changed 29d ago A 199 tokens

starknet-js

92

starknet-io/starknet.js

Skill Claude CodeCodex

Use when writing or debugging JavaScript/TypeScript that interacts with Starknet through the starknet.js SDK — building Call objects or calldata, encoding/decoding Cairo types (felt252, u256, structs, arrays, spans, ByteArray, Option/Result/custom enums), or working with contracts, accounts, providers, transactions…

not rated 1.3k changed 1mo ago A SkillSpector: warn 79 tokens original MIT

dotnet-skills

93

Aaronontheweb/dotnet-skills

Plugin Claude Code

Bundles 39 skills, 6 agents · 2,218 tokens together

Comprehensive .NET development skills and agents for Claude Code - covering C#, F#, Akka.NET, Aspire, testing frameworks, and specialized tools.

not rated 1.3k +7 changed 26d ago A tokens not measured original MIT

binance-net

94

JKorf/Binance.Net

Cursor rule Cursor

Conventions for using Binance.Net library when working with Binance cryptocurrency exchange in C#/.NET. Apply when generating code that interacts with Binance API.

not rated 1.2k +2 changed 1mo ago A 0 tokens original MIT

chrisbanes-skills

95

chrisbanes/skills

Plugin Claude Code

Bundles 21 skills · 995 tokens together

Skills for Kotlin, Android, JVM, and Jetpack Compose development by Chris Banes.

not rated 1.1k +4 changed 3d ago A tokens not measured original Apache-2.0

Kotlin/kotlin-agent-skills

Skill Claude CodeCodex

Load when migrating or converting an entire Gradle Kotlin project (build.gradle(.kts), wrapper, libs.versions.toml, buildSrc) to the Kotlin Toolchain, including rewriting CI and replacing Gradle plugins that have no native Toolchain equivalent. Skip for porting one Gradle plugin or general Toolchain work once Gradle…

not rated 1.1k +6 7d ago A Socket: passSnyk: pass 83 tokens original Apache-2.0

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: