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.

browse-java-javadocs

1081

loong95/javadoc-mcp

Skill Codex

Inspect external Java and JVM library APIs through the javadoc-cli shell command using Maven coordinates. Use when Codex needs authoritative JavaDoc instead of guessing, especially for tasks like finding the right package or class, checking method overloads, reading parameter or return documentation, confirming…

not rated 4 5mo ago A 101 tokens original Apache-2.0

kennic/framelayoutkit-mcp-server

MCP server Claude CodeCodexCursor +2

Model Context Protocol server for FrameLayoutKit iOS framework - generates Swift UIKit code using FrameLayoutKit syntax. Runs locally from the framelayoutkit-mcp-server npm package.

not rated 4 1y ago A tokens not measured

jupyter-kernel-mcp

1083

codewithcheese/jupyter-kernel-mcp

MCP server Claude CodeCodexCursor +2

MCP server for stateful Jupyter kernel development with multi-language support (Python, TypeScript, JavaScript). Runs locally from the jupyter-kernel-mcp Python package.

not rated 4 1y ago A tokens not measured

swift-mcp

1084

onmyway133/swift-mcp

MCP server Claude CodeCodexCursor +2

MCP server for Swift and SwiftUI best practices. Runs locally from the swift-mcp npm package.

not rated 4 10mo ago A tokens not measured

java-jar-mcp

1085

biggerball/java-jar-mcp

MCP server Claude CodeCodexCursor +2

MCP server for Java Maven projects to provide jar class definitions to AI. Runs locally from the @biggerball/java-jar-mcp npm package.

not rated 4 7mo ago A tokens not measured original MIT

clickup-mcp-server

1086

Chisanan232/clickup-mcp-server

MCP server Claude CodeCodexCursor +2

🦾 A strong MCP server for ClickUp. Runs locally from the clickup-mcp-server Python package.

not rated 4 5d ago A tokens not measured original MIT

opal-mcp

1087

opalsecurity/opal-mcp

MCP server Claude CodeCodexCursor +2

Developer-friendly & type-safe Typescript SDK specifically catered to leverage opal-mcp API. Runs locally from the opal-mcp npm package.

not rated 4 today A tokens not measured original Apache-2.0

mcp

1088

yp3y5akh0v/citadel

MCP server Claude CodeCodexCursor +2

Model Context Protocol server for Citadel: encrypted memory as MCP tools. Runs locally from the citadeldb-mcp Python package. Needs 1 environment variable to run.

not rated 4 +1 1mo ago A tokens not measured original Apache-2.0

overview

1089

jkaninda/okapi-skills

Skill Claude CodeCodex

Skill "overview" from jkaninda/okapi-skills, covering okapi overview, project structure, core types, constructors and app configuration.

not rated 4 2mo ago A 0 tokens original MIT

rust-api-guidelines

1090

qiao/rust-api-guidelines-skill

Skill Claude CodeCodex

Enforces the official Rust API Guidelines (https://rust-lang.github.io/api-guidelines/) when writing, reviewing, or refactoring Rust library code. Use this skill whenever you are writing new Rust structs, enums, traits, functions, or modules that form a public API — including when designing error types, implementing…

not rated 4 8mo ago A 124 tokens

emlog-app-dev

1091

emlog/emlog-app-dev-skill

Skill Claude CodeCodex

A development guide for Emlog, a PHP-based blogging and content-management system. It covers building and changing Emlog plugins, themes, templates, and related code.

not rated 4 5mo ago A 125 tokens

go-lsp

1092

zircote/go-lsp

Plugin Claude Code

Bundles 1 command · 8 tokens together

Claude Code plugin for Go development with gopls LSP integration, 14 automated hooks for linting (golangci-lint), formatting (gofmt), testing, and security scanning (govulncheck).

not rated 4 5d ago A tokens not measured original MIT

python-lsp

1093

zircote/python-lsp

Plugin Claude Code

Bundles 1 command · 8 tokens together

Claude Code plugin for Python development with Pyright LSP integration, 15 automated hooks for type checking, linting (ruff), formatting (black), testing (pytest), and security scanning.

not rated 4 5d ago A tokens not measured original MIT

rhyean88/apple-platform-build-tools-claude-code-plugin

Skill Claude CodeCodex

Builds, tests, and archives Swift packages and Xcode projects for Apple platforms. Use when running xcodebuild, swift build, or swift test commands, discovering schemes and targets, or selecting simulator destinations for iOS, macOS, tvOS, watchOS, or visionOS.

not rated 4 24d ago A 64 tokens original MIT

rust-best-practices

1096

neoeinstein/claude-plugins

Plugin Claude Code

Bundles 2 skills · 122 tokens together

Idiomatic Rust development guidance: a Rust best-practices skill, a facet-ecosystem skill, an auto-formatting hook, and an advisory edit-time tenet guard (stringly-typed dispatch, identifier-shaped String fields, Display-logged errors, lint hygiene).

not rated 4 5d ago A tokens not measured

rust-anti-slop

1097

tristanmanchester/agent-skills

Skill Claude CodeCodex

Opinionated guardrails that reject low-evidence Rust patterns — unwrap/clone/Arc reflexes, silent error swallowing, lint suppression, stub completion. Use when writing or reviewing Rust code, or when asked to install anti-slop lint policy (workspace lints + clippy.toml) into a Rust repository.

not rated 4 1mo ago A 72 tokens

ts-language-mcp

1098

jgauffin/ts-language-mcp

MCP server Claude CodeCodexCursor +2

TypeScript Language Server exposed via MCP for AI agents. Runs locally from the ts-language-mcp npm package.

not rated 4 15d ago A tokens not measured original Apache-2.0

ShinKev/kmp-skill-library

Skill Claude CodeCodex

Convert Android XML layouts to Jetpack Compose. Use when asked to migrate Views to Compose, convert XML to Composables, or modernize UI from View system to Compose.

not rated 4 4mo ago A 41 tokens

microsoft/opentelemetry-distro-dotnet

Skill Claude CodeCodex ✓ vendor

Set up Microsoft.OpenTelemetry distro in a new .NET application. Use when adding observability to an agent, ASP.NET Core app, console app, or Agent Framework project. Covers package installation, exporter configuration, token resolver setup, baggage context, and instrumentation options.

not rated 4 yesterday A 62 tokens

LaughingJackalope/macos-skills

Skill Claude CodeCodex

Swift concurrency for macOS — actors, @MainActor, Task/TaskGroup, AsyncStream, Sendable, strict concurrency migration, and AppKit bridging patterns (DispatchQueue, NSRunLoop, XPC service concurrency). Use when writing async Swift code that interacts with AppKit, daemons, or XPC services on macOS.

not rated 4 5mo ago A 74 tokens

go-standards

1102

canonical/charm-tech

Skill Claude Code ✓ vendor

Canonical Go coding standards and best practices. Use when writing, reviewing, or refactoring Go code. Covers formatting, naming, errors, functions, structs, interfaces, and testing conventions.

not rated 4 25d ago A 42 tokens original Apache-2.0

nestjs-expert

1103

ivanshtokov/copilot-kit

Skill Claude CodeCodex

Nest.js framework expert specializing in module architecture, dependency injection, middleware, guards, interceptors, testing with Jest/Supertest, TypeORM/Mongoose integration, and Passport.js authentication. Use PROACTIVELY for any Nest.js application issues including architecture decisions, testing strategies…

not rated 4 9mo ago A 85 tokens original MIT

rails-style

1104

izkreny/agentifico

Skill Claude CodeCodex

The house Rails style, distilled from 37signals practice (Campfire, Fizzy, DHH's reviews). Use for all Rails coding, refactoring, and code review so architecture, naming, and safety standards stay consistent; fires on work touching models, concerns, controllers, routing, REST, authorization, dependencies, naming…

not rated 4 +1 today A 124 tokens original MIT

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