Agent skills · Developer tools

50 listings on this page, in order of arrival. Each one has its own page with README, repository facts and source links.

quality-playbook ★ 38,819
Run a complete quality engineering audit on any codebase. Derives behavioral requirements from the code, generates spec-traced functional te
react18-dep-compatibility ★ 38,819
React 18.3.1 and React 19 dependency compatibility matrix.
react18-enzyme-to-rtl ★ 38,819
Provides exact Enzyme → React Testing Library migration patterns for React 18 upgrades. Use this skill whenever Enzyme tests need to be rewr
rhino3d-scripts ★ 38,819
Authoring and debugging scripts for Rhinoceros 3D (Rhino 8 and later). Use when asked to write RhinoScript (VBScript / .rvb / .vbs), RhinoPy
roslyn-analyzers ★ 38,819
Build, review, debug, package, and test Roslyn diagnostic analyzers, code fix providers, and incremental source generators. Use for Diagnost
sandbox-npm-install ★ 38,819
Install npm packages in a Docker sandbox environment. Use this skill whenever you need to install, reinstall, or update node_modules inside
scaffolding-oracle-to-postgres-migration-test-project ★ 38,819
Scaffolds an xUnit integration test project targeting Oracle in .NET solutions. Creates the test project, transaction-rollback base class, a
scoutqa-test ★ 38,819
This skill should be used when the user asks to "test this website", "run exploratory testing", "check for accessibility issues", "verify th
sponsor-finder ★ 38,819
Find which of a GitHub repository's dependencies are sponsorable via GitHub Sponsors. Uses deps.dev API for dependency resolution across npm
spring-boot-testing ★ 38,819
Expert Spring Boot 4 testing specialist that selects the best Spring Boot testing techniques for your situation with Junit 6 and AssertJ.
system-commandline-cli ★ 38,819
Use this skill when adding, modifying, or reviewing CLI commands in a .NET project built with System.CommandLine. Triggers include: creating
typescript-mcp-server-generator ★ 38,819
Generate a complete MCP server project in TypeScript using the MCP TypeScript SDK v2 (@modelcontextprotocol/server) with tools, resources, a
unit-test-vue-pinia ★ 38,819
Write and review unit tests for Vue 3 + TypeScript + Vitest + Pinia codebases. Use when creating or updating tests for components, composabl
vardoger-analyze ★ 38,819
Use when the user asks to personalize the GitHub Copilot CLI assistant, adapt Copilot to their style, use vardoger, or analyze their Copilot
vscode-ext-commands ★ 38,819
Guidelines for contributing commands in VS Code extensions. Indicates naming convention, visibility, localization and other relevant attribu
vscode-ext-localization ★ 38,819
Guidelines for proper localization of VS Code extensions, following VS Code extension development guidelines, libraries and good practices
webapp-testing ★ 38,819
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI be
winui3-migration-guide ★ 38,819
UWP-to-WinUI 3 migration reference. Maps legacy UWP APIs to correct Windows App SDK equivalents with before/after code snippets. Covers name
neon-postgres-branches ★ 85
Choose and create the right Neon branch type for testing and development. Use when users ask about Neon branching, migration testing with re
constant-time-testing ★ 6,975
Measures timing side channels in cryptographic implementations by running them, using dudect for statistical analysis and Timecop over Valgr
genotoxic ★ 6,975
Graph-informed mutation testing triage. Parses codebases with Trailmark, runs mutation testing and necessist, then uses survived mutants, un
gh-cli ★ 6,975
Enforces authenticated gh CLI workflows over unauthenticated curl, WebFetch, and MCP fetch patterns. Use when working with GitHub URLs, API
guidelines-advisor ★ 6,975
Smart contract development advisor based on Trail of Bits' best practices. Analyzes codebase to generate documentation/specifications, revie
libfuzzer ★ 6,975
Sets up and runs libFuzzer, the coverage-guided fuzzer built into LLVM, on C/C++ code that compiles with Clang. Covers harness structure, -f
mutation-testing ★ 6,975
Configures mewt or muton mutation testing campaigns — scopes targets, tunes timeouts, and optimizes long-running runs. Use when the user men
ossfuzz ★ 6,975
Enrolls a project in OSS-Fuzz, Google's free continuous fuzzing service for open source, and drives it locally. Covers project.yaml, Dockerf
property-based-testing ★ 6,975
Writes, reviews, and debugs property-based tests — Hypothesis, fast-check, proptest, jqwik, rapid, and Echidna or Medusa for Solidity invari
slicing-code-context ★ 6,975
Selects bounded, graph-informed source slices with Trailmark and delegates focused code analysis or patch-proposal work to a smaller subagen
supply-chain-risk-auditor ★ 6,975
Audits a project's dependencies for supply-chain risk: version-matched advisories for direct dependencies and the full lockfile tree, abando
testing-handbook-generator ★ 6,975
Generates Claude Code skills from the Trail of Bits Testing Handbook (appsec.guide), analyzing handbook pages and emitting SKILL.md files wi
trailmark-summary ★ 6,975
Runs a Trailmark summary analysis on a codebase. Returns auto-detected languages, entry point count, and dependency list. Use when vivisect
zeroize-audit ★ 6,975
Detects missing zeroization of sensitive data in source code and identifies zeroization removed by compiler optimizations, with assembly-lev
eas-simulator ★ 2,514
EAS service (paid). Run and control a user's app on a remote iOS/Android simulator hosted on EAS cloud. Read before running any `eas simulat
expo-data-fetching ★ 2,514
Framework (OSS). Use when implementing or debugging ANY network request, API call, or data fetching. Covers fetch API, React Query, SWR, err
expo-dev-client ★ 2,514
Framework (OSS). Build and distribute Expo development clients locally or via TestFlight for internal testing. For production TestFlight rel
expo-migrate-module ★ 2,514
Framework (OSS). Migrate an existing Apple/Swift Expo native module from the Expo Modules API 1.0 definition DSL to the 2.0 macro API (somet
expo-overview ★ 2,514
Framework (OSS). Entry point and router for every Expo or EAS task. Load this skill first — before writing code and before choosing another
expo-project-structure ★ 2,514
Framework (OSS). Folder structure for a new Expo app. Use when scaffolding or laying out a new Expo project with Expo Router, or deciding wh
expo-skill-feedback ★ 2,514
Submit feedback on an Expo skill—or Expo itself—and control bundled anonymous usage telemetry (off by default / opt-in). Submit feedback wit
expo-upgrade ★ 2,514
Framework (OSS). Guidelines for upgrading Expo SDK versions and fixing dependency issues
hf-cli ★ 11,032
Hugging Face Hub CLI (`hf`) for downloading, uploading, and managing models, datasets, spaces, buckets, repos, papers, jobs, and more on the
adversarial-reviewer ★ 25,892
Adversarial code review that breaks the self-review monoculture. Use when you want a genuinely critical review of recent changes, before mer
api-design-reviewer ★ 25,892
Comprehensive REST API design review with automated linting, breaking-change detection, and design scorecards. Catches inconsistent conventi
behuman ★ 25,892
Use when the user wants more human-like AI responses — less robotic, less listy, more authentic. Triggers: 'behuman', 'be real', 'like a hum
browserstack ★ 25,892
Run tests on BrowserStack. Use when user mentions "browserstack", "cross-browser", "cloud testing", "browser matrix", "test on safari", "tes
challenge ★ 25,892
Pre-mortem plan analysis. Imagine the plan failed 12 months from now and work backwards to find the weaknesses. Surfaces assumptions, depend
code-reviewer ★ 25,892
Code review automation for TypeScript, JavaScript, Python, Go, Swift, Kotlin, C#, .NET, Java, C, C++, Rust, Ruby, PHP, and Dart/Flutter. Ana
coverage ★ 25,892
Analyze test coverage gaps. Use when user says "test coverage", "what's not tested", "coverage gaps", "missing tests", "coverage report", or
dependency-auditor ★ 25,892
Audit and manage dependencies across multi-language projects. Identifies vulnerabilities, license conflicts, transitive dependency risks, an
focused-fix ★ 25,892
Use when the user asks to fix, debug, or make a specific feature/module/area work end-to-end. Triggers: 'make X work', 'fix the Y feature',