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By agent · Claude Code

Claude Code skills: 1068 worth installing

Skills in the open SKILL.md format that Claude Code reads. Each one has a plain-language summary and the command to install it.

Installing a skill in Claude Code

$ npx skills add <author>/<skill>

Replace the placeholder with the author and skill name from the skill's page. Start a new Claude Code session afterwards so the skill is picked up.

Skills for Claude Code

All skills

Detects MSBuild projects whose output or intermediate paths collide across projects, target frameworks, solutions or build configurations.

DevelopmentGitHub stars: 5.5kInstalls: 2.5k

Creates VS Code custom agent files with personas, tool permissions, instructions and handoffs for specialised development workflows.

DevelopmentGitHub stars: 5.5kInstalls: 2.4k

Template Authoring

.NETOfficial

Guides creation, validation and packaging of reusable .NET dotnet new templates from existing projects, preserving project settings, parameters and post-actions.

DevelopmentGitHub stars: 5.5kInstalls: 2.3k

Migrates MSTest v3 test projects to v4, updating packages, source APIs, target frameworks and runner or discovery settings.

DevelopmentGitHub stars: 5.5kInstalls: 2.3k

Test Tagging

.NETOfficial

Classifies existing tests in .NET and other frameworks, applies standard traits, and reports the suite's positive, negative and integration mix.

DevelopmentGitHub stars: 5.5kInstalls: 2.3k

Greploop

GreptileAudit warning

Iteratively improves GitHub pull requests, GitLab merge requests and Perforce changelists by applying Greptile feedback until review goals are met.

DevelopmentGitHub stars: 406Installs: 2.3k

Audits and implements SEO for Next.js App Router sites, covering metadata, sitemaps, structured data, indexing and AI crawler policy.

Marketing and SEOGitHub stars: 67Installs: 2.2k

Grade Tests

.NETOfficial

Grades curated test methods across .NET and other language frameworks, scoring assertions, structure and anti-patterns for concise PR-ready review tables.

DevelopmentGitHub stars: 5.5kInstalls: 2.1k

Facilitates evidence-aware research ideation in Scientific Agent Skills through independent generation, literature checks and traceable prioritisation.

ResearchGitHub stars: 47.4kInstalls: 2k

Guides Blazor developers through prerendering fixes for duplicate loads, state persistence, interactive routing and browser-only dependencies.

DevelopmentGitHub stars: 5.5kInstalls: 2k

Spartan

spartan.ng

Guides Angular projects in setting up and composing spartan/ui components with Brain primitives, copied Helm styling, CLI generators and accessibility patterns.

DevelopmentGitHub stars: 2.9kInstalls: 2k

Creates publication-quality scientific diagrams with Nano Banana 2, then reviews and selectively refines them with Gemini 3.6 Flash for the intended document type.

DesignGitHub stars: 47.4kInstalls: 1.9k

Monitor CI

NxAudit warning

Monitors Nx Cloud CI runs, tracks branch progress and handles self-healing fixes through verification, application and retries.

DevelopmentGitHub stars: 28Installs: 1.9k

Processes PDF files with Python and command-line tools, including text and table extraction, merging, splitting, OCR and PDF creation.

DocumentsGitHub stars: 47.4kInstalls: 1.9k

Standardises scientific and project documentation in Markdown, using Mermaid diagrams, templates and style rules as the source format.

DocumentsGitHub stars: 47.4kInstalls: 1.9k

PPTX (K-Dense)

K-DenseAudit warning

Creates, edits, reads and validates PowerPoint presentations, including slide decks, templates, speaker notes, charts and visual layouts.

DocumentsGitHub stars: 47.4kInstalls: 1.8k

DOCX (K-Dense)

K-DenseAudit warning

Creates, reads and edits Word documents and templates with structured formatting, tracked changes, comments and rendered output checks.

DocumentsGitHub stars: 47.4kInstalls: 1.8k

Queries documented public APIs across scientific, regulatory and financial databases, returning reproducible results with filters, pagination and provenance.

ResearchGitHub stars: 47.4kInstalls: 1.8k

Provides evidence-traceable developmental reviews of scholarly works and audits low-stakes assessment rubrics with local JSON/CSV quality checks.

ResearchGitHub stars: 47.4kInstalls: 1.8k

Searches BGPT, a scientific-paper MCP service, for full-text methods, results, sample sizes and quality data beyond abstracts.

ResearchGitHub stars: 47.4kInstalls: 1.8k

Creates and audits editable scientific posters in macro-free PowerPoint, checking physical dimensions, assets, accessibility, provenance and package security.

DocumentsGitHub stars: 47.4kInstalls: 1.8k

XLSX (K-Dense)

K-DenseAudit warning

Creates, edits and analyses Excel workbooks with formulas, formatting, financial models and cleaned spreadsheet data.

DocumentsGitHub stars: 47.4kInstalls: 1.8k

Organises PyTorch neural-network projects with LightningModules, data modules, Trainer configuration, callbacks, logging and distributed training.

DevelopmentGitHub stars: 47.4kInstalls: 1.8k

Aeon

K-Dense

Applies Aeon, a scikit-learn compatible Python toolkit, to classify, forecast, cluster and analyse temporal data.

DataGitHub stars: 47.4kInstalls: 1.8k

Questions

Claude Code and skills.

What is a Claude Code skill?

A folder with a SKILL.md file: instructions, and sometimes scripts and reference files, that Claude Code loads when a task calls for them.

How do I install a skill in Claude Code?

Each skill page has an install command. Run it in a terminal, then start a new Claude Code session so the skill is picked up.

What is the difference between a skill and an instructions file such as AGENTS.md?

An instructions file is loaded in every session and describes the project. A skill is loaded only when a task calls for it, so it can be long and specific without costing context on every turn.

Other agents