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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

Building with Medusa

MedusaOfficial

Guides Medusa backend work: custom modules, API routes, workflows, data models and module links.

DevelopmentGitHub stars: 225Installs: 4.2k

Better Auth Best Practices

Better AuthOfficial

Configures the Better Auth server and client: database adapters, sessions, plugins and environment variables.

DevelopmentGitHub stars: 222Installs: 117k

Create Auth

Better AuthOfficial

Scaffolds authentication with Better Auth: detects the framework, configures the database adapter, adds OAuth providers and builds auth pages.

DevelopmentGitHub stars: 222Installs: 10.9k

Sets up Better Auth email and password sign-in: email verification, password reset flows, password policies and hashing.

DevelopmentGitHub stars: 222Installs: 38.8k

Better Auth Organizations

Better AuthOfficial

Configures multi-tenant organisations in Better Auth: members, invitations, custom roles, teams and RBAC.

DevelopmentGitHub stars: 222Installs: 34.3k

Better Auth Two-Factor Authentication

Better AuthOfficialAudit warning

Adds two-factor authentication with Better Auth: TOTP apps, OTP codes by email or SMS, backup codes and trusted devices.

DevelopmentGitHub stars: 222Installs: 32.3k

Better Auth Security

Better AuthOfficial

Secures a Better Auth setup: rate limiting, CSRF protection, trusted origins, cookie and session security, token encryption and audit logs.

DevelopmentGitHub stars: 222Installs: 39.5k

Agent Email Inbox

ResendOfficialAudit warning

Guides building systems where inbound email triggers actions, such as agent inboxes, with safeguards for untrusted content.

AutomationGitHub stars: 193Installs: 11.3k

Email Best Practices

ResendOfficial

Covers email deliverability and compliance: SPF, DKIM, DMARC, bounce handling, CAN-SPAM, GDPR and webhooks.

DevelopmentGitHub stars: 193Installs: 11.1k

React Email

ResendOfficial

Builds HTML email templates from React components with React Email and sends them with Resend.

DevelopmentGitHub stars: 193Installs: 10.6k

Resend CLI

ResendOfficial

Operates Resend from the terminal: send emails and manage domains, contacts, broadcasts, templates and webhooks.

DevelopmentGitHub stars: 193Installs: 11.1k

Resend

ResendOfficialAudit warning

Covers the Resend email API: transactional and batch sending, inbound email, templates, delivery events and domains.

DevelopmentGitHub stars: 193Installs: 20.5k

MongoDB Connection

MongoDBOfficial

Tunes MongoDB client connection settings such as pools and timeouts for any supported driver.

DataGitHub stars: 188Installs: 4.7k

Generates read-only MongoDB queries and aggregation pipelines from natural language, using the collection schema.

DataGitHub stars: 188Installs: 4.2k

Helps optimise slow MongoDB queries and choose the right indexes for them.

DataGitHub stars: 188Installs: 6k

MongoDB Schema Design

MongoDBOfficial

Covers MongoDB schema design patterns and anti-patterns, including migrations from SQL.

DataGitHub stars: 188Installs: 5.9k

MongoDB Search and AI

MongoDBOfficial

Guides implementing Atlas Search, Vector Search and Hybrid Search on MongoDB.

DataGitHub stars: 188Installs: 4.9k

Guides content experiments and A/B tests: design, hypotheses, metrics, sample size and analysis pitfalls.

Marketing and SEOGitHub stars: 188Installs: 3.6k

Guides structured content modelling for Sanity and other headless CMSes: schemas, references, reuse and taxonomies.

DevelopmentGitHub stars: 188Installs: 4.5k

Converts HTML and Markdown content into Portable Text blocks for Sanity.

DevelopmentGitHub stars: 188Installs: 2.5k

Renders Portable Text to React, Svelte, Vue, Astro, HTML, Markdown and plain text.

DevelopmentGitHub stars: 188Installs: 2.6k

Sanity Best Practices

SanityOfficialAudit warning

Covers Sanity development practice: schema design, GROQ queries, TypeGen, Visual Editing and framework integrations.

DevelopmentGitHub stars: 188Installs: 28.4k

Sanity Migration

SanityOfficial

Plans and implements migrations from WordPress, Contentful, Strapi, AEM and other CMSes into Sanity.

DevelopmentGitHub stars: 188Installs: 19.6k

Sanity Studio Upgrade

SanityOfficial

Produces a Sanity Studio upgrade plan that reports only the breaking changes applying to your repository.

DevelopmentGitHub stars: 188Installs: 289

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.

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