A skills library that gives coding agents a development process: brainstorming, planning, TDD, subagents and code review
Plugins
Memory layer for agents: plugins for Claude Code, Codex, Cursor and OpenCode, plus a CLI and SDKs that carry context across sessions
Anthropic's plugin marketplace for Claude Code: in-house plugins plus vetted third-party ones, installed via /plugin
OpenAI's official plugin: Codex reviews of your changes and task delegation to Codex from inside a Claude Code session
A plugin from Every: a brainstorm, plan, build, review and capture loop so each next task gets easier
Anthropic's official plugins for knowledge work roles: sales, support, product, marketing, legal, finance, data and enterprise search
Anthropic's legal plugin suite: contracts, privacy, employment, IP, litigation, AI governance and legal education
A GitHub Action that runs Claude Code in pull requests and issues: answers mentions, reviews and makes changes
Three skill plugins for Google Stitch: screen generation, code to design and React builds from mockups
Trail of Bits skills
Trail of Bits Skills Marketplace
Trail of Bits plugin marketplace for security work: smart contracts, C/C++ and Rust review, Semgrep, CodeQL and fuzzing
Official skills and agents from the .NET team: performance, MSBuild, NuGet, upgrades, testing, ASP.NET Core, Blazor and MAUI
A Google plugin for spec-driven development: project context, a spec and a plan before code, then implementation that follows the plan
Cloudflare's official agent skills: Workers, Durable Objects, wrangler, Pages, storage and an MCP server
AWS's official set of MCP servers, skills and plugins so an agent can build, deploy and operate on AWS
Expo's official agent skills: building, deploying, updating and debugging Expo and EAS apps
Official Elastic skills for Elasticsearch, Kibana, Observability, Security and Elastic Cloud: ES|QL, indices, dashboards, alert triage
Zapier's official MCP plugin: the agent gets actions across thousands of apps through your Zapier account
Vercel Plugin
vercel-plugin
Vercel's official plugin: an ecosystem graph, skills for Next.js, AI SDK, deployment and storage, specialist agents and deploy commands
Open prompt library with a Claude Code plugin, MCP server and CLI: search, fetch and improve prompts and skills from an agent
Official Claude Code plugin from the Next.js repo: adopting Cache Components and Partial Prefetching, and verifying changes on a running dev server
An engineering system for coding agents: 68 agents, 292 skills, hooks, memory, rules and the AgentShield security scanner
A plugin and skill that makes the agent write minimal code: reuse, stdlib and native platform features come first
A persistent memory plugin: stores observations from agent sessions and injects relevant context into new ones
A plugin that builds a knowledge graph of a codebase or wiki and opens an interactive dashboard with search, tours and diff impact