Extend your AI agent
Plugins for AI agents, with real setup & prompting guides
MCP servers, IDE extensions, subagents, custom GPTs, and command packs you can bolt onto Claude Code, Cursor, ChatGPT, Copilot, and more. Each entry says when to use it, how to install it, and how to prompt it — and cites its sources. Attach the ones you want to your library.
Browse by agent
Developer Workflow
Automate coding chores — tests, commits, reviews, refactors, and PR hygiene.
Code Reviewer Subagent
Community pattern
A dedicated Claude Code subagent that reviews your diff before you commit.
/security-review Command
Anthropic
A reusable slash command that runs a security pass over your pending changes.
Test-on-Save Hook
Community pattern
A Claude Code hook that runs your tests automatically after every file edit.
GitHub MCP Server
GitHub
Give your agent first-party access to GitHub issues, PRs, code, and Actions.
Context7 MCP Server
Upstash
Pull version-accurate library docs into the agent's context on demand.
17 more plugins in this list
Create a free account to see all of them, search the full library, and save the ones you like.
Data & Databases
Give an agent safe, structured access to databases, warehouses, and files.
Filesystem MCP Server
Model Context Protocol
Let an agent read and write files inside directories you explicitly allow.
PostgreSQL MCP Server
Model Context Protocol
Let an agent inspect a Postgres schema and run read-only queries.
Cursor MCP Integration
Anysphere
Connect any MCP server to Cursor's agent via a project or global mcp.json.
Cline MCP Marketplace
Cline
Discover and one-click install MCP servers into Cline from an in-app marketplace.
Continue MCP Support
Continue
Add any MCP server to Continue's agent through config.yaml.
5 more plugins in this list
Create a free account to see all of them, search the full library, and save the ones you like.
Web & Search
Fetch live web pages, search the web, and pull in fresh, cited context.
Context7 MCP Server
Upstash
Pull version-accurate library docs into the agent's context on demand.
Consensus (ResearchGPT)
Consensus
A custom GPT that answers questions grounded in peer-reviewed research papers with citations.
Brave Search MCP Server
Brave
Give your agent live web and local search via the Brave Search API.
Fetch MCP Server
Model Context Protocol
Fetch a URL and convert it to clean markdown for the agent to read.
Browser Automation
Drive a real browser — navigate, fill forms, scrape, and test end-to-end.
Project Management
Connect issues, tickets, and docs so the agent works from your real backlog.
GitHub MCP Server
GitHub
Give your agent first-party access to GitHub issues, PRs, code, and Actions.
GitHub Copilot Extensions
GitHub
Third-party agents you invoke inside Copilot Chat with @-mentions.
Linear MCP Server
Linear
Work from your real Linear issues, projects, and roadmap inside an agent.
Knowledge & Memory
Persistent memory, note-taking, and retrieval over your own documents.
Context7 MCP Server
Upstash
Pull version-accurate library docs into the agent's context on demand.
Custom GPTs (GPT Builder)
OpenAI
Package instructions, knowledge files, and tools into a reusable, shareable ChatGPT.
Consensus (ResearchGPT)
Consensus
A custom GPT that answers questions grounded in peer-reviewed research papers with citations.
AIPRM for ChatGPT
AIPRM
A browser extension that adds a curated prompt-template library on top of chatgpt.com.
Slack MCP Server
Zencoder
Let an agent read Slack channels, post messages, and reply in threads.
8 more plugins in this list
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Design & Assets
Read designs, generate images, and bridge design tools with code.
Productivity & Ops
Calendars, email, messaging, and everyday operations from inside the agent.
Custom GPTs (GPT Builder)
OpenAI
Package instructions, knowledge files, and tools into a reusable, shareable ChatGPT.
GPT Actions
OpenAI
Connect a custom GPT to any REST API with an OpenAPI schema so it can call real endpoints.
ChatGPT Developer Mode MCP Apps
OpenAI
Turn ChatGPT into a full MCP client that can read and write to your own tools.
OpenAI Apps SDK
OpenAI
Build interactive, chat-native apps that run inside ChatGPT — logic and custom UI.
Advanced Data Analysis (Code Interpreter)
OpenAI
ChatGPT writes and runs Python in a sandbox to analyze files and build charts.
8 more plugins in this list
Create a free account to see all of them, search the full library, and save the ones you like.
DevOps & Cloud
Manage deployments, infrastructure, containers, and observability.
Quality & Security
Linting, security review, dependency checks, and safe-change guardrails.
Code Reviewer Subagent
Community pattern
A dedicated Claude Code subagent that reviews your diff before you commit.
/security-review Command
Anthropic
A reusable slash command that runs a security pass over your pending changes.
Test-on-Save Hook
Community pattern
A Claude Code hook that runs your tests automatically after every file edit.
Playwright MCP Server
Microsoft
Drive a real browser from your agent — navigate, click, fill, and assert.
Sentry MCP Server
Sentry
Connect your agent to Sentry issues, errors, and Seer analysis.
Agent Configuration
Rules, subagents, and command packs that shape how the agent behaves.
Cursor Project Rules
Anysphere
Persistent, version-controlled instructions that steer Cursor's agent on every request.
Windsurf Rules & Workflows
Codeium
Persistent repo rules plus slash-command workflows that script Cascade end to end.
Continue Custom Slash Commands & Context Providers
Continue
Reusable prompt commands and @-mention context providers, defined in config.yaml.
GitHub Copilot Custom Instructions
GitHub
A repo-level Markdown file that tells Copilot your project's conventions on every request.
Custom GPTs (GPT Builder)
OpenAI
Package instructions, knowledge files, and tools into a reusable, shareable ChatGPT.
3 more plugins in this list
Create a free account to see all of them, search the full library, and save the ones you like.
Frequently asked questions
What's the difference between an AI tool and a plugin?+
A tool is a product you use on its own (ChatGPT, Midjourney, Notion). A plugin is a capability you attach to an agent you already use — an MCP server, an IDE extension, a subagent, or a custom GPT — to give it new powers like reading your database or driving a browser.
What is MCP (Model Context Protocol)?+
MCP is an open standard for connecting AI agents to tools and data. An MCP server exposes a set of tools; any MCP-compatible host — Claude, Cursor, Windsurf, Cline, VS Code, Zed — can use it. That portability is why the same server works across many agents.
Are these plugins free?+
Most agent plugins are free or open-source. Some connect to paid services (which bill separately) or have paid tiers. We label each plugin's cost model and never publish a price we haven't verified — you'll see 'not independently verified' with a link to the official page when a price could change.
How do I know a plugin is safe?+
Give plugins the least access they need: scope tokens to specific repos or databases, prefer read-only modes, and treat any external content (issues, web pages, emails) as untrusted input that could contain prompt injection. Each plugin page notes when-not-to-use cautions.
Can I save plugins to come back to?+
Yes. Sign in and use the Attach button on any plugin or tool to add a snapshot — description, install steps, and an example prompt — to your personal library.
New to agent plugins?
Start with the guides — they walk through what a plugin is, how MCP works, and how to pick the right one for your workflow.