# MCP Playground > Free browser-based tool for testing MCP (Model Context Protocol) servers and clients. Includes a security scanner, prompt library, MCP server registry, and 65+ developer guides. MCP Playground (mcpplaygroundonline.com) is the go-to tool for developers building with Model Context Protocol. Test any remote MCP server, audit it for security issues, explore the MCP server registry, and read in-depth guides on MCP development, authentication, and agent tooling. ## Free Tools - [MCP Server Tester](https://mcpplaygroundonline.com/mcp-test-server): Connect to any remote MCP server, list its tools, prompts, and resources, and execute them from the browser — no installation required. - [MCP Client Tester](https://mcpplaygroundonline.com/mcp-test-client): Test MCP client connections and debug client-side behaviour against a live server. - [MCP Security Scanner](https://mcpplaygroundonline.com/mcp-security-scanner): Free tool that runs 27+ checks across transport security, authentication, injection risks, information disclosure, CORS policy, security headers, and rate limiting. - [MCP Server Registry](https://mcpplaygroundonline.com/mcp-registry): Searchable directory of MCP servers across categories including databases, dev tools, productivity, cloud services, and more. - [Prompt Library](https://mcpplaygroundonline.com/prompt-library): Curated prompts for working with MCP tools and AI agents. - [Agent Skills](https://mcpplaygroundonline.com/skills): Featured agent skill configurations for common workflows. ## Blog & Guides ### Automation - [5 MCP Automation Recipes Every Developer Should Steal in 2026](https://mcpplaygroundonline.com/blog/mcp-automation-workflows-developer-recipes-2026): Playwright MCP lets Claude run and fix browser tests in a closed loop. GitHub MCP turns a natural language prompt into a… - [How to Automate Reddit Ads with Claude AI and MCP — Subreddit Intelligence, Community Targeting, and Real Results](https://mcpplaygroundonline.com/blog/reddit-ads-mcp-claude-automation-guide): Reddit's eCPM is $2.29 versus Meta's $11.73 — but most advertisers never unlock why certain subreddits convert and other… - [Cross-Platform Ad Reporting with Claude AI and MCP — One Prompt for All Your Ad Data](https://mcpplaygroundonline.com/blog/cross-platform-ad-reporting-mcp-claude-guide): Most advertisers optimize each platform in a silo and never see the full picture. The real waste in paid media isn't ins… - [How to Automate Snapchat Ads with Claude AI and MCP — AR Intelligence, Story Performance, and Real Results](https://mcpplaygroundonline.com/blog/snapchat-ads-mcp-claude-automation-guide): Snapchat reaches 90% of 13–24 year olds — but most advertisers never get past surface-level metrics. Swipe-up rate, stor… - [How to Automate X (Twitter) Ads with Claude AI and MCP — Honest Workflows for a Platform in Transition](https://mcpplaygroundonline.com/blog/x-twitter-ads-mcp-claude-automation-guide): X Ads offers genuinely unique capabilities — keyword targeting based on what people tweet, lower CPMs than Meta, and rea… - [How to Automate TikTok Ads with Claude AI and MCP — Workflows, Creative Intelligence, and Real Results](https://mcpplaygroundonline.com/blog/tiktok-ads-mcp-claude-automation-guide): TikTok's algorithm rewards speed. The brands winning on TikTok Ads in 2026 are rotating creative faster, catching fatigu… - [How to Automate Pinterest Ads with Claude AI and MCP — E-Commerce Workflows, Shopping Ads, and Real Results](https://mcpplaygroundonline.com/blog/pinterest-ads-mcp-claude-automation-guide): Pinterest is the only ad platform where users arrive already planning to buy. Save rate, closeup rate, and shopping cata… - [How to Automate Google Ads with Claude AI and MCP — Tools, Workflows, and Real Results](https://mcpplaygroundonline.com/blog/google-ads-mcp-claude-automation-guide): The Google Ads MCP server gives Claude live access to your campaign data. Here is how to connect it, which of the four a… - [How to Automate Amazon Ads with Claude AI and MCP — Workflows, Tools, and Real Results](https://mcpplaygroundonline.com/blog/amazon-ads-mcp-claude-automation-guide): Amazon's official MCP server launched in open beta February 2026, giving Claude live access to Sponsored Products, DSP, … - [How to Automate LinkedIn Ads with Claude AI and MCP — B2B Workflows That Actually Work](https://mcpplaygroundonline.com/blog/linkedin-ads-mcp-claude-b2b-automation-guide): LinkedIn drives 75–85% of B2B social leads, and most of that spend is managed manually. The LinkedIn Ads MCP server give… - [10 Real Automations You Can Build with Zapier MCP + Claude Right Now](https://mcpplaygroundonline.com/blog/zapier-mcp-claude-automations-guide): Zapier MCP gives Claude live access to 8,000+ apps. Here are 10 practical automations — from morning briefing agents to … - [How to Automate Meta Ads with Claude AI and MCP — Real Workflows, Real Results](https://mcpplaygroundonline.com/blog/automate-meta-ads-claude-ai-mcp): The era of manually exporting CSVs to analyze ad performance is over. Learn how the Meta Ads MCP server connects Claude … ### MCP - [The MCP 2026 Roadmap: Everything That's Changing for Developers](https://mcpplaygroundonline.com/blog/mcp-2026-roadmap-whats-changing-for-developers): Anthropic donated MCP to the Linux Foundation. The 2026 roadmap dropped in March. MCP Apps shipped interactive UIs in Ja… ### Development - [10 Things You Can Do With the GitHub MCP Server](https://mcpplaygroundonline.com/blog/10-things-you-can-do-with-github-mcp-server): GitHub's official MCP server gives your AI assistant direct access to repos, PRs, issues, Actions, security alerts, and … - [10 Things You Can Do With Railway MCP Server](https://mcpplaygroundonline.com/blog/10-things-you-can-do-with-railway-mcp-server-official): Railway’s official @railway/mcp-server: verify CLI auth, list/create projects, deploy services and templates, manage env… - [10 Things You Can Do With Vercel MCP Server](https://mcpplaygroundonline.com/blog/10-things-you-can-do-with-vercel-mcp-official-server): Vercel’s official Model Context Protocol server at mcp.vercel.com: search docs, manage projects and deployments, debug b… - [How Datadog's MCP Server Brings Live Observability to AI Agents](https://mcpplaygroundonline.com/blog/datadog-mcp-server-live-observability-ai-agents): Datadog's remote MCP server (GA March 2026) bridges the gap between AI coding agents and live production observability. … - [How to Add Authentication to Your MCP Server — OAuth 2.1, Bearer Tokens, and What the Spec Actually Requires (2026)](https://mcpplaygroundonline.com/blog/mcp-server-oauth-authentication-guide): Every developer who publishes a remote MCP server eventually hits the same wall: how do I stop anyone on the internet fr… - [Build and Deploy an MCP Server on Cloudflare Workers — Complete Guide (2026)](https://mcpplaygroundonline.com/blog/build-mcp-server-cloudflare-workers-guide): Cloudflare Workers is the fastest path from MCP idea to globally deployed server — zero cold starts, 300+ edge locations… - [MCP Server Not Working? Fix Error -32000, Timeouts, and Connection Failures (2026)](https://mcpplaygroundonline.com/blog/mcp-server-troubleshooting-common-errors-fix): The definitive troubleshooting guide for MCP server errors. Fix error -32000 (connection closed), timeouts, authenticati… - [Model Context Protocol Discovery & Initialization](https://mcpplaygroundonline.com/blog/model-context-protocol-discovery-initialization): Learn how MCP discovery works and why it matters. This guide explains how clients discover tools, what happens during in… - [Wrap Existing APIs as MCP Tools (Simple Guide)](https://mcpplaygroundonline.com/blog/wrap-existing-apis-as-mcp-tools-simple-guide): Learn how to wrap existing REST APIs as MCP tools so AI clients can safely and reliably call them. This guide shows you … - [Build a Custom MCP Server Using Node.js (Simple Guide)](https://mcpplaygroundonline.com/blog/build-custom-mcp-server-using-nodejs-simple-guide): Learn how to build a basic MCP server using Node.js, step by step. This guide shows you how to create a clean, typed API… - [What Is the Model Context Protocol (MCP)? A Developer's Guide](https://mcpplaygroundonline.com/blog/what-is-model-context-protocol): Most LLM apps hit the same wall quickly: they need fresh context and the ability to call real systems, without piles of … ### Deployment - [How to Deploy MCP Servers: Vercel vs Railway vs Render vs Heroku vs Fly.io (2026 Guide)](https://mcpplaygroundonline.com/blog/deploy-mcp-server-vercel-railway-render-heroku-flyio): Complete guide to deploying remote MCP servers on the top 5 cloud platforms. Compare Vercel, Railway, Render, Heroku, an… ### Tutorial - [The Complete Guide to MCP Config Files — Claude Desktop, Cursor, Lovable, and More](https://mcpplaygroundonline.com/blog/complete-guide-mcp-config-files-claude-desktop-cursor-lovable): Every MCP client reads a slightly different config format. This guide covers exactly where to put your MCP server config… - [How to Test Any MCP Server Online — No Setup Required](https://mcpplaygroundonline.com/blog/how-to-test-mcp-server-online-no-setup-required): You built (or found) an MCP server and want to see what it actually does before wiring it into your editor. This guide s… - [Where to Host MCP Servers for Free: Cloudflare, Vercel, and More (2026)](https://mcpplaygroundonline.com/blog/free-mcp-server-hosting-cloudflare-vercel-guide): Compare every free MCP server hosting option in 2026. Deploy to Cloudflare Workers, Vercel, FastMCP Cloud, mcphosting.io… - [Deploy an MCP Server to Production with Docker (Complete Guide)](https://mcpplaygroundonline.com/blog/deploy-mcp-server-docker-production-guide): How to containerize and deploy an MCP server for production. Covers Dockerfile, Docker Compose, StreamableHTTP transport… - [Multi-Agent AI with MCP: How to Use CrewAI and LangChain with MCP Servers](https://mcpplaygroundonline.com/blog/multi-agent-mcp-crewai-langchain-guide): Build multi-agent AI systems that use MCP servers for tools. Practical guide with CrewAI and LangChain examples — connec… - [Context7 MCP Server: Up-to-Date Docs for Your AI Coding Assistant (Setup Guide)](https://mcpplaygroundonline.com/blog/context7-mcp-server-setup-guide): Context7 is an MCP server that fetches up-to-date library documentation so your AI assistant can reference current APIs … - [Claude Code MCP: How to Add Servers, Best MCP Servers, and Complete Setup Guide](https://mcpplaygroundonline.com/blog/claude-code-mcp-setup-best-servers-guide): Learn how to add MCP servers to Claude Code CLI with the claude mcp add command. Covers all 3 scopes (local, project, us… - [ChatGPT MCP Support: Complete Setup Guide with OpenAI Agents SDK](https://mcpplaygroundonline.com/blog/chatgpt-mcp-openai-agents-sdk-setup-guide): ChatGPT now supports MCP servers. Learn how to connect MCP servers to ChatGPT via the OpenAI Agents SDK — hosted tools, … - [Build Your First MCP Server with Python and FastMCP (Step-by-Step Tutorial)](https://mcpplaygroundonline.com/blog/build-mcp-server-python-fastmcp-tutorial): Learn to build a Model Context Protocol server in Python using FastMCP. Step-by-step tutorial with tools, resources, Cla… - [AWS MCP Servers - Complete Guide to Amazon Web Services MCP Integration](https://mcpplaygroundonline.com/blog/aws-mcp-servers): Learn how to use AWS MCP servers to connect Claude and Cursor to Amazon Web Services. Setup guides for S3, Lambda, EC2, … - [How to Set Up MCP in Claude Desktop (Complete 2026 Guide)](https://mcpplaygroundonline.com/blog/how-to-setup-mcp-claude-desktop): Step-by-step guide to configure MCP servers in Claude Desktop. Learn the exact config file location, JSON format, and ho… - [How to Configure MCP Servers in Cursor IDE (2026 Guide)](https://mcpplaygroundonline.com/blog/cursor-mcp-setup-guide): Complete guide to setting up MCP servers in Cursor. Learn how to connect Claude to external tools, databases, and APIs d… - [How to Publish Your MCP Server to the MCP Registry (Step-by-Step Guide)](https://mcpplaygroundonline.com/blog/how-to-publish-your-mcp-server-to-registry): Learn how to publish your MCP server to the official MCP Registry so others can discover and use it. Includes testing ti… ### Security - [From Shodan to Shell: How Attackers Find and Exploit Exposed MCP Servers — And How to Check Yours](https://mcpplaygroundonline.com/blog/mcp-server-security-complete-guide-2026): A real attacker needs under 3 minutes to find your exposed MCP server on Shodan, enumerate every tool without credential… - [MCP Security in 2026: Tool Poisoning, OWASP MCP Top 10, and How to Protect Your Agents](https://mcpplaygroundonline.com/blog/mcp-security-tool-poisoning-owasp-top-10-mcp-scan): The biggest security threats to MCP servers and agents in 2026: tool poisoning attacks, prompt injection, rug pulls, and… - [Safeguarding MCP Servers From Prompt Injection: Practical Tips From Real-World Builds](https://mcpplaygroundonline.com/blog/safeguarding-mcp-servers-from-prompt-injection): Once you give an LLM access to tools, files, or APIs through MCP, things get real very quickly. Here are practical appro… - [Are MCP Servers Secure? Complete Security Guide (2026)](https://mcpplaygroundonline.com/blog/why-security-matters-in-mcp-servers): Are MCP servers secure? Learn MCP server security best practices, risks, and how to protect your systems. Complete guide… ### Recipe - [Build an AI Standup Bot with Slack + Gmail MCP (Complete Recipe)](https://mcpplaygroundonline.com/blog/slack-email-standup-bot-mcp-recipe): Step-by-step guide to building an AI standup bot that reads your Slack channels and Gmail inbox, synthesises key updates… - [Build an AI E-commerce Order Manager with Stripe MCP + Shopify MCP](https://mcpplaygroundonline.com/blog/ecommerce-order-manager-stripe-shopify-mcp-recipe): Manage orders, refunds, and products with AI. Use the official Stripe MCP and Shopify Storefront MCP to look up payments… - [PostgreSQL MCP: Build a Claude Analytics Agent (Setup + Examples)](https://mcpplaygroundonline.com/blog/postgres-mcp-claude-analytics-agent-recipe): Connect Claude to PostgreSQL with the official Postgres MCP server. Run natural language queries, explore schemas, and b… - [Playwright MCP: Browser Automation with AI (Complete Setup Guide)](https://mcpplaygroundonline.com/blog/playwright-mcp-browser-automation-recipe): What is Playwright MCP? Set up the official Microsoft Playwright MCP server for Claude and Cursor. Automate browsers wit… - [Build an AI Code Documentation Generator with MCP (GitHub + Filesystem Recipe)](https://mcpplaygroundonline.com/blog/code-documentation-generator-github-mcp-recipe): Auto-generate READMEs, API docs, and code summaries with AI. Use GitHub MCP and Filesystem MCP to read repos and source … - [Build an AI Customer Support Summarizer with MCP (Intercom + Zendesk Recipe)](https://mcpplaygroundonline.com/blog/customer-support-summarizer-intercom-zendesk-mcp-recipe): Summarize support tickets and conversations with AI. Use Intercom MCP and Zendesk MCP to pull recent tickets, generate d… - [Build an AI-Powered File Organizer with MCP (Filesystem + Google Drive Recipe)](https://mcpplaygroundonline.com/blog/ai-powered-file-organizer-mcp-recipe): Automate file sorting and organization with AI. Use Filesystem MCP and Google Drive MCP to sort downloads, organize fold… - [Build an AI GitHub PR Reviewer with MCP (Complete Recipe)](https://mcpplaygroundonline.com/blog/build-ai-github-pr-reviewer-mcp-recipe): Step-by-step guide to building an automated AI code reviewer that analyzes GitHub pull requests, suggests improvements, … - [Build an AI Database Query Assistant with Natural Language SQL (MCP Recipe)](https://mcpplaygroundonline.com/blog/build-ai-database-query-assistant-natural-language-sql): Learn to build an AI assistant that converts natural language questions into SQL queries. Query databases using plain En… - [Automate Jira Tasks from Meeting Notes with AI (Notion + Jira MCP Recipe)](https://mcpplaygroundonline.com/blog/automate-jira-tasks-from-meeting-notes-notion-mcp-recipe): Stop manually creating Jira tickets after meetings. Learn to automatically extract action items from Notion meeting note… ### Guide - [Claude MCP Apps — Full Guide: Interactive UIs Inside AI Conversations (2026)](https://mcpplaygroundonline.com/blog/claude-mcp-apps-full-guide): Everything you need to know about Claude MCP Apps — the January 2026 update that lets AI render dashboards, forms, and c… - [MCP vs REST API — What's Different? Complete Developer Comparison (2026)](https://mcpplaygroundonline.com/blog/mcp-vs-rest-api-whats-different): MCP and REST API solve different problems. Learn the key architectural differences between Model Context Protocol and RE… - [MCP vs Function Calling vs REST APIs: When to Use Each for AI Agents](https://mcpplaygroundonline.com/blog/mcp-vs-function-calling-vs-api-comparison): A practical comparison of MCP, function calling, and REST APIs for AI agent development. Covers architecture differences… - [Postgres MCP vs Supabase MCP: Which Should You Use? (Setup + Comparison)](https://mcpplaygroundonline.com/blog/postgres-mcp-vs-supabase-mcp-setup-comparison): Detailed comparison of PostgreSQL MCP and Supabase MCP servers. Learn the differences in tools, auth, setup, and use cas… - [Awesome MCP Servers - Complete List of 50+ Best MCP Servers in 2026](https://mcpplaygroundonline.com/blog/awesome-mcp-servers): The definitive awesome MCP servers list with 60+ curated servers updated for 2026. Discover the best Model Context Proto… - [Remote MCP Servers - Test and Connect to MCP Servers Online](https://mcpplaygroundonline.com/blog/remote-mcp-servers): Learn about remote MCP servers and how to test them online without local installation. Discover public MCP servers you c… - [10 Best MCP Servers for Developers in 2026](https://mcpplaygroundonline.com/blog/best-mcp-servers-2026): Curated list of the most useful MCP servers for developers. Includes GitHub, Supabase, Playwright, Notion, Slack, and mo… ### Testing - [How QA Teams Should Test MCP Servers](https://mcpplaygroundonline.com/blog/how-qa-teams-should-test-mcp-servers): A simple guide for ensuring security, reliability, and correct behavior. Learn how QA teams can effectively test MCP ser… ## Optional - [Sitemap](https://mcpplaygroundonline.com/sitemap.xml): Full XML sitemap of all pages.