What is Model Context Protocol (MCP)?

Model Context Protocol is an open standard that enables AI assistants like Claude to connect with external data sources and tools. MCP servers expose capabilities (tools, prompts, resources) that AI clients can discover and use.

How do I test an MCP server?

Enter your MCP server URL in MCP Playground, optionally add authentication if required, and click Connect. You can then browse available tools, execute them with custom parameters, and view real-time protocol logs.

What MCP servers can I test?

You can test any MCP server with a remote URL (HTTP/SSE transport). Popular servers include integrations for Supabase, GitHub, Notion, Figma, Playwright, and many more. Browse our directory to find servers to test.

Is MCP Playground free to use?

Yes, MCP Playground is completely free with no sign-up required. Connect to any MCP server, test tools, and debug implementations at no cost.

Can I test local MCP servers?

MCP Playground works with remote servers accessible via HTTP. For STDIO-based local servers, you'll need to use a local MCP client like Claude Desktop or Cursor IDE.

Are MCP servers secure?

MCP servers can be secure when properly configured. Always use authentication for remote servers, validate all inputs, apply least-privilege access, and use HTTPS. Local STDIO servers inherit your system's security. Learn more about MCP server security best practices in our security guide.

Is MCP Playground Online free?

Yes, MCP Playground Online is completely free. Test MCP servers online without sign-up, credit cards, or installation. Our free MCP tester online works with any remote MCP server.

MCP Playground — Test MCP Servers Online Free

Test MCP Servers Online — Free, No Setup

Connect to any remote Model Context Protocol server from your browser. Explore tools, prompts, and resources — then debug with real-time JSON-RPC logs. Browse 1,000+ servers including Supabase, Playwright, Figma, GitHub, and more.

Free MCP playground for developers. Test MCP server tools, validate protocol implementations, and browse tutorials — all from one place, no credit card needed.

What is MCP Playground?

MCP Playground is a free, browser-based testing tool for the Model Context Protocol (MCP). Test MCP servers, clients, and tools directly in your browser without any installation or configuration.

Supports all core MCP features including tools, prompts, and resources. Connect to any remote server, browse capabilities, execute commands, and view real-time request/response logs.

Why Use It for Testing?

Traditional MCP testing requires local setup, dependencies, and configuration. MCP Playground eliminates all of this — just enter a server URL and start testing.

Perfect for validating server implementations, testing tools before deployment, or exploring the MCP servers list. Works with any standard MCP server that supports remote connections.

Key Features

Browser-Based

No software to install

Remote Servers

Connect via URL

Full Protocol

Tools, prompts, resources

Real-Time Logs

Live request/response

1000+ Servers

Official MCP Registry

Free & Open

No limits, no sign-up

How to Test MCP Servers

Navigate to the MCP server testing page

Enter your MCP server URL (add auth token if needed)

Click Connect to establish a connection

Browse tools, execute commands, view logs

Ready to test? Start testing MCP servers, explore the server registry, or validate your client. All features are free — no registration required.

Test MCP Servers Online — Free, No Setup

Test Any Remote MCP Server or Client

Test MCP Server in Browser

Why MCP Playground?

What is MCP Playground?

Why Use It for Testing?

Key Features

How to Test MCP Servers