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 10,000+ 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.
MCP Agent Studio
Free credits on sign-upConnect any MCP server — remote or local CLI — pick from pre-built agent templates or start from scratch, then run the same prompt across up to 4 models side-by-side to find the best fit for your tools.
Agent Templates
GitHub, Stripe, Linear, Slack and more — pre-wired with the right model and system prompt. Start in seconds.
Compare Models
Run one prompt across up to 4 models simultaneously. Fastest, cheapest, and best-accuracy winners computed automatically.
10,000+ MCP Servers
Browse the full registry and add any server with one click. HTTP, SSE or local CLI (stdio) all supported.
Live JSON Inspector
Full request/response JSON for every tool call with per-call latency. Debug anything, instantly.
Save & Reuse Agents
Snapshot your servers, model, and system prompt as a named agent. Load it back in one click.
stdio / CLI Servers
Run local MCP tools (npx, uvx) alongside remote HTTP servers. Inject env vars for auth without leaving the UI.
✦ Free credits on sign-up · no credit card needed
Claude Sonnet 4.5
list_issuesGPT-4o mini
list_issuesAgent templates
Compare Mode
Send the same prompt to up to 4 models simultaneously. Watch live tool calls, compare outputs, and let automatic winner ribbons tell you which model is fastest, cheapest, and most accurate.
Write one prompt
Type the question you want answered using your MCP tools.
Pick 2–4 models
Select any combination from 30+ models. Cost estimated upfront.
See results live
Streams in parallel. Winner ribbons computed as runs complete.
Claude Sonnet 4.5
Tool calls (3)
list_subscriptions312mslist_invoices198msfilter_by_status44msGPT-4o mini
Tool calls (2)
list_subscriptions201mslist_invoices144msGemini 3.1 Flash
Tool calls (2)
list_subscriptions260mslist_invoices180msNo credit card · free credits on sign-up · up to 4 models at once
What you can do
Get started instantly. No sign-up required. Test your MCP implementation in seconds.
Connect to any remote server and explore its capabilities
Test Remote Servers
Enter any MCP server URL and connect instantly
Browse Tools & Resources
Explore available tools, prompts, and resources
Execute & Debug
Call tools, get prompts, and read resources
Full Request/Response Logs
See all MCP protocol interactions in real-time
Why MCP Playground
Instant Testing
No setup, no install. Test in seconds.
Works with Any Server
Test any remote MCP implementation.
Full Protocol Support
Tools, prompts, resources — all supported.
Real-time Logging
See every request and response live.
Ready to get started? Completely free.
Overview
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.
Benefits
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.
Features
Browser-Based
No software to install
Remote Servers
Connect via URL
Full Protocol
Tools, prompts, resources
Real-Time Logs
Live request/response
10000+ Servers
Official MCP Registry
Free & Open
No limits, no sign-up
Guide
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. features remain free — no registration required.