MCP Playground

Hey Product Hunters 👋

We built MCP Playground to solve a simple problem: testing MCP servers shouldn't require downloading desktop apps, running CLI tools, or asking an LLM to tell you what the MCP server does:

Our solution:
A web-based tool where you can connect to any MCP server and immediately see what it exposes — tools, resources, and prompts. Execute them interactively, view request/response logs, and understand exactly what's happening.

Key features:

• Zero setup — Open your browser and connect

• Full visibility — See and test everything the server exposes

• Secure — OAuth support with AES-256-GCM encryption

This is open source (MIT license) from Emergent Labs, an AI native product studio building AI-native products. We're making this freely available because good tooling benefits everyone working with MCP.

Give it a try and let us know what could be better. We're taking feedback seriously as we shape what comes next.

Thanks for the support! 🙏

Congratulations on the launch today best of luck with everything

MCP Playground looks like a solid way to cut down the guesswork when working with MCP servers Having an interactive environment to test prompts and integrations could save a lot of time and headaches Curious how it handles more complex setups Can you simulate multiple server interactions at once or is it mainly single-server testing Either way this seems like a must-have for developers diving into MCP

Hi @ephemeral_truth This looks super handy 👏

Testing MCP servers without all the local setup pain is a huge win for developers. Love the focus on visibility and transparency. It feels like the kind of tooling shift we’re also seeing in security, where clarity and real-time insight matter more than ever.

At ZeroThreat.ai, we’ve seen how agentless, browser-based pentesting can completely change how teams validate systems securely. So this direction really resonates. Excited to see where MCP Playground goes next!

Really cool. This is actually a huge pain! I used terminal and some localhost tools before but very inconsistent. Also very hard to make sure all annotations etc are exposed. Every AI agent app has their own quirks regarding what mcp metadata they support etc.

Looks cool, can't wait to play with it.

Hey @ephemeral_truth, congrats on launching MCP Playground! 🚀 Your zero-setup approach for testing MCP servers is brilliant—I really appreciate how it eliminates the need for downloading desktop apps or running CLI tools. That full visibility into tools, resources, and prompts with interactive execution is a huge win for developers debugging MCP integrations. Excited to see where you take this next. Best of luck with today's launch!