ProtoMCP is a browser-based playground for exploring and testing Model Context Protocol (MCP) servers. Connect to any MCP server, discover tools automatically, run them using generated forms, and inspect JSON-RPC requests and responses in real time. No curl commands. No manual payloads. Just connect and start testing. You can read more about it here: https://blogs.jaseci.org/blog/2026/03/16/building-protomcp/
Just tried it with my latest TypeScript MCP server, worked flawlessly. The real-time logs with timing data helped me catch a latency issue in one of my resource templates that I didn't even know existed. Highly recommend this for anyone working with the MCP spec.
Finally something that makes MCP testing painless 😄 Previously, working with MCP servers meant manually crafting JSON-RPC payloads, sending curl requests, and dealing with very limited visibility during debugging. Great work by the team 👏
Ratings
Ease of use
Reliability
Value for money
Customization
Report
13 views
Maker
📌
Hey Product Hunt 👋
While working with Model Context Protocol (MCP) servers, we kept running into the same problem: testing them was painful.
Most of the time it involved manually crafting JSON payloads, sending curl requests, tweaking headers, and trying to debug responses without much visibility.
So we built ProtoMCP.
It’s a browser-based playground that makes it much easier to explore and test MCP servers.
With ProtoMCP you can:
• Connect to any MCP server
• Automatically discover tools, prompts, and resources
• Run tools using generated input forms
• Inspect JSON-RPC requests and responses in real time
• Debug MCP integrations visually