We built a tiny web app that lets you connect to any MCP server and chat with it right from the browser.

It spins up MCP servers in E2B sandboxes and converts the stdio to SSE. The chat app executes on the client‑side, so your API keys are sent directly and only to their respective services (E2B, model providers) - never to our server.

Since everything is client-side, you need an OpenAI/Anthropic API key and an E2B API key to try it [https://e2b.dev].

Try it here: https://netglade.github.io/mcp-chat/

We made it as a hackathon project and won the 1st price with it, though we're not really sure what would be a meaningful way to move it forward, so we welcome all types of feedback.