Show HN: A MCP server to evaluate Python code in WASM VM using RustPython

digdugdirk

Is there a list of these "code sandboxes" floating around somewhere? It seems like it's going to be more and more important with LLMs playing more of a factor in development moving forward.

benno128

I've got one that uses WebAssembly to run Python, Ruby, C/C++, JS: https://runno.dev/articles/sandbox/

someguy101010

https://github.com/r33drichards/mcp-js mcp for running javascript locally and safely using v8

ushakov

i work on E2B, we are open-source sandbox runtime used by Perplexity, Manus, Hugging Face among others.

check it out: https://e2b.dev

apignotti

Does anyone know if there is work on the idea of letting MCP-like "servers" run on the client-side? I.e. in the same browser tab as ChatGPT or Claude?

This specific example would make much more sense if it could run sandboxed client-side.

nilslice

all of the servers deployed to mcp.run[0] are Wasm modules, and can run client side. they run in our cloud too, but you could use mcpx to pull them locally instead.

you can also get the raw wasm via our API and run them anywhere you can run Extism[1], the open source wasm runtime & framework that underpins it all. (Including this hyper-mcp project!)

[0]: https://mcp.run [1]: https://github.com/extism/extism

TZubiri

Sounds cool. We already have browser use though!

You can also roll your own with selenium and c vision or selectors.

ubermonkey

I cannot be the only GenX nerd who reads that and thinks "Master Control Program" from Tron.

TZubiri

Or just use Chatgpt.