u won't be able to share casts right now -- warpcast api downtime; error 500 prominent for all

more context here: 
- when casting with our frame og url, wc cast api is throwing internal server error 500
- the raw request, response is avail here (https://gist.github.com/hbrbssa/ec51ed1b9e5e122507321e3972324090)
- whats the best way to fix this @horsefacts.eth @deodad ?

I'm eth newbie..just learning
(working on @farcaster)

terminally.online

Building @warpcast and @farcaster / dad / like to read, cook, ski, code

hey! looks like this is because your embed URLs are really long: embeds are limited to a max of 256 bytes at the protocol level.

...we should be validating this sooner, you shouldn't see a frame embed if we can't embed it.

yeah, basically everything on the protocol has to have *some* limit to prevent abuse. otherwise you could DoS by making all the hubs/snapchain nodes store a bunch of garbage data.

Is there a reason for the 256 bytes limit, or is it arbitrary, like the windows 256 "character limit" for file structures?