I decided to play around with the AT Protocol, so I put together a very rough & very early #PHP library to play around with the concepts.
If you're interested, check it out, & I'd love to have others contribute to round it out and make it full-featured.
Ultimately, Iβd love this library to be a starting point for working on some #ActivityPub / #ATProtocol bridging.
@ramsey since you're using PSR7 factories, you might perhaps be interested with this : https://github.com/loophp/psr17