The web does not need gatekeepers: Cloudflare’s new “signed agents” pitch

The web doesn't need attestation. It doesn't need signed agents. It doesn't need Cloudflare deciding who's a "real" user agent. It needs people to remember that "public" means PUBLIC and implement basic damn rate limiting if they can't handle the traffic.

The web doesn't need to know if you're a human, a bot, or a dog. It just needs to serve bytes to whoever asks, within reasonable resource constraints. That's it. That's the open web. You'll miss it when it's gone.

Basic damn rate limiting is pretty damn exploitable. Even ignoring botnets (which is impossible), usefully rate limiting IPv6 is anything but basic. If you just pick some prefix from /48 to /64 to key your rate limits on, you'll either be exploitable by IPs from providers that hand out /48s like candy or you'll bucket a ton of mobile users together for a single rate limit.

You make unauthenticated requests cheap enough that you don't care about volume. Reserve rate limiting for authenticated users where you have real identity. The open web survives by being genuinely free to serve, not by trying to guess who's "real."

A basic Varnish setup should get you most of the way there, no agent signing required!