34 replies

1. cthos 🐱 Mastodon 2 min later

   @zachleat ...this makes me want to achieve the opposite of four hundos, specifically for llms

2. Zach Leatherman Mastodon 6 min later

   > Cumulative Layout Shift (CLS): Layout shifts caused by ads, images without dimensions, or injected content can move elements between the time an agent identifies them and the time it attempts an interaction.

   are we really doing “Agent pls click at 50x,50y”

   1. iamdtms Mastodon 12 min later

      @zachleat
      era of agentic layout shifts 2026+

   2. cthos 🐱 Mastodon 15 min later

      @zachleat Oh, yes. Everything in the ecosystem is as brittle and as ill-thought-out as you imagine.

      1. Zach Leatherman Mastodon 38 min later

         @cthos oh my

         1. cthos 🐱 Mastodon 1 hr later

            @zachleat Imagine my horror, armed with this knowledge, about literally everything Google announced at Google I/O.

   3. Jason Garber Mastodon 1 hr later

      @zachleat we ain’t doing shit my guy

      fuck those agents

   4. Private reply Mastodon 11 hr later
3. Roderick Gadellaa Mastodon 8 min later

   @zachleat Gonna absolutely use this to make sure my website is as unusable as possible for AI bots haha. ✨

   1. Zach Leatherman Mastodon 9 min later

      @rgadellaa inb4 AI bots start browsing with JS disabled 😅

      1. Private reply Mastodon 1 hr later
4. Duffeh Bluesky 11 min later

   Possibly layout shifts creates issues if it uses screenshots in chunks to understand the page.

   1. Zach Leatherman Bluesky 37 min later

      oof! if you thought HTML took too many tokens in comparison to markdown…

      1. Duffeh Bluesky 40 min later

         Not sure what you mean ?

         1. Zach Leatherman Bluesky 45 min later

            that’s the premise of markdown as the lingua franca of agents, no? image processing (screenshots) would be way more resource intensive

            1. Duffeh Bluesky 47 min later

               Ah got you. Yeah I was surprised when I read some of them read off screenshots. But hey when does ai do things efficiently.

5. Cory Dransfeldt Bluesky 20 min later

   New goal: one zero and four hundos

6. Barry Pollard Bluesky 1 hr later

   I think it's more for AI browsers interacting with the page on your behalf. And (like users!) they can get confused/click the wrong thing if content shifts around unexpectedly.

   Note I wasn't involved in this project, so take everything I say here as my opinion rather than official fact!

   1. Zach Leatherman Bluesky 2 hr later

      yeah, makes sense. Lots of the same mistakes we were making 20 years ago writing E2E tests 😅

      1. Stuart Langridge Bluesky 2 hr later

         “if I have seen further, it is by standing on the s̶h̶o̶u̶l̶d̶e̶r̶s̶ ̶o̶f̶ ̶g̶i̶a̶n̶t̶s̶ ̶ pile of books I stole but don’t know how to learn from”
         — AIsaac Newton

7. Pär Björklund Bluesky 1 hr later

   How can I maximize layout shift for agents?

   1. Zach Leatherman Bluesky 2 hr later

      agentic web fonts

8. Matt Wilcox Mastodon 1 hr later

   @zachleat Lol; so they feel we will be chasing a *good* agentic score?

   Hahahahaahaaaaaaa!

   HAHAHAAHAAAAAA!

   Yes; tell me how badly I hurt you. Please. More detail.

   1. Zach Leatherman Mastodon 2 hr later

      @mattwilcox I am receiving many comments similar to this one 😅

9. Evan Freeze Mastodon 2 hr later

   @zachleat agent == 3 selenium processes in a trench coat?

10. Khalid ⚡ Mastodon 2 hr later

    @zachleat I imagine some agents are going to web pages to "see" the layout. They take screenshots and then scan those images. Then they steal your whole vibe and aesthetic probably.

    1. Zach Leatherman Mastodon 2 hr later

       @khalidabuhakmeh do I get to keep my soul or no

       1. Khalid ⚡ Mastodon 2 hr later

          @zachleat that's in the Soul+ plan for $9.99/mo

11. Henri Helvetica 🧑🏾‍🚀🇭🇹 Bluesky 3 hr later

    WELL THEN!

    1. Zach Leatherman Bluesky 3 hr later

       if web sites start jiggling to combat agentic harvesting I’m out of this industry

       1. Henri Helvetica 🧑🏾‍🚀🇭🇹 Bluesky 3 hr later

          it's get super weird

       2. Simeon.__proto__ Bluesky 3 hr later

          Start? I have bad news, my friend

       3. David Fitzgibbon Bluesky 13 hr later

          Feeling exactly the same way. “Make sure you design your site so that we can avoid people seeing it entirely, so our profit”.

          Hell no.

12. Cordt Bluesky 3 days later

    Well, no surprise they added this metric 🫠