ICYMI: CodePen has a full-blown read/write REST and GraphQL API
blog.codepen.io/docs/api/api-v…

Now, the REST API is fully desribed by an OpenAPI 3.1 document, so it's easier for agents and automated tooling to digest and build stuff around. api.codepen.io/docs#descripti…
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Replying to @CodePen
The GraphQL API has introspection and a playground, so... same. api.codepen.io/v2/graphiql
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CodePen.IO retweeted
My mom visited last week.

We built a website with @CodePen.
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Replying to @CodePen
Here's a 2-minute video showing off WebMCP + CodePen + ChatGPT App:

youtube.com/watch?v=T0b6l2…
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Replying to @CodePen
You can take advantage of WebMCP in other ways.

@claudeai Code fan? Install the great `agent-browser` CLI tool from @vercel Labs and remind the agent it has it. Then tell it to open up CodePen `--headed` and you can control CodePen directly from there.

Here's another 2-minute video on that:
youtube.com/watch?v=WUCTj2…
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"Kinetic countdown (CSS only)" by Stijn Van Minnebruggen

codepen.io/editor/donotfo…
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The in-app notification for CodePen AI was fun to make. Penny gets to zoom around the <dialog> in a <canvas> with GSAP to make it smooth.
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How does CodePen AI do with the Cool S? With squigglevision? Friggin nailed it.

(Wait... CodePen has AI now? codepen.io/features/ai 👀)
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"Scroll-triggered animations: Variable Font: expand, shrink, squoosh" by utilitybend

codepen.io/editor/utility…
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"Ghosts" by Curtis Lawrence

codepen.io/editor/MisterC…
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It's the final week of the January #CodePenChallenge!
This week, it's Game Over 👾

codepen.io/challenges/202…

Thanks @Redisinc for sponsoring: srv.buysellads.com/ads/long/x/TCM…
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The January #CodePenChallenge continues!
This week, we're playing with puzzles 🧩

codepen.io/challenges/202…

Thanks @Redisinc for sponsoring! srv.buysellads.com/ads/long/x/TCM…
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The January #CodePenChallenge continues!
This week, it's time for some cheat codes 🎮

codepen.io/challenges/202…

Thanks @Redisinc for sponsoring: srv.buysellads.com/ads/long/x/TCM…
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"sort of custom scrollbar element" by Tom Hermans

codepen.io/tomhermans/pen…
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New Year, New #CodePenChallenge!
This month, we press start on 2026 with prompts inspired by video games 👾

codepen.io/challenges/202…

Thanks @Redisinc for sponsoring: srv.buysellads.com/ads/long/x/TCM…
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"Flip Text on Hover (Syntax challenge)" by Chris Bolson

codepen.io/cbolson/pen/NP…
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"Collision detection using style queries plus keyframes" by lee

codepen.io/leemeyer/pen/Z…
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"Happy New Year!" by SnailCrusher

codepen.io/Sector22/pen/K…
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