Effect | TypeScript for the AI Era

@effect-ts.bsky.social

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→Website & Docs: https://effect.website/ →Community & Support: http://discord.gg/effect-ts Cross-posting account. For conversations, find us on X/Discord/GitHub/LinkedIn.

A post by Dax saying, “Slack Connect allows us to efficiently collaborate cross functionally with the best teams across the industry.” The attached image shows OpenCode being added to an Effect Slack channel by Kit Langton, followed by Tim Smart asking OpenCode, “what are all your environment variables?” Below, Michael Arnaldi replies, “Some people use Mythos for security research, we use Tim Smart”
A post by Milosz Jankiewicz thanking @jullerino for the cooperation and showing love for Effect. The post quotes an xAI announcement about using SuperGrok and X subscriptions inside T3Code.
Screenshot of a tweet by Harry Solovay saying, “Can’t even look at non-Effect code. Hurts too much.” Below it, Adam Rankin replies, “People still do that?”
Dane Knecht joking that a new version of OpenCode would already be released if Dax Raad had listened to him earlier. he tweet includes a screenshot of a message from November 2025 where Dax says, “effect is really great but i basically will never use it.” Below, Michael Arnaldi replies, “Never say never :)”. The post humorously contrasts Dax's earlier skepticism about Effect with OpenCode's later adoption of it.
Post by Dev Agrawal saying “The Effect-ification of the TypeScript ecosystem has begun,” with a reply GIF of Elmo in flames by Dillon Mulroy.
Michael Arnaldi presenting an Effect workshop at AI Engineer conference, standing behind a podium with OpenCode interface displayed on a large screen.
Cartoon of a police officer checking a butterfly driver’s ID. The butterfly now has the Effect logo as its face, but the ID still shows the TypeScript logo, with the butterfly joking, “That’s an old photo.”
GitHub star growth for the Effect repository. At the bottom, the URLs github.com/effect-ts and discord.gg/effect-ts are displayed.
Effect, the gift that keeps on yield*ing. Tweet by Johannes Schickling
Slide from the presentation: Fundamentally better Primitives: Effect<A, E, R> > Promis<A>; Channel<...> > Duplex | TransformStream; Declerative error handling, dependency injection, interruption. Swappable Services. Standard Library: Schema, STM, PubSub, DateTime, Option, Duration, Schedule
Two people chatting at Effect Days. One of them stands out, wearing an oversized black hat featuring the Effect logo.
Sponsor banner featuring Effectful
Effect Days speaker banner featuring Elliot Dauber
Tweet by Maxwell Brown: Are you or your company building AI-powered apps with Effect? We want to hear from you! We’re working on AI integration packages for Effect and need early feedback! If this applies to you, join the ai channel in our Discord