Q: What’s better than a dad joke? A: A dad joke your agent remembers! 😎 Chat persistence has landed in @EffectTS_ AI SDK - the first step towards persisted end-to-end chats with Vercel's @aisdk! 🚀 More to come soon!
This Week in Effect - 2025-09-26
Hi Effecters!
Welcome back to This Week In Effect (TWIE) - your weekly update of the latest developments in the Effect community and ecosystem.
Effect is a powerful TypeScript library that helps developers create complex, synchronous, and asynchronous programs. One key feature that sets Effect apart is how it leverages structured concurrency to provide features such as async cancellation and safe resource management, making it easier to build robust, scalable, and efficient programs.
To get started, below you’ll find links to our documentation as well as our guide for installing Effect. Enjoy!
Recent major updates:
- Effect 3.17 Release.
- Effect AI SDK Release.
- Durable workflows in TypeScript with
@effect/workflow- currently in alpha. - The Effect community on Discord reached 5310+ members!
- Effect crossed 11K Stars on GitHub 🌟.
Chat persistence has been added to Effect AI SDK.
Here are all the technical changes from the past week.
- Hotfix/OpenAI tool result (Bug Fix)
- Add support for Persistence to the Effect AI SDK Chat module (Feature)
- Enhance the prompt module and improve AI response errors (Enhancement)
- Add message identifiers to persisted chat options and fix Prompt construction from response parts (Feature, Bug Fix)
- Ensure decoded response metadata is always set (Bug Fix)
- Support expiration of persisted chats via chat timeToLive (Feature)
- Backport MessageStorage.unregisterReplyHandler (Improvement)
- Propagate workflow interruption to unfinished children (Improvement)
- Optimize SqlShardStorage queries (Optimization)
- Prevent EntityNotAssigned when sending to local runner (Bug Fix)
- Remove msgpackr re-exports (Bug Fix)
- Allow predicates for HttpMiddleware.cors allowOrigins (Improvement)
- Allow NodeSocket.makeNet open to be interrupted (Bug Fix)
- Optimize non-streaming response for http rpc protocol (Optimization)
- Remove msgpackr re-exports (Bug Fix)
- Propagate workflow interruption to unfinished children (Improvement)
- We’re excited to announce the first Effect Milan Meetup 🇮🇹 on Thu, Oct 16th.
Join us for the Effect Meetup in Milan next month! 🇮🇹 → Thu, Oct 16 → Piazzale Loreto 17 See you there! luma.com/ey6avxtv
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- In the latest episode of the Happy Path Programming podcast, James Ward and Bruce Eckel had an interesting conversation with Sam Goodwin, creator of Alchemy, about Infrastructure as Effects and how they’re leveraging Effect at Alchemy.
- Landry Monga published Jazz, an agentic automation CLI built for managing agentic loops in daily life workflows, backed by Effect.
- Effect Office Hours kicked off this week! hosted by Kit Langton, who was joined by Maxwell Brown, with active participation from the community.
- Maxwell Brown and Tim Smart were live on X and Twitch as they continue their work on ChEffect.
Working on ChEffect - A Local-First Meal Planning App written with Effect x.com/i/broadcasts/1…
PART 2: Developing a Twitch – Spotify Integration and ChEffect - Part 4: A Local-First App built w/ Effect & LiveStore are now on our YouTube Channel.
Don’t forget to listen to our Cause & Effect podcast hosted by Johannes Schickling and available on YouTube, X(Twitter), and audio platforms like Spotify and Apple Podcast.
This podcast highlights stories from software engineers and companies using Effect in production. Each episode explores their journey of adopting Effect, including the learning process, challenges faced, and benefits of integrating Effect into their tech stack.
We’ve published our fifth episode with Samuel Briole, CTO of Spiko, a Paris-based FinTech startup building infrastructure for issuing regulated financial products on public blockchains, specifically risk-free products.
Spiko utilizes Effect extensively, from day one, for both backend and frontend development, particularly for managing asynchronous operations, API integrations, and smart contracts.
More and more companies are adopting Effect in their projects. Here’s a list of companies looking for software engineers with Effect experience:
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Expand.ai: Founding Engineer
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Platonic Systems: Remote Effect Engineers
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Medbill.ai: Founding Software Engineers (full-stack and backend)
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Oneiro Solutions: Software Engineer - Core Team. Join Effect Discord and DM leighman for further info.
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Microsub: TS Developer
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Samsung Food: Full Stack Developer
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Margins: Product Engineer
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Precurion looking for a remote‑first Founding Engineer with Effect experience – See the job posting in the
#job-boardchannel on our Discord. -
Vitalize Care is hiring a full-stack engineer with Effect experience: Full-Stack Engineer
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Embedded Insurance is hiring for a Senior Software Engineering position.
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Betalyra, an AI consulting company from Portugal, is looking for a part-time freelance software engineer (TypeScript/Effect) with AI experience – see the job posting in the
#job-boardchannel on our Discord. -
Software Intelligence Works: Senior Full-Stack Engineer
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14.ai: Founding engineer
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Wander is hiring Software Developers with experience in Effect.
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Stealth team looking for a software engineer with Effect experience – see the job posting in the
#job-boardchannel on our Discord. -
A French-speaking startup team led by Stephan Le Dorze is looking for a freelancer to join them - see his LinkedIn post for more details.
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Freckle.io is hiring Platform Engineers with experience in Effect.
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A stealth team that has already scaled their product to 50K daily active users in the last year, is looking for Effect Developers. DM wireless on X for more info.
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Job opening for Japanese-speaking developers
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Globe Commerce: Founding Product Engineer
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Introw: Staff Software Engineer
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Heartbeat: Senior Software Engineer
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spring.new, Anthropic’s flagship customer, is hiring engineers experienced in Effect. See the job posting in the
#job-boardchannel on our Discord. -
ManageSpace is looking for a Senior Developer to mentor other developers and migrate to Effect – see the job posting in the
#job-boardchannel on our Discord. -
coteach.ai is looking for a Software Engineer – see the job posting in the
#job-boardchannel on our Discord and DM Peter Edmonds for further info. -
Small SaaS team is looking for a part-time Effect Developer to implement Effect in their stack. The job posting is available in the
#job-boardchannel on our Discord, DM jonpage for further info. -
PhosPhor is hiring engineers experienced in Effect. You may also reach out to the Phosphor team on our Discord.
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Warp is hiring a Product Engineer
Disclaimer: Please note that these job postings are shared for informational purposes, and we encourage applicants to verify details directly with the hiring companies.
The Effect Merch Store offers a selection of Effect-branded items designed for the community. All orders are processed and fully managed through Printful.
Effect Merch is here! We’re excited to announce the launch of our Effect merch page! Grab your favorite swag & show your love for Effect in style! 🧢 effect.website/merch
That’s all for this week. Thank you for being a vital part of our community. Your feedback is highly valued as we fine-tune this format. Feel free to share your thoughts, and we’ll do our best to tailor it to the needs of our community.
Effect Community Team