Vadim Smirnov

Engineering & developer advocacy
Freelance & @heycalle
I write code, give talks, record videos and occasionally make a point.

[CALL-E @heycalle]

Thanks to everyone who came by our @ProductHunt launch on Wednesday!

We met wonderful people and saw some incredible questions in the comments section!

[Vadim Smirnov @_vscodes]

@Shadowfetch @heycalle Appreciate the kind words!

[Vadim Smirnov @_vscodes]

Proud of the @heycalle team today! we just launched on Product Hunt after months of building!

Your AI agent can now make the phone calls you keep putting off. Try it and tell us what you'd use it for: https://t.co/VnJb2X7F77

[Vadim Smirnov @_vscodes]

@surjastic @heycalle Hi! Feel free to DM me :)

[Vadim Smirnov @_vscodes]

@valerioamirani @heycalle As of now, we have a use cases page on our website: https://t.co/NjVc5YxOfw

But it's definitely a topic we should cover really well. Thanks!

[Vadim Smirnov @_vscodes]

@foundrceo @heycalle omw to record a demo of that use case!

… and cancel some of my subscriptions 🙃

[David K 🎹 @DavidKPiano]

XState v6 is now in beta 🚀

Reduced API surface area (transitions are just functions), much stronger types, durable execution, new tools (CLI, viz, editor), and more to come.

Built for humans *and* agents 🤝

npm i xstate@beta

https://t.co/JJStSdXwwQ

[Vadim Smirnov @_vscodes]

It’s awesome to see a variety of ways people are using CALL-E! Excited for even more creative ideas.

[CALL-E @heycalle]

CALL-E community member built HungryCall!

It calls restaurants one by one until one fits your delivery, your budget and what you want to eat.

That, plus the four hackathon winners, with demos you can try: https://t.co/zGd5u1JO7w

[Daniel Storm @DanielStormApps]

Texting is really nice on the Duo

[Vadim Smirnov @_vscodes]

Ooof, that’s a sad one, even though it was predictable. Been using Arc since the early access invite-only days.

Guess it’s time to check back on @zen_browser

[Arc @arcinternet]

We've decided to sunset Arc on December 22, 2026.

That's not an easy sentence to write. We spent years building Arc and celebrating each and every release along the way: we have so much pride and love for what we made alongside the Arc community.

Our priority is to deliver best-in-class security for our members. Keeping a browser secure takes constant, dedicated work that is only increasing in the age of AI. Dia was built from the ground up to meet today’s security standards, so that's where our engineering and security teams will focus moving forward.

We've worked to make switching to @diabrowser as easy as possible for Arc members. Here's how:

· Your passwords, bookmarks, extensions and history come over to Dia seamlessly.
· Spaces, Folders, and Tab Groups are in Dia and import over with your data intact.
· Dia now surpasses Arc benchmarks in stability, speed, and security.
· The browser features you use in Arc are free in Dia, and the AI is optional.

Thank you for using Arc, for pushing us to make it better, and for building alongside us. The team that made Arc is the same team behind Dia, and some of our most ambitious work is just ahead. We'd love for you to be there with us when it lands.

[typecraft @typecraft_dev]

This is absolutely hilarious, and I love it! I wonder if in practice this really works well. Maybe I should test in stream? https://t.co/0XuI6wYMia

[CALL-E @heycalle]

Generic voicemail = no callback.

How to fix your AI voice agent voicemail in one edit 👇

[Adam Wathan @adamwathan]

Big one today — Tailwind is joining Shopify 🛍️

[CALL-E @heycalle]

Making one AI phone call is easy.
Building an agent that can handle the same job again and again is more interesting.

That’s what CALL-E Goals are for!

[CALL-E @heycalle]

Your AI agent shouldn’t have to figure out the same phone call twice.

With CALL-E Goals, you can define the call workflow once, grab the Goal ID, and trigger it from your app whenever you need it.

Less prompt wrangling. More reusable voice-agent logic.

[DEV Community @ThePracticalDev]

What a token actually is, how retrieval-augmented generation fits in, why context windows keep growing, and whether burning more tokens really means more productivity. Spoiler on that last one: no.

{ author: Tilde A. Thurium + @GoogleAI }

https://t.co/y9hfFlqEYd

[Marcos Hernanz @MarcosHernanz]

After doing ~60B tokens, this is my full AGENTS.md

[Chrome for Developers @ChromiumDev]

What if we could remove the friction in the email → https://t.co/Xn4t0XWCMP

The proposed Email Verification API would let your site validate the email address right in the browser! No email sent, no confirmation click needed.

[Vadim Smirnov @_vscodes]

@Heycalle We’re also running CALL-E: Your Code Is Calling - an online hackathon for developers building apps and agents that make real phone calls.

Join now!
https://t.co/KAVIopmYBe

[Vadim Smirnov @_vscodes]

I wrote a TypeScript app that calls a real restaurant, speaks to them, and returns the answer as structured object.

No scripted dialogue. I only define the goal, recipient, locale, and result schema - @Heycalle handles the conversation.

Here’s how it works: