Sandcat vs. Docker Sandboxes (sbx) - a short comparison: warski.org/blog/docker-...

Our AI development stack is shaping up nicely! As a base, using any programming language: * Sandcat to securely run agents, without having to answer tedious questions * Orca to create deterministic development flows

If you're in #Vienna, join me today for the #Scala meetup: Ox + #AI demos! First we'll do a tour of Ox 1.0, to see what Ox provides to make production-ready direct-style Scala a reality.

A bunch of updates for sttp-client 4: • Scala Native support for the http4s backend • cookie propagation across redirects using a CookieStorage • three bug fixes, both found & fixed by AI Enjoy :) github.com/softwaremil...

Meet Orca: Deterministic, AI-driven development flows. Orca Flow scripts orchestrate coding agents. No need to try to convince the LLM that reviewing code until all review comments are fixed is a good idea - the script will ensure that's the way it will be done.

Already submitted :) See you in Berlin?

As I work on #Scala projects, I'm also continuously updating our direct-style #Scala skill. The agent-generated Scala 3 code is good, but there are some rough edges sometimes. github.com/VirtusLab/sc...

I would say even more - it's the best place to work since 2010 :) All because of our team - thank you!

Jakub Cichy is working on creating a truly production-quality #MCP server & client in #Scala. I've already used Chimp to effortlessly expose an MCP server from a Scala application with just a couple lines of code. www.linkedin.com/feed/update/...

Our #Scala Skill is now compatible both with Claude & Codex - with dedicated installation instructions and necessary metadata. github.com/VirtusLab/s...

Maybe we should stop pretending that we carefully review AI-generated code. Not all software is equal. Some of it is critical, but the majority is not. What if we separated human-written & AI-generated code entirely?

🚀 Scala Days 2026 Call for Papers is now OPEN! CFP link 👉 cfp.scaladays.org/scala26/cfp Would love to see more community voices on the Scala Days stage ❤️ #Scala #ScalaDays #FunctionalProgramming #JVM #Programming #TechCommunity

In just two weeks I'll have the pleasure of visiting #Vienna for two meetups. First, #Java on 1st of June, talking about virtual threads and how they relate to reactive streams: www.meetup.com/java-vienna/...

sttp-ai update, mainly thanks to Kuba Cichy: * support for structured outputs in the agent loop * support for the built-int Claude web search tool github.com/softwaremill...

The 2026 #Scala survey results are in! Thank you for your participation :) Explore the raw data: scalasurvey2026.virtuslab.com/ And dive into our commentary: virtuslab.com/blog/scala/...

Reading about the yet-another supply-chain attack (this time, TanStack), I'm wondering if all development shouldn't be sandboxed using a Sandcat-like solution. Not only AI Agents, Human Agents as well ;)

Adams at @geecon.bsky.social 🙂 awesome gathering with @warski.org and @adambien.blog 😀

I've summarized our impressions from the #Scala Survey 2026 results in a short article: virtuslab.com/blog/scala/o... Take a look if you're curious what's the state of the Scala ecosystem!

How LLMs work:

Getting ready for @geecon.bsky.social ! See you in a week :)

Thanks to Michał Wiącek, sandcat now supports both Claude and Cursor! Enjoy :) github.com/VirtusLab/sa...

Are you wary of letting your agents run unsupervised on your machine? Rightly so! To help you choose the right tool for your workflow, Jakub Bocheński started a series on sandboxing LLM coding agents. Pick your favorite :) virtuslab.com/blog/ai/sand...

adopt-tapir is now agent-friendly: just tell your agent to bootstrap a project using adopt-tapir.softwaremill.com, and it should find its way around the API. Great entry point in your favorite Scala stack. You get a one-shot customised self-documenting self-contained server!

Software engineer interview question for 2026: what tool did you vibe-code to improve your workflow?

The latest @thoughtworks.com tech radar mentions Dev Containers specifically in the context of securing agentic development through sandboxing. Precisely what github.com/VirtusLab/sa... is all about :)

What's your dream #Scala feature? @scalar-conf.com attendees have some ideas - some #Rust inspiration (cargo, serde but for #Scala), some language features, some tooling.

The direct-style #Scala skill is now updated to: (a) work again with Claude Code (they are as fast in adding new features as in breaking old ones) ;) (b) include a chapter on starting a new project, taking adopt-tapir as a reference point Enjoy :) github.com/VirtusLab/sc...

Another great article by @askowronski.bsky.social - this time on the role of CI in agentic software development And another reminder how AI-development is different from human-development: "AI-generated tests are circular. They test what the code does, not what the code should do."

TraceValut tracks every interaction and every decision the AI Agent makes in your codebase, storing it centrally. @kgrajek.bsky.social talks about how we're making that data useful: virtuslab.com/blog/ai/inte...

Safe agentic code gen: the goal of Safe Scala, presented by Martin Odersky during @scalar-conf.com Waiting for the videos, here's a quick intro into what Safe Scala is, what are the alternatives (if any), and how to get started. Is this the future of AI agents? virtuslab.com/blog/scala/s...

Two conferences, same question: how do you write code? Fully manually, everything is AI-generated, or somewhere in-between? #Rust people seem more orderly, but also quite AI-sceptic. #Scala people on the other hand - a bit chaotic, but embracing the change.

See how Sandcat: Docker & dev container setup for securely running AI agents in `--dangerous` mode, works in a live demo! In Sandcat, all container traffic is routed through a transparent mitmproxy, enforcing network access rules and injecting secrets. www.youtube.com/watch?v=83Wm...

Great article by @askowronski.bsky.social on the different levels of context that you can provide to an AI agent. Which levels do you have at #$WORK? virtuslab.com/blog/ai/the-...

Can you cut your cloud bill by 50% without sacrificing performance? One of our clients, a global leader in cybersecurity, did exactly that by migrating their massive EDR system from GCP to Oracle Cloud Infrastructure (OCI). See how we helped them with this high-stakes migration:

Through a series of experiments, we've prepared a direct-style #Scala Skill for Claude Code. We wanted to make sure that it only contains what's really necessary, and to help Claude where it stumbles. Even with a 1M window, context remains precious!

ElasticMQ - an in-memory @awscloud.bsky.social #SQS implementation for testing - just got a new UI! Thanks to Michał Ossowski for his continued stewardship of the project and new development :)

Our client engagements often start with workshops on architecting the optimal setup for #Kafka clusters. @mmatloka.bsky.social wrote down some of the basics of the process - still a long read, but who said disaster recovery is easy? softwaremill.com/guide-to-apa...

Problems with error handling and exceptions, part N+1; is that a sensible way to categorise and implement error handling? * recoverable, "expected" errors. Fully typed, as an `Either[E, T]` or `Result<T, E>` or a checked exception

Proteus - Tapir-style #gRPC endpoints in #Scala, by Pierre Ricadat, just got #Ox integration for streaming responses! All in direct-style, leveraging #JVM's virtual threads. Check it out :) github.com/ghostdogpr/p...

Just got my copy of DDIA by @martin.kleppmann.com, 2nd edition - one of the best books if your interests lie anywhere near distributed systems. Proud to see @softwaremill.com among the acknowledgments! Even if our contribution was only financial, it's great to be able to support such works.

Best way to get a feature implemented or bug fixed? Talk to us @scalar-conf.com ;). Plus, our contributors are as active as ever!

We're closing the #Scala survey 2026 tomorrow, 26th March 2026, 23:59 CET. If you haven't yet, now's the time to take part :) virtuslab.typeform.com/ScalaSurvey2...

Another approach to consumer-agents-at-scale. Instead of sandboxing, verify that the agent stays within limits. LLM generates code on the fly, a compiler verifies it. That's the approach described in the recent "Tracking Capabilities for Safer Agents" paper by Martin Odersky et al

We're steadily getting waves of registration on Shelly - our educational programming language for drawing. (I can only guess that each "wave" is a student group doing assignments.)

Sandcat got @1password.bsky.social integration: the config can now contain `op://` references instead of secret values, which are then resolved through a service account at run-time. github.com/VirtusLab/sa...

I'm definitely having a déjà vu ... where did I see this kind of slide before? ;)

What kind of guidance does an LLM need to write a direct-style #Scala 3 application? At the baseline - not a lot, e.g. Claude is quite good both in Scala 3 & direct-style. For finer details - some additions to the prompt might be useful. Read more: virtuslab.com/blog/scala/g...

A lot of updates in Sandcat - our Docker & dev container setup for securely running AI agents in `--dangerous` mode: github.com/VirtusLab/sa...

Only one day left until Rustikon... Are you ready? 🦀 Last call to register and join the partner event: Rust on Blockchain organized by Superteam Poland 👉 luma.com/RUST-on-chai... Rustikon starts tomorrow! Registration begins at 8 am - see you there!

If you're using macOS and Homebrew, we have some great news for you! Thanks to the great work by Piotr Chabelski, installing Scala via Homebrew now includes native-image binaries. This means the CLI starts faster and doesn’t require Java to be installed on your machine.