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October 26: #Scala meetup in New York! For those who couldn't attend the full Scala Days experience in Berlin, we're coming over bringing two talks: "Making the AI agents safe with Scala" by Łukasz Biały (the approach that won the best paper award at CAIS 2026) and "Where Scala meets AI" by myself.

meetup.com

Fresh Insights Straight from Scala Days 2026, Mon, Oct 26, 2026, 6:00 PM | Meetup

**Where is Scala heading next?** Scala Meetup New York: Fresh Insights Straight from Scala Days 2026 Join us in New York for a special Scala community meetup, proudly spon

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Adam Warski @warski.org · 29/09/2026

The first-ever-in-Poland Malayan Tapir was born in the Płock ZOO. He's called Visdom (as in visdom.virtuslab.com), and you can discuss both AI-native SDLC & Scala self-documenting HTTP APIs with him. VirtusLab is a proud sponsor! Pay a visit if you're in the neighbourhood:)

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Adam Warski @warski.org · 26/09/2026

What might be a better way to interface with TypeSafe AI's #Jev than through a type-safe API? And what language might be better suited for the task than #Scala? That's why sttp-ai now has a fully type-safe Jev integration module: github.com/softwaremill... Enjoy :)

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Adam Warski @warski.org · 23/09/2026

Orca (deterministic, AI-driven development flows): updated with the latest Claude / OpenAI models. Plus: define a project-specific reviewer, committed in .orca, which is automatically included in the review loop. github.com/VirtusLab/orca

github.com

GitHub - VirtusLab/orca: Deterministic, AI-driven development flows.

Deterministic, AI-driven development flows. Contribute to VirtusLab/orca development by creating an account on GitHub.

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Adam Warski @warski.org · 23/09/2026

Some improvements to Tulip-generated PR explanations: * the test/docs sections are folded by default * the side menu covers subsections and is foldable * the explanations are encouraged to use more types of diagrams - module dependencies, data flow, class hierarchy - not only sequence diagrams

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Scala Space @scalaspace.bsky.social · 16/09/2026

We've got a new home! Check out VSS: VirtusLab Scala Stack! Direct-style, AI-first, type-safe, human & agent-friendly. vss.virtuslab.com

vss.virtuslab.com

VirtusLab Scala Stack (VSS)

Direct-style Scala: type-safe code that is easy to comprehend and generate.

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Adam Warski @warski.org · 15/09/2026

The Tulip tool - explaining PRs with a walk-through, instead of a code-only review - got a new option: commenting on the PRs straight from the generated page. github.com/virtusLab/tu...

github.com

GitHub - VirtusLab/tulip: Explains GitHub PRs in a human-friendly way, using LLMs.

Explains GitHub PRs in a human-friendly way, using LLMs. - VirtusLab/tulip

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Reposted by Adam Warski

Scala Space @scalaspace.bsky.social · 14/09/2026

Following Jox, Ox now has JSON streaming <-> flows integration, covering NDJSON & streaming JSON arrays. jsoniter-based for the best performance! github.com/softwaremil...

github.com

Release v1.0.7 · softwaremill/ox

What's Changed Require only an unsupervised scope in runToInputStream (#507) @adamw Add flow-json module: streaming NDJSON and JSON array support (#506) @adamw Return short reads from runToInp...

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Adam Warski @warski.org · 14/09/2026

Jox - virtual-thread based safe concurrency & streaming in #Java - gets a dedicated flows<->JSON integration module. NDJSON & streaming-JSON-array is now built-in (since flows release 0.6.0) & waiting for your project! Plus some bug fixes, of course. github.com/softwaremill...

github.com

GitHub - softwaremill/jox: Virtual-thread based safe concurrency & streaming

Virtual-thread based safe concurrency & streaming. Contribute to softwaremill/jox development by creating an account on GitHub.

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Adam Warski @warski.org · 10/09/2026

Wading through heaps of code changes in a PR to find the meaningful bits? There's a better way than reading the raw diff. Tulip is a command-line utility that explains PRs top-down using prose, diagrams and code; starting with an overview, ending with details. github.com/VirtusLab/tu...

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Adam Warski @warski.org · 09/09/2026

Sandcat - a #Docker & dev container setup for securely running AI agents in `--dangerous` mode - has a brand new documentation page!

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Adam Warski @warski.org · 07/09/2026

The main role of a software engineer nowadays seems to be asking the right questions. Exploring paths the coding agent didn't think of, and getting a genuine "you're absolutely right". Or maybe this was always the case - we were just interrupted by coding.

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Adam Warski @warski.org · 02/09/2026

Great talk at @javazone.bsky.social by @christingorman.bsky.social on the value of minimalism ("negative space") - in software, but also in life. And it's not only about elegance - which is a trait of many minimalist designs - but predominantly of utility & function.

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Adam Warski @warski.org · 01/09/2026

Getting ready for JavaZone! Especially for the second day, 3rd of September, 14:20 in room 7 - where I'll be talking about a way to gain more confidence in the concurrent Java code you write, er, sorry, generate. See you there? :)

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Adam Warski @warski.org · 31/08/2026

The final part of our #TigerBeetle vs #PostgreSQL benchmarks are here - this time, running both databases in the cloud, as they were designed to be run. What are the results? Is TigerBeetle still that much faster, as was the case locally? softwaremill.com/tigetbeetle-...

softwaremill.com

TigerBeetle vs PostgreSQL Performance: Benchmark Harness, Cloud Tests

Discover how TigerBeetle compares to PostgreSQL in multinode cloud benchmarks for financial double-entry bookkeeping. Compare throughput, latency, and high-contention results.

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Scala Space @scalaspace.bsky.social · 31/08/2026

sttp-ai - the #Scala toolkit for working with third-party LLMs - has seen a LOT of evolution lately, especially around the API to code agent behaviour in a flexible, but of course type-safe way. Let's take a code-first tour of the most important features!

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Adam Warski @warski.org · 28/08/2026

Lots of Orca updates: * full worktree support * improved review pipeline, tuning what is sent to the agents (diffs / diffs of diffs), and the reviewer prompts * more reliable cost estimations github.com/VirtusLab/orca

github.com

GitHub - VirtusLab/orca: Deterministic, AI-driven development flows.

Deterministic, AI-driven development flows. Contribute to VirtusLab/orca development by creating an account on GitHub.

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Adam Warski @warski.org · 28/08/2026

AI took my job, now I'm a travel blogger. warski.org/blog/a-week-... j/k, I still have my job, but I did make a departure from the usual programming subjects that I write about, towards an article covering the research on how to best spend time in the Spanish Pyrenees :)

warski.org

A week in Valle de Tena (Pyrenees) with kids & teenagers | Adam Warski: programming articles & videos

The holiday season is almost over, so it’s high time to plan the next one! Maybe our experiences from a recent trip to Spain will provide you with some inspiration.

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Reposted by Adam Warski

Scala Space @scalaspace.bsky.social · 05/08/2026

Updates in our AI Scala stack: sttp-ai (client for OpenAI, Claude, and other APIs, along with an agent loop): supporting timeouts & retries; Azure OpenAI support chimp (type-safe, boilerplate-less MCP servers and clients): supporting outputSchema in tool definitions

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Scala Space @scalaspace.bsky.social · 29/07/2026

sttp-ai - new features, updated docs: • first-class Gemini support - direct API implementation, with the usual type-safety, plus agent loop integration • refined docs, describing each integration & feature with examples sttp-ai.softwaremill.com

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Adam Warski @warski.org · 28/07/2026

Orca - deterministic, AI-driven development flows - now comes with a shell! Run one of the built-in flows for a deterministic plan-implement-review loop, or create your own flow - by hand or prompting your favourite agent harness.

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Adam Warski @warski.org · 27/07/2026

My latest strategy for reviewing large amounts of AI-produced code: spot-checks. This will work, assuming that you know the language & ecosystem in which the code is produced (I still sometimes do ;) ).

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Reposted by Adam Warski

Scala Space @scalaspace.bsky.social · 23/07/2026

New features in the latest version of Ox: • `abanonOnInterrupt` for operations which aren't interruptible (e.g. Java's stdin) • resource-only scopes (`resourceScope`) • `computeIntensive` for operations which might monopolize a carrier thread github.com/softwaremil...

github.com

GitHub - softwaremill/ox: Safe direct-style streaming, concurrency and resiliency for Scala on the JVM

Safe direct-style streaming, concurrency and resiliency for Scala on the JVM - softwaremill/ox

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Adam Warski @warski.org · 16/07/2026

Orca update: flow scripts are now language-agnostic. Orca will now auto-detect the commands needed to format, lint (compile) and test a project on first use, using a cheap LLM model. These are the written to `.orca/settings.properties`, where you can adjust as needed.

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Adam Warski @warski.org · 16/07/2026

Can cleaning up technical debt be automated? Just as we're automating coding? Yes, at least partially - and the more of your codebase is AI-generated, the more frequently it should be done.

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Adam Warski @warski.org · 12/07/2026

Lots of change in Orca: deterministic, AI-driven development flows! The flows are now restartable - so when there's a mid-flow interruption, e.g. due to an intermittent error, the flow can be continued from the last checkpoint.

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Adam Warski @warski.org · 06/07/2026

Should code reviews still be a separate stage in the software development process? Code reviews used to be heavyweight: they required involving another human, which is an expensive and slow process.

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Adam Warski @warski.org · 24/06/2026

I might be late to the game, but having a dedicated server for running coding agents is a major life improvement. Dedicated server + tmux + some local/remote ssh config (loosely based on @perevillega.com articles) + scoped GH tokens and you have a secure, always-online sandbox.

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Adam Warski @warski.org · 23/06/2026

Just as we have "mechanical sympathy", soon "code sympathy" might become a non-obvious skill for software engineers: deep, intuitive understanding of how code (or a particular language) works. Question is: how far can you get *without* code sympathy?

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Adam Warski @warski.org · 10/06/2026

An echo from @rustikon.dev: what are you using #Rust for? Tooling / CLIs win with a wide margin, followed by web apps, backend network services & embedded solutions. Evangelism is also strong ;) Does this match your experience? Where do you see most demand for Rust?

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Adam Warski @warski.org · 07/06/2026

By popular demand (and thanks to contributors!), Orca - deterministic, AI-driven development flows - now supports #OpenCode and #Pi coding agents, in addition to #Claude and #Codex github.com/VirtusLab/orca

github.com

GitHub - VirtusLab/orca: Deterministic, AI-driven development flows.

Deterministic, AI-driven development flows. Contribute to VirtusLab/orca development by creating an account on GitHub.

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Adam Warski @warski.org · 03/06/2026

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

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Scala Space @scalaspace.bsky.social · 01/06/2026

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...

github.com

Release v4.0.25 · softwaremill/sttp

What's Changed Carry cookies across redirects via an opt-in CookieStorage (#2671) (#2897) @adamw Select a single supported qop from a comma-separated advertised list (#2898) @adamw Add Scala N...

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Adam Warski @warski.org · 31/05/2026

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.

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Adam Warski @warski.org · 29/05/2026

Already submitted :) See you in Berlin?

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Adam Warski @warski.org · 26/05/2026

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

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Adam Warski @warski.org · 21/05/2026

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?

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Scala Space @scalaspace.bsky.social · 21/05/2026

🚀 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

cfp.scaladays.org

Scala Days 2026

Schedule, talks and talk submissions for Scala Days 2026

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Adam Warski @warski.org · 18/05/2026

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...

github.com

GitHub - softwaremill/sttp-ai: Scala Client for AI models

Scala Client for AI models. Contribute to softwaremill/sttp-ai development by creating an account on GitHub.

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Scala Space @scalaspace.bsky.social · 18/05/2026

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/...

virtuslab.com

Our impressions from the Scala Survey 2026

Explore key insights from the Scala Survey 2026, including Scala 3 adoption rates, popular libraries, tooling preferences, and industry trends in the ecosystem.

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Adam Warski @warski.org · 16/05/2026

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 ;)

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