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!

New Metals release is out! It includes support for stdio in the Metals MCP server, as well as a new way to decompile class files. Take a look at the features and bug fixes: scalameta.org/metals/blog...

Our team is back from Scalar—full of energy and new ideas. While the recordings aren’t out yet, here are some of the slides our team presented.

⏳ The Scala Survey 2026 closes tomorrow, 26th March 2026, 23:59 CET! This is your last chance to shape the future of the ecosystem. Attending Scalar this Friday? Stop by our booth for an exclusive sneak peek at the early results! 🚀 Vote here: virtuslab.typeform.com/ScalaSurvey...

Hey, the Scala 2 bytecode optimizer just got ported to Scala 3! While writing nice, high level code, let the optimizer then make it faster. Try it out today on Scala 3.8.3-RC3 with -opt. Read more at scala-lang.org/blog/2026/0...

Anthropic says JSON tool calls aren't the best thing since sliced bread and that if your agent glues tool calls together using code, it becomes 37% more token-efficient with less inference and better accuracy. Should you just let it write Python in a docker sandbox though? 1/8

(1/2) It's your last chance to be an important part of the Scala community. This short survey evaluates Scala adoption and usage among developers. Click the link virtuslab.typeform.com/ScalaSurvey... and complete the survey now to help shape the future of Scala.

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.

If you're in London today, join us on the London Scala meetup. We'll be talking about how Metals can help you will large Scala and Java codebases. There will also be a great presentation on real life crashes in production. See you there! www.meetup.com/london-scal...

New Metals 1.6.6 is out! - Allow users to view the output of `-explain` - Standalone MCP server - Option to automatically shut down Bloop - Support for Play Twirl templates - Improvements to new file creation Learn more at scalameta.org/metals/blog...

Take a quick 5‑minute survey that directly impacts Scala’s roadmap, libraries, and tooling. This short survey evaluates Scala adoption and usage among developers. Scala Survey 2026 is brought to you by VirtusLab and Scala Center. virtuslab.typeform.com/ScalaSurvey...

If you're interested in Scala 2 and Scala 3 compatibility, what TASTy is, and how it fits into the whole story, take a look at this blog post by Wojciech Mazur. scala-lang.org/blog/state-...

sttp-ai now supports #Scala Native! You can use: OpenAI, Claude, Grok, Ollama, ... With different flavours of Scala: direct, functional, Future-based On various platforms: JVM & Native (not all combinations are supported, though) Enjoy :)

In the upcoming Metals version, you’ll be able to start it standalone as an MCP server! You can already try it out in two steps: First, bootstrap your executable JAR using Coursier.

The new release is out, removing all references to the old Sonatype snapshot repositories. Let us know if you encounter any issues! github.com/VirtusLab/s... x.com/ScalaSpace/...

🚀 Join us at the Wrocław Scala User Group Meetup (#17) on Feb 24 in Wrocław! 📍 Where: Hard Rock Cafe Wrocław, ul. Rynek 25 📅 When: Tuesday, Feb 24 • 6:00 PM – 8:00 PM CET 👉 RSVP here: www.meetup.com/wroclaw-sca... See you there! 👋 #Scala #Meetup #Wroclaw #TechCommunity #SoftwareEngineering

There is currently an issue with Scala CLI, which might cause it to hang on downloading needed dependencies. This is caused by a problem with the old Sonatype snapshot repositories. For example, s01.oss.sonatype.org/content/rep...

If you ever wanted to easily program on GPU with Scala in a functional way, your wait is over! Read more about on cyfra.computenode.io/

Hey, #ScalaCLI v1.12.1 is out! The changes include:default Scala version changed to 3.8.1default Scala Native version changed to 0.5.10a number of fixes, internal changes and dependency bumps,Be sure to check the release notes here: github.com/VirtusLab/s...

The new Scala Native release is here! Check it out: github.com/scala-nativ... This update includes numerous bug fixes, including one that affects Scalafmt's native binaries.

Scala 3.8 is here! A major release modernising the ecosystem and paving the way for Scala 3.9 LTS. Highlights: - Standard library compiled by Scala 3 - Better Fors & runtimeChecked stabilized - New experimental features - Update to JDK 17+ 🧵 Let's dive in...

New Metals 1.6.5 is out! - Completions for implicit classes - Auto-imports for Java - Streamable HTTP standard for MCP - Type hierarchy support Check out more at scalameta.org/metals/blog...

Latest sttp-ai contains a type-safe library-based agent loop implementation. Provide the tools (automatically derived from #Scala functions), and you're good to go! Works with OpenAI, compatible APIs, Claude, and all Scala effect systems. Next up: MCP integration.

A new version of the Scala Toolkit is now available, featuring updated libraries. Check it out at github.com/scala/toolk... We are still considering adding parallelism functionalities to the toolkit. If you're interested, join the conversation!

Bloop 2.0.18 is now available and supports sbt 2! Although the sbt server still lacks debugging support, as it needs another plugin update, you can access this functionality by exporting to Bloop. For more details, visit: github.com/scalacenter...

If you're using Scala 3 and want to stay updated with the latest versions, we have two key reminders for you! First, the upcoming Scala 3.8.0 will be released using JDK 17. You can find more details in last year's Scala blog at scala-lang.org/news/next-s....

You might have heard that the `sun.misc.Unsafe` class will no longer be accessible from JDK 26 onwards. For most developers, this won't be significant news. However, the Scala 3 implementation for lazy vals relies on this class to maintain sensible performance.

Hey, #ScalaCLI v1.11.0 is out! 🚀 The changes include: Scala 2.12 & 2.13 defaults changed to 2.12.21 and 2.13.18, respectively running tests with JVM <17 is now deprecated a number of fixes, internal changes and dependency bumps, Be sure to check the release notes here: github.com/VirtusLab/s...

Another highlight from Scala Days 2025 worth checking out 🎯 Watch “Scala, Productivity, and AI” by Krzysztof Romanowski — here → youtu.be/xgTPP9w3qU?... A must-watch for anyone looking to make Scala development smarter and more efficient. Share your favorite takeaway! 👇 (1/2)

On to another great Scala Days session 🎯 Check out “From Imports to Targets: Bazel on Autopilot with Scala Gazelle” by Wojciech Mazur — watch here → youtu.be/GbXO_9lY7Y0... If you care about build tooling and smoother project workflows, you don’t want to miss this. Drop your thoughts after! 👇 (1/2)

Here’s our next pick from Scala Days 2025 👇 “A Tour of Ox 1.0: Direct‑Style Concurrency and Resiliency” by Adam Warski — watch here → youtu.be/Gn0q5zsGarA... Give it a look — would love to hear what you think about mixing concurrency and Scala! 👇 (1/2)

Another stop in our Scala Days 2025 highlight series 🚀 Check out “Reach for the unlimited — power of Scala CLI” by Piotr Chabelski — watch here → youtu.be/TiivYKTdqZA... If you’re into streamlining builds and tooling in Scala — this is a must‑see. Drop your thoughts below! 👇 (1/2)

Continuing Scala Days 2025 highlight series 🎬 Check out “Bringing Scala to Server‑Side Wasm with WASI & Component Model” by Rikito Taniguchi — watch here → youtu.be/4nb6UsIs5WA... If you’re curious about Scala in emerging runtimes, this one’s a must-watch. Share your thoughts and takeaways! 👇 (1/2)

Up next in our Scala Days 2025 highlight series: “Unleashing the Full Potential of Metals” by Tomasz Godzik. 🎥 Check it out here → youtu.be/y18_oHTi53g... If you use Metals —or you’re curious what all the buzz is about — it’s a must-watch. Drop your thoughts after! 👇 (1/2)

Kicking off our Scala Days 2025 highlights with a fantastic talk from the conference! 🎥✨ “Say goodbye to implicits – contextual abstractions in Scala 3” by Magda Stożek 👉 youtu.be/59T9nf0PHvc... (1/2)

Metals 1.6.4 has just been release and as always it brings bug fixes as well as a number of general improvements. Take a look at the release notes for details: scalameta.org/metals/blog... #Scala

Today, instead of announcing a new feature, we would like to ask you about a possible new one. 🔎 In some other languages, it's possible to evaluate inline with the `>>>` symbol in a comment. This gives you a quick ability to evaluate some code. Should we add it to Metals?

Hey, #ScalaCLI v1.10.1 is out! 🚀 This is just a bug fix release addressing scala-cli#3949. See the full release notes here: github.com/VirtusLab/s...

Hey, #ScalaCLI v1.10.0 is out! 🚀 The changes include: Scala defaults changed to 3.7.4 and 2.13.17, support for the new Scala 3.8 REPL artifacts (to try with 3.8.nightly versions), support for adding extra directories to a docker image, a number of fixes, internal changes and dependency bumps. (1/2)

New Metals 1.6.3, codename "Osmium", has just been released! It comes with few interesting new features and we'll take the opportunity to go on a small tour.

We've just released sttp-ai 0.4.0 (formerly sttp-openai): you can now find clients for both OpenAI and Claude APIs. Same as sttp-client, the library works with any #Scala ecosystem: direct-style (synchronous), Future, cats-effect & ZIO. Enjoy! github.com/softwaremil...

This concludes our Ox feature tour - hope you've enjoyed it as much as we did! If you feel a feature is missing, or if you have a suggestion for an integration, just create an issue, we'll be happy to assist: github.com/softwaremil...

Ox feature tour, day 19: because it's direct style, integration with OpenTelemetry (metrics+logging+tracing) "just works"! To propagate tracing context inside concurrency scopes, you only need a single switch at your top-level `OxApp`!

🛠️ Next Scala Tooling Spree is coming up. 🗓️ It will take place on 09.10 17:30-19:30 CET. ✍️ If you'd like to participate please register by 7th here: forms.gle/yUurzS2KiM2...

Ox feature tour, day 18: `.pipe` and `.tap`, even extremely simple, are suprisingly useful! And there's no overhead: these are inline methods, hence a "zero-cost abstraction". Bonus: discover the `debug`, `.discar` and `.tapException` methods!

Ox feature tour, day 17: converting exceptions to `Either`s, and vice versa is trivial thanks to the inline `.catching[]` and `.orThrow` methods. A panic at one level, might become an expected error at another!

Ox feature tour, day 16: we propose error handling based on "panics" (exceptions) and "expected" errors, represented as Eithers. Working with the lattter is ergonomic thanks to Scala's boundary/break, and its Ox-provided specialization to Eithers using `either: and `.ok()`

Ox feature tour, day 15: Flows provide integration with Kafka, allowing one to implement the common publish-then-commit pattern using an elegant high-level, functional API.

Ox feature tour, day 14: declarative concurrency in flows - virtual threads are started (and terminated on error) safely, without ever needing to touch concurrency scopes! Signalling an error is as easy as throwing an exception.

Ox feature tour, day 13: flows provide I/O integration, declarative concurrency, and reactive streams compatibility!