# PowerSync Changelog: February 2026 > We are running a hackathon starting on 6 March, and the theme is sync-powered AI. We have loads of prizes planned, including over $5,000 in core cash prizes plus prizes from our partners - Supabase, TanStack, Neon, Mastra and Cactus. - Published: 2026-03-05 - Author: Kobie Botha - Category: Product Update - Source: https://powersync.com/blog/powersync-changelog-february-2026 --- Important announcement! We are running a hackathon starting on Friday, and the theme is sync-powered AI. We have loads of prizes planned, including bonus prizes from our partners - Supabase, TanStack, Neon, Mastra and Cactus. Sign up using the link [here](https://x.com/powersync_/status/2026734435295764725?s=20), and read more in our featured story down below. ## **Product updates shipped in February:** * **Sync Streams in Beta** : This is a big one. We now consider Sync Streams production-ready and recommended over Sync Rules. There’s a lot that we shipped since the Alpha: JOINs, CTEs, multiple queries per stream, nested subqueries, table-valued functions, and clearer validation errors. We've also added TanStack React Query support (`useQuery`/`useQueries` with a streams option) and Vue/Nuxt support via `useSyncStream`. Check out the [release notes](https://releases.powersync.com/announcements/sync-streams-are-now-in-beta). * Note: we’re still ironing out some kinks when auto-migrating more complex Sync Rules to Sync Streams. * **New PowerSync CLI and Agent Skills** : We overhauled the CLI for better DX, support for self-hosted instances, and it's now open source 🎉 The main win: you edit instance and sync config in YAML files in your project instead of long command-line flags. As an extra bonus, we published Agent Skills that help coding agents build with PowerSync (thanks to everyone who _prompted_ us to get these out). [New CLI](https://releases.powersync.com/announcements/introducing-the-new-powersync-cli) and [Agent Skills](https://releases.powersync.com/announcements/introducing-powersync-agent-skills). * **Sync Diagnostics Client** : We refreshed the UI (shadcn/ui, TanStack Router), added state tracking, and a new SQLite File Inspector (drag-and-drop, no login). It’s now easier to inspect data, debug sync, and view the JWT. [Try it out](https://github.com/powersync-ja/powersync-js/tree/main/tools/diagnostics-app). * **PowerSync Service** * **v1.20.0** : You can now pass connection params (e.g. `connect_timeout`, `maxPoolSize`) via the database URL. Sync config errors now report source offsets so you can fix Sync Streams/Rules errors quickly. [Full changelog](https://releases.powersync.com/announcements/powersync-service). * **v1.19.1** : Adds SQL Server 2019 support. [Changelog](https://releases.powersync.com/announcements/powersync-service). * **v1.19.0** : Adds support for configuring logging level & format for self-hosted, and MongoDB compression support via `snappy` and `zstd`. [Changelog](https://releases.powersync.com/announcements/powersync-service). * **Client SDKs** * **Attachment APIs** for our JavaScript SDKs are now in `@powersync/common`, resulting in fewer dependencies to manage and improved consistency with APIs from our other SDKs. [Docs](https://docs.powersync.com/client-sdks/advanced/attachments) * We enabled **trusted publishing** for npm in our JavaScript SDKs for more secure package publishing. [PR #841](https://github.com/powersync-ja/powersync-js/pull/841). * **Swift v1.11.0** : Adds tvOS support. [Changelog](https://releases.powersync.com/announcements/powersync-swift-sdk) * **.NET** : We shipped several DX updates ahead of the imminent beta release: more .NET-idiomatic schema definition and `Watch` APIs. [Changelog](https://github.com/powersync-ja/powersync-dotnet/blob/main/PowerSync/PowerSync.Common/CHANGELOG.md) and [SDK Reference](https://docs.powersync.com/client-sdks/reference/dotnet). * **Rust SDK** : We released an experimental Rust SDK for standalone native environments. It’s an early entry point for Rust/C++, automotive, robotics, or embedded use cases where HTTP and SQLite are available. Your feedback will shape if and how this SDK evolves. [Release notes](https://releases.powersync.com/announcements/introducing-the-powersync-rust-client-sdk-experimental) and [SDK reference](https://docs.powersync.com/client-sdks/reference/rust). * **New demos & guides** * **AWS ECS** : Step-by-step guide for self-hosting PowerSync on AWS ECS. [Guide](https://docs.powersync.com/maintenance-ops/self-hosting/aws-ecs). * **Offline-First Apps with TanStack DB and PowerSync** : Conflict resolution strategies and a ticket-tracking demo. [Blog post](https://powersync.com/blog/offline-first-apps-with-tanstack-db-and-powersync) and [demo](https://github.com/powersync-community/poweroff). ## **Behind the scenes** : * In **Unleashing the Power of Sync** , our founding DevRel Engineer Dev Agrawal argued why sync engines beat manual or keyed state, and how to build agentic chat with PowerSync. [Read](https://powersync.com/blog/unleashing-the-power-of-sync). * Thanks **raffidahmad** for a MySQL contribution that changes replication so we no longer store full row copies, which reduces storage use. [PR #530](https://github.com/powersync-ja/powersync-service/pull/530). * Congrats to **LucaL1fe** on launching [Raccoon](https://www.raccoon.kids/) with PowerSync - gamified family task management that makes chores fun! * **Proposal: Tauri SDK** : We’re exploring a Tauri (v2) SDK - Rust-backed SQLite and sync with a JavaScript API, starting with desktop. We’re particularly interested to know if your app’s business logic lives in Rust or JS. [Discussion #873](https://github.com/powersync-ja/powersync-js/discussions/873). * **Proposal: Incremental Compacting** : We're proposing an incremental compact implementation so you can run compact more often (e.g. hourly) with less overhead. Especially relevant at high data volumes. [Discussion #537](https://github.com/orgs/powersync-ja/discussions/537). ## **Feature story: PowerSync AI hackathon** We're running a virtual hackathon and the theme is AI apps that use PowerSync as the sync engine. There's over **$5,000** in core cash prizes plus bonus partner and category prizes. Our partners include Supabase, Neon, Mastra, TanStack, and Cactus. There’s a category prize for best local-first submission, best use of our Rust SDK, and prizes for best use of each of the partner technologies. The hackathon **starts tomorrow,** **Friday March 6** ; submissions close March 20; and we’ll announce winners March 25. Keep your eyes peeled for a blog post on Friday March 6 with detailed guidelines and rules! Sign up [here](https://form.typeform.com/to/zzswESaj). I'm excited to see what you build! That’s it for this issue.