Jaseci Digest #01: news from the Jaseci open-source ecosystem
Jaseci Digest
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Welcome to Issue N.01 of Jaseci Digest, a biweekly roundup of what's happening across the Jaseci and Jac open-source ecosystem.
Every other Tuesday we'll send you a short, scannable list of releases, articles, projects, and community notes. No fluff. The goal is to keep you in the loop without piling onto your reading list.
This issue's lead: Same app, 5× the code. Jac vs FastAPI + React + TypeScript, side by side.
Featured
Built with Jac
Explore the gallery of projects built with Jaseci
A growing collection of open-source projects, hackathon winners, and production systems shipped on Jac and Jaseci. Worth a scroll if you're looking for code to read, patterns to copy, or proof that the paradigm works at scale.
Articles
Sometimes, meta-packages need to go. Here's why.
The case against meta-packages in jac-client. Bundling several dependencies behind one line hides complexity instead of removing it. Direct dependency injection turns "one opaque line into seven honest ones."
Community
JacHacks Spring 2026: 81 projects shipped in four days
Wrapped May 15 to 19 with 81 submissions on Devpost, all built on Jac. Browse the project gallery for what shipped across agentic AI, fintech, social impact, and more. Catch the opening ceremony and keynote by Jason Mars. Winners will be announced soon.
Join the Jaseci Discord
The fastest way to talk to the team and other builders. RFC chatter, debugging help, JacHacks coordination, and a steady stream of show-and-tells from the community. Worth joining whether you're shipping in production or just curious.
Releases
jaclang v0.15.3: defview and dynamic JSX
Adds a defview declarator for view declarations and <@expr /> for dynamic JSX element resolution. The compiler now ships its CLI reference guides bundled, and strict any semantics tighten further across module boundaries.
byllm v0.6.9: tool calling for local models
Brings tool calling to backends without server-side tool APIs, like Ollama and vLLM. Local-first agents just got easier to ship.
jac-client v0.3.14: native mobile via Capacitor
jac build --client mobile wraps your web app in a native Android or iOS shell with automatic HMR. One Jac codebase, three deploy targets.
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Issue N.01 · May 26, 2026
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