Made some #bluesky profile cards for @mystmd.org via the widget interface (widget doesn't feel like right interface, but a handy starting point). Just needed a fetch call to api.bsky.app 🤩 wrote more about it here. more #bsky / #atproto experiments coming.
opensci.dev/articles/blu...
New release 🚀
We just shipped several UX and UI bugfixes in the Jupyter Book and MyST stack.
- mystmd v1.8.1 jupyterbook.org/releases/mys...
- myst-theme v1.1.2 jupyterbook.org/releases/mys...
We will get a jupyter-book release out to bring these in as soon as we fix our release infra 😅
💚🚀
Adding an `anywidget` style/based directive & renderer into the core @mystmd.org stack is a big win for custom interactivity and extensibility.
My contribution this week: to round off the first cut implementation - based on what've had in prod at @curvenote.com.
opensci.dev/articles/ups...
🛳️ New release of myst-theme ! This is a patch release to fix a bunch of UI/UX bugs that we uncovered after the last minor release. Thanks to everybody for testing and quick feedback!
github.com/jupyter-book...
This release was created by a community of maintainers, thanks to the Jupyter Book community for all of their support of the project! Check out the release notes above for a list of the people that contributed to each release. 🎉
It also standardizes and improves the behavior of links so that interactive, external, and internal links now have distinct and consistent styles so that your readers know what to expect.
This release brings more control over *concurrent execution* of notebook content as part of this build process. This allows you to define the number of simultaneous executions when your book builds to ensure they occur more sequentially, or reduce bugs if notebooks spawn their own parallel processes
We're proud to announce a new release of the Jupyter Book stack! This brings in a number of fixes and UI improvements! Check out release notes for each here:
mystmd 1.8: github.com/jupyter-book...
myst-theme 1.1: github.com/jupyter-book...
jupyter-book 2.1.1: github.com/jupyter-book...
Running live previews with the @mystmd.org CLI on a JupyterHub has been a challenge so far - the available theme servers are not setup well to support this. We've made progress on a solution that's almost ready to share, meantime this explains the problems it solves:
opensci.dev/articles/jup...
The page-last-updated plugin is a MyST plugin to make it clear to readers when your content was updated on each page. Here's a little post about how it works and where to learn about more plugins like it!
blog.jupyterbook.org/posts/2026/p...
I (and we @mystmd.org) have been working on releasing new version of the MyST Markdown AST. A foundational change to the representation of Jupyter outputs that sets up a lot of future possibilities - notes and thoughts are here: opensci.dev/articles/on-...
This lays the foundation for building more enriched and precise workflows around notebook outputs. We now treat *each output* from a cell independently, laying a foundation to enable things like generating labels with notebook cells.
Here's a PR to follow along:
github.com/jupyter-book...
There's an ongoing community discussion about this change, and we invite feedback from others in this MyST Enhancement Proposal discussion:
github.com/jupyter-book...
The Jupyter Book team has been working hard on a big foundational improvement to how notebook outputs are represented in MyST documents. Steve writes about this change and what it means in this post:
blog.jupyterbook.org/posts/2025-1...
We've just moved our `any-widget` based directives and renders for @mystmd.org into a public repo on @curvenote.com . After quite a while tinkering these are nicely supporting interactive visualizations - more work to fully implement the full `any-widget` interface coming
github.com/curvenote/cu...
The Jupyter Book gallery is back! Now with the MyST Engine under the hood! Thanks to @FreekPols for contributing it.
jupyterbook.org/latest/galle...
We recently pushed Jupyter Book 2, which was a breaking change for many of our users! We considered publishing a completely different package (e.g., `jupyter-book2`) but decided against it. Here's a quick rationale why:
JupyterBook 2 is released! This is now built on top of the @mystmd.org engine directly.
🚀
Please reach out on our GitHub discussions if you have any problems upgrading.
🚀💚
🚀 Exciting news! The SciPy 2025 Proceedings are officially published:
👉 proceedings.scipy.org/2025
Huge thanks to the Proceedings Committee, @curvenote.com, Jim Weiss, all the authors, and reviewers who made this happen. 🙌
@creativecommons.bsky.social and @continuous.foundation are teaming up to make reuse the default for modular science.
Join the cohort working to shape incentives for reuse in modular science. The group will kick off in January 2026.
Apply by Sunday, Nov 30
continuousfoundation.org/reuse-form
We're excited to share the next step of this project, and invite you to join us in improving this ecosystem together!
📝 Read the blog post: blog.jupyterbook.org/posts/2025-j...
📄 Read the paper 👉 proceedings.scipy.org/articles/hwc...
✨ Try Jupyter Book 2 👉 next.jupyterbook.org
Combined with federated APIs and extensibility and modularity, Jupyter Book and MyST documents enable cross-project references, making scientific knowledge more interconnected.
We're also excited to lean into "content as structured data". MyST documents are represented as a structured abstract syntax tree (AST), making them canonical and machine-readable. This enables powerful transformations and remixing across projects.
There are several core principles behind this project:
simple to use yet extensible
machine-readable content
modular & composable docs
federated APIs
computation as first-class content
🚨 New paper! The @jupyterbook.org team just published a peer-reviewed paper in the SciPy Proceedings describing the design & architecture of Jupyter Book 2 and the MyST Document Engine!
📝 blog post: blog.jupyterbook.org/posts/2025-j...
📄 paper: proceedings.scipy.org/articles/hwc...
@mystmd.org 1.5 is out, along with an updated web theme!
github.com/jupyter-book...
github.com/jupyter-book...
Improved site footers, hidden entries and external URLs in table of contents, better UI for in-browser execution plus improved docs and bug-fixes.
Release notes from the 1.4 release of @mystmd.org - the team made a bunch of improvements on social media links, plugin functionality, and documentation for contributors and developers!
github.com/jupyter-book...
A Jupyter Book team goal over the past months has been improving the documentation for users and contributors in the @mystmd.org project. I wanted to share two important pages with big updates!
A conceptual overview of MyST: mystmd.org/guide/overview
Our developer guide: mystmd.org/guide/develo...
