How we reworked the Valibot documentation for coding agents, with an agent skill, an MCP server, a Markdown version of every page, and LLMs.txt routes.

How to build a type-safe schema registry with Valibot and doba, with automatic path finding and migration context.

A concrete experiment comparing Valibot and Zod bundle sizes, and why a 9.8x difference matters for cold start performance on edge runtimes like Cloudflare Workers.

Valibot v1.4 adds four string case transformation actions, a new validation action for local ISO timestamps, and a round of performance and compatibility improvements.

Valibot is a modular schema library with excellent startup performance, a clear mental model, strong type safety, and a design that works especially well with modern AI coding workflows.

Valibot v1.3 adds new pipeline tools for type refinement and boolean parsing, introduces schema result caching, and expands string validation with domain, JWS compact, and ISRC checks.

A few months ago, we moved the Valibot and Formisch repositories from Fabian's personal GitHub account into the Open Circle organization. This post explains what Open Circle is, why we made this change, and what this means for you and the projects going forward.

Valibot v1.2 adds powerful transformation actions for type coercion, new metadata features to improve AI tool integration, and ISBN validation.

This blog post introduces new configurations such as "typeMode" and "overrideSchema", as well as the new "toJsonSchemaDefs" function, which were added in the last two minor versions.

Valibot v1.1 is out! This version comes with many new actions and methods to simplify your code even more!

I am excited to announce the release of Valibot v1, a 1 kB alternative to Zod with a type-safe and easy-to-remember API.

Many of you have been waiting for our first stable release, and with this blog post I am happy to announce that we are very very close.

Great news! Valibot v1 RC is just around the corner. There are only a few issues holding us back.

Especially in the last months Valibot has evolved a lot. In this blog post I would like to look back on our efforts and achievements.

After 3 months of hard work I am happy to announce that Valibot v0.31.0 is finally available.

One month after I published my last post to discuss Valibot's API, it is finally time to share a first draft with you.

Today I am writing this message to you to discuss the further development of Valibot's API.