📢ArkType 2.2 is here.
This is a big one, and it's long overdue.
Validated functions, type-safe regex, bidirectional JSON Schema, and universal schema interop.
Here's what's new 🧵
all you need to "learn" ArkType syntax:
1️⃣ start with a typescript keyword
2️⃣ .autocomplete to discover constraints
3️⃣ compose if needed with &, |, etc.
tools are just introspectable functions...
what if you could define them like this?🤔
wish TS had rust-style pattern matching?
(it already does)🪄
🚨Standard JSON Schema v1 just dropped🚨
🟢libraries can now accept ArkType wherever they need JSON Schema
🟢100% type-safe with inference built-in
🟢day one support from AI SDK
🟢TanStack AI and MCP SDK support imminent
Next steps:
➡️share the announcement
➡️open issues on projects that can use it
➡️read the announcement
standardschema.dev/json-schema
Standard JSON Schema is already being adopted by AI SDK, Tanstack AI, and MCP SDK.
Shout out to @lgrammel.bsky.social for day 1 support and this clean example featuring @arktype.io 🙌
🎉Announcing Standard JSON Schema🎉
The next spec in the Standard Schema family is here to bring library-agnostic JSON Schema to TS.
Let's make sure everyone sees it🔁
Introducing ✨ Standard JSON Schema ✨
It's a sister spec to Standard Schema that provides a common interface for any entity that can be converted to JSON Schema
mission accomplished @mattpocock.com
the typescript ecosystem *desperately* needs type performance tooling.
it's not an overstatement to say this is one of the biggest leaps in that area in the history of the language🙇
We couldn't be more excited to get it in your hands.
Read more/join the waitlist for early access: pullfrog.com
Just tag Pullfrog or setup auto-triggers to...
🐸plan, review, or implement PRs
🐸handle chores like issue triage and labeling
🐸address feedback and CI failures on its own PRs
and it just gets better as your agents do.
Pullfrog is the solution.
It's a unified entrypoint to the agent of your choice in GitHub, with triggers that work consistently as the ecosystem evolves.
With agents becoming more and more capable, GitHub is a natural lower bound for friction.
Some agents provide their own GitHub actions, but the result is a half-baked, fragmented DX that ends up feeling bad for everyone involved.
Earlier this year, @colinhacks.com and I teamed up to create a more open TypeScript ecosystem with Standard Schema.
We couldn't get enough of each other so we're partnering to do the same for agents on GitHub.
sounds fake but I'm starting a company with my nemesis Colin P. Zod
and our first hire is @AndaristRake
and our first product is now in beta
damn too many branches😔
95% of ArkType syntax is just TypeScript.
The other 5% are extensions like this that are...
✅composable
✅consistent across data types
✅100% safe with helpful type-level error messages
once you go type("string") you never go z.back()
iyky (you don't)
In the next version of ArkType, any Standard Schema is a valid definition.
Zod migration is about to get a whole lot easier🚀
fastest, cleanest tuple validation around
RIP z.shark()
long live sharktype
👀🙏
use a wrapper
<3 thanks for the support as always.
we'll get there! big stuff in the works 🧑🍳
agonized for a long time on syntax to return a regex's capture groups rather than just validating the input string...
what do you think?
📈arkregex just hit 100k installs/week📈
if you're still using untyped RegExp() you may as well just write raw .js
string validation has never been this easy
arktype🤝arkregex
