arktypeio/arktype
TypeScript's 1:1 validator, optimized from editor to runtime observed · 2026-08-28
Health v2 · maintenance only
89/100
- Activity 91
- Release rhythm 80
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 0
- age_days: 2630
- days_rel: 57
- days_push: 57
- n_releases_24m: 732
Adoption not part of the score
7848 stars · 159 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
ArkType is a TypeScript runtime validation library whose syntax mirrors TypeScript's own type system, providing 1:1 static-to-runtime type checking with editor-first ergonomics. It offers extremely fast validation, deep introspectability via set theory, and companion tooling like ArkRegex for type-safe regular expressions.
Use cases
- validate API request bodies at runtime with types inferred from schemas
- replace Zod or Yup with a faster TypeScript-native validator
- get autocomplete and type errors while writing validation schemas
- parse and validate untrusted JSON input in a Node backend
- create type-safe regular expressions with inferred capture groups
- share validation logic between frontend forms and backend endpoints
When to choose
- you want runtime validation with syntax identical to TypeScript types
- validation performance is critical (hot paths, high-throughput APIs)
- you value editor autocomplete and readable type errors in schema definitions
- you need runtime introspection of type relationships
When to avoid
- your project uses JavaScript without TypeScript
- you need a huge ecosystem of prebuilt plugins and integrations like Zod's
- you cannot use TypeScript 5.1+ with strict mode and ESM
- you need JSON Schema generation as a primary feature
Facets
library · maturity active
type-system serialization parser developer-tools developer-tools web-development programming-languages cross-platform bun runtime-validation typescript schema-validation static-typing type-inference arkregex nodejs web-server deno
5 sources
- readme: https://github.com/arktypeio/arktype · fetched 2026-08-28 · a24c045934d5
- homepage: https://arktype.io/ · fetched 2026-08-29 · fef88c34e945
- site_page: https://arktype.io/docs/blog/arkregex · fetched 2026-08-29 · ee198f4b670d
- site_page: https://arktype.io/docs/intro/setup · fetched 2026-08-29 · 4db585c2bd00
- registry_npm: https://registry.npmjs.org/arktype · fetched 2026-08-29 · 4b42fb8dc63a
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| arktypeio/arktype | main | 89 |
For agents
markdown · JSON · MCP: product_card(name="arktypeio/arktype")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem