plumatic/schema

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

2462 stars · 254 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A Clojure/ClojureScript library for declaratively describing data shapes and validating data against those schemas. It supports descriptive validation errors, function argument/return annotation with optional runtime checks, schema-driven coercion, and test data generation.

Use cases

• validate nested data structures in Clojure
• document function argument and return types
• coerce incoming API payloads into typed data
• generate test data from schemas
• give teams a lightweight alternative to a full type system

When to choose

• you write Clojure or ClojureScript and need runtime data shape validation
• you want descriptive validation errors for complex nested maps
• you need automatic coercion of loosely-typed external data
• you want to annotate function signatures with data shapes

When to avoid

• you need compile-time static type checking rather than runtime validation
• you work outside the Clojure ecosystem
• you need a spec-based approach integrated with clojure.spec tooling

Facets

library · maturity maintenance

form-handling serialization testing developer-tools programming-languages data-science jvm jvm-scripting clojure clojurescript data-validation data-description coercion runtime-validation declarative-schemas

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