skills.rest
pradeepmouli
pradeepmouliCOMMUNITY
Explore all skills by this author →
GitHub

langium-zod

Generate Zod v4 TypeScript validation schemas from Langium grammar definitions.

1|Updated Feb 20, 2026
Search Tags:#typescript#code generation#zod#schema generation#cross-references#langium#ast validation
One-click install
npx skills add https://github.com/pradeepmouli/langium-zod --skill langium-zod
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: langium-zod
Source: https://github.com/pradeepmouli/langium-zod/tree/main/skills/langium-zod
Command: npx skills add https://github.com/pradeepmouli/langium-zod --skill langium-zod

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill converts Langium grammar type systems into TypeScript Zod v4 schemas, eliminating manual schema maintenance and keeping runtime validation aligned with DSL AST definitions.

Core Features & Use Cases

  • End-to-End Schema Generation: Generate Zod schema source from parsed Langium grammars or pre-built AST type models.
  • Advanced Type Handling: Map interfaces, unions, primitive aliases, arrays, keyword and regex enums, cross-references, and recursive types to appropriate Zod constructs.
  • Pipeline Customization: Apply include/exclude filters, projections, internal-field stripping, regex overrides, form metadata, strict or loose object styles, and optional conformance artifacts.
  • Integration Support: Use the programmatic API, CLI entry point, or Langium dependency-injection module in build pipelines, language servers, tooling, and network-boundary validation.
  • Use Case: Generate schemas for an expression language so editors, import pipelines, and services can validate AST-shaped data while correctly handling recursive expressions and unresolved cross-references.

Quick Start

Use the langium-zod skill to generate Zod v4 TypeScript schemas from the parsed Langium grammar and write the result to the project's generated schemas file.

Frequently Asked Questions about langium-zod

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I generate Zod schemas from Langium grammars?▼

You generate Zod v4 schemas from Langium grammars or inferred AST type models using a programmatic API or CLI entry point. The generated schemas map interfaces, unions, primitive aliases, arrays, and enums directly to appropriate Zod constructs.

Does Langium support runtime validation for AST-shaped data?▼

Langium focuses on language tooling, but you can generate runtime Zod validation schemas from Langium AST type models. This allows editors, import pipelines, and services to validate AST-shaped data at network boundaries.

Can I use Zod schemas to validate recursive types in a Langium DSL?▼

Yes, generating Zod schemas from Langium grammars supports recursive type detection. It correctly handles recursive expressions and unresolved cross-references by mapping them to appropriate Zod constructs for runtime validation.

What is the best way to keep Zod schemas aligned with a Langium DSL?▼

Generating Zod schemas directly from Langium grammar definitions eliminates manual schema maintenance. This approach keeps runtime validation aligned with DSL AST definitions throughout your build pipelines and tooling.

How do I filter or customize Zod schema generation from an AST?▼

You can apply include/exclude filters, projections, internal-field stripping, regex overrides, and strict or loose object styles when generating Zod schemas. This pipeline customization allows optional conformance artifacts and form metadata.

Can I integrate Langium Zod schema generation into a language server?▼

Yes, schema generation supports Langium dependency-injection integration for use in build pipelines, language servers, and tooling. You can use the programmatic API or CLI entry point to generate schemas during server operations.

Related Skills

Explore More Software Engineering Skills→
pradeepmoulipradeepmouli
1

langium-zod-docs

Generate Zod v4 TypeScript schemas from Langium grammar type definitions.

Community
Advanced
hashintelhashintel
1.6k

zod

Validate TypeScript data against Zod v4 schemas with metadata annotations.

Official
Advanced
eclipse-langiumeclipse-langium
28

langium

Explains Langium-based DSL tooling grammar-to-LSP integration and debugging workflows.

Official
Advanced
oakossoakoss
1

zod

Validate runtime data against Zod v4 schemas in TypeScript projects.

Official
Intermediate