data-layer-builder

Generate DTOs, mappers, data sources, and repositories from domain interfaces and API contracts.

1|Updated Apr 27, 2026
One-click install
npx skills add https://github.com/Saurav-snapwork/NewAppTemplate --skill data-layer-builder
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: data-layer-builder
Source: https://github.com/Saurav-snapwork/NewAppTemplate/tree/main/.github/skills/data-layer-builder
Command: npx skills add https://github.com/Saurav-snapwork/NewAppTemplate --skill data-layer-builder

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill automates the creation and wiring of the data layer for features by translating domain interfaces and API contracts into DTOs, mappers, data sources, and repository implementations.

Core Features & Use Cases

  • DTO inference and schema generation from domain models and API calls.
  • Mapper generation to convert between API responses and domain entities, with safety checks and fallback access patterns.
  • Data source and repository scaffolding, including error handling, retries, and shape guards.
  • Quick integration with existing projects using clean architecture across Flutter/Dart or TypeScript.

Quick Start

Run the data-layer-builder to generate DTOs, mappers, datasources, and repositories from your domain interfaces.

Frequently Asked Questions about data-layer-builder

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

FAQPage Schema
How do I generate a data layer from API contracts in clean architecture?

To generate a data layer from API contracts, you translate domain interfaces and API definitions into DTOs, mappers, data sources, and repository implementations automatically. This ensures consistent data access layers across features while applying shape guards and envelope validation.

How do I create DTOs and mappers for Flutter or TypeScript projects?

You can create DTOs and mappers for Flutter or TypeScript by inferring schemas from domain models and API responses. The process generates mappers with built-in safety checks and fallback access patterns to convert between API responses and domain entities.

Does the data layer generation handle error handling and retry logic?

Yes, data layer generation handles error handling and optional retry logic. It scaffolds data sources and repositories with built-in error handling, shape guards, and envelope validation to ensure robust API data access.

What is the best way to scaffold repository implementations from domain interfaces?

The best way to scaffold repository implementations from domain interfaces is to automate the orchestration of data-layer components. This approach generates repositories directly from domain contracts, ensuring consistent API data access with shape guards and fallback patterns.

Can I use API contracts to generate data sources with input validation and shape guards?

Yes, you can use API contracts to generate data sources with input validation and shape guards. The generation process satisfies requirements for input validation and envelope validation, scaffolding data sources with safety checks and fallback access patterns.