Tutorial: Create a New DTO

Audience: Platform engineer
Time: ~20 minutes
Last updated: 2026-07-05

Outcome

An immutable DTO in packages/contracts at a contract boundary.

Steps

Add class under packages/contracts/src/DTOs/{Domain}/
Use typed properties, readonly where applicable
Export via contracts package autoload
Update dto-index.md
Bump contracts semver per breaking change policy

See ENGINEERING/dto-rules.md.

Breadcrumbs: Home → Tutorials → Create DTO