Individual skill

rust-domain-boundaries

Use when modeling, validating, refactoring, or reviewing Rust service domain boundaries, especially when replacing primitive String fields with newtypes, parse-don't-validate constructors, private invariants, TryFrom/FromStr parsers, request DTO boundaries, or property tests.

plugins/LVTD-LLC/skills/skills/rust-domain-boundaries/SKILL.md

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Last checked: Nov 4, 2026

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Repository stars (not skill ratings): 1,532
Repository last updated: Nov 6, 2026
License: Apache-2.0

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rust,domain-modeling,newtypes,validation,property-testing Declared skill tag
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references/property-testing.mddoc · 2,080 bytes

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# Rust Domain Boundaries

Use this skill to keep invalid states out of Rust service internals. Parse raw
input once at the boundary, store validated values in narrow domain types, and
make unchecked construction difficult.

## Core Workflow

1. Find raw input boundaries: HTTP payloads, path/query parameters, config
   files, environment variables, database rows, queues, and CLI flags.
2. Separate transport DTOs from domain types. Let `serde` deserialize incoming
   shapes, then convert DTO fields into validated domain values.
3. Replace primitive strings with small types for ruled values: email addresses,
   usernames, passwords, subscriber names, slugs, tenant IDs, idempotency keys,