# Dynamic Untyped Boundaries

> Passing untyped values across module or service boundaries, so type errors surface only at runtime.

Record: `lexicon:dynamic-untyped-boundaries`
Kind: anti-pattern
Layer: [Contracts Core](https://banes-lab.com/records/layer/contracts-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-dynamic-untyped-boundaries

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Untyped Payloads](https://banes-lab.com/records/lexicon/untyped-payloads.md) and before [Explicit Types](https://banes-lab.com/records/lexicon/explicit-types.md).

## Category

- [Schema / Canonical Data / Semantics](https://banes-lab.com/records/lexicon-category/schema-canonical-data-semantics.md)

## Negated by

- [Type Safety](https://banes-lab.com/records/architecture/type-safety.md)

## Linked from

- [Schema / Canonical Data / Semantics](https://banes-lab.com/ontology/principles/architecture-category-schema-canonical-data-semantics.md)