# Uniform Handler Interface

> The requirement that every handler in a chain share one interface so requests pass along uniformly.

Record: `lexicon:uniform-handler-interface`
Kind: constraint
Layer: [Design Patterns Core](https://banes-lab.com/records/layer/design-patterns-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-uniform-handler-interface

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Subject/Subscriber Contract](https://banes-lab.com/records/lexicon/subject-subscriber-contract.md) and before [Uniform Traversal Interface](https://banes-lab.com/records/lexicon/uniform-traversal-interface.md).

## Category

- [Behavioral Patterns](https://banes-lab.com/records/lexicon-category/behavioral-patterns.md)

## Required by

- [Chain of Responsibility Pattern](https://banes-lab.com/records/architecture/chain-of-responsibility-pattern.md)

## Linked from

- [Behavioral Patterns](https://banes-lab.com/ontology/principles/architecture-category-behavioral-patterns.md)