# Ad-Hoc Payloads

> Sending payloads with no agreed schema, so consumers must guess at structure and break on change.

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

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Ad-Hoc Endpoints](https://banes-lab.com/records/lexicon/ad-hoc-endpoints.md) and before [Breaking API Change](https://banes-lab.com/records/lexicon/breaking-api-change.md).

## Category

- [Contracts / Interfaces / Compatibility](https://banes-lab.com/records/lexicon-category/contracts-interfaces-compatibility.md)

## Negated by

- [Schema Contract](https://banes-lab.com/records/architecture/schema-contract.md)

## Linked from

- [Contracts / Interfaces / Compatibility](https://banes-lab.com/ontology/principles/architecture-category-contracts-interfaces-compatibility.md)