# Stage Contracts

> The requirement that each pipeline stage declare a typed contract for what it consumes and produces.

Record: `lexicon:stage-contracts`
Kind: constraint
Layer: [Execution Core](https://banes-lab.com/records/layer/execution-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-stage-contracts

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Monolithic Processing Function](https://banes-lab.com/records/lexicon/monolithic-processing-function.md) and before [Stepwise Transformation](https://banes-lab.com/records/lexicon/stepwise-transformation.md).

## Category

- [Streaming / Pipeline / Dataflow Processing](https://banes-lab.com/records/lexicon-category/streaming-pipeline-dataflow-processing.md)

## Required by

- [Pipeline Architecture](https://banes-lab.com/records/architecture/pipeline-architecture.md)

## Linked from

- [Streaming / Pipeline / Dataflow Processing](https://banes-lab.com/ontology/principles/architecture-category-streaming-pipeline-dataflow-processing.md)