---
title: Arc reference
description: Look up Arc annotations, configuration, HTTP contracts, and current JVM feature status.
---


## Reference sections

- [Annotations](/arc/backend/kotlin/reference/annotations/)
- [Configuration](/arc/backend/kotlin/reference/configuration/)
- [HTTP contract](/arc/backend/kotlin/reference/http-contract/)
- [Shared fluent validation](/arc/backend/kotlin/reference/validation/)
- [TypeScript proxy options matrix](/arc/backend/kotlin/reference/typescript-proxy-options/)
- [Glossary](/arc/backend/kotlin/reference/glossary/)
- [Feature parity](/arc/backend/kotlin/reference/parity/)