# Apache Arrow Format Specification

**Canonical:** https://apis.io/apis/apache-arrow/apache-arrow-format/  
**Provider:** Apache Arrow — https://apis.io/providers/apache-arrow/  
**Documentation:** https://arrow.apache.org/docs/format/Columnar.html

Apache Arrow Format Specification is one of 3 APIs that [Apache Arrow](https://apis.io/providers/apache-arrow/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Format, IPC, and Specification. The published artifact set on APIs.io includes API documentation.

The Apache Arrow columnar format specification defines the binary layout for in-memory columnar data, including the IPC format for streaming and file-based data exchange. It covers flat arrays, nested structures, dictionaries, and extension types.

## Machine-readable artifacts (2)

- **Documentation** — https://arrow.apache.org/docs/format/Columnar.html
- **Specification** — https://arrow.apache.org/docs/format/Versioning.html

## Other Apache Arrow APIs (2)

- [Apache Arrow Flight RPC](https://apis.io/apis/apache-arrow/apache-arrow-flight-rpc/)
- [Apache Arrow Libraries](https://apis.io/apis/apache-arrow/apache-arrow-libraries/)

## Tags

Format, IPC, Specification

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/apache-arrow/apache-arrow-format/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/apache-arrow/.