> For a complete page index of the Captain API documentation, fetch https://docs.filesearch.dev/llms.txt?excludeSpec=true

# Cloudflare R2

> Captain is a fully managed API for deterministic file search over unstructured data. Connect cloud storage (S3, GCS, Azure, R2), index files, and query retrieved chunks with metadata.


## API Docs

- Cloudflare R2 [Create R2 Sync](https://docs.filesearch.dev/reference/sync/r2/create.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://docs.filesearch.dev/openapi.json)
- [OpenAPI YAML](https://docs.filesearch.dev/openapi.yaml)