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

# Amazon S3

> 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

- Amazon S3 [Index S3 Bucket](https://docs.runcaptain.com/reference/indexing/s3/bucket.md)
- Amazon S3 [Index S3 File](https://docs.runcaptain.com/reference/indexing/s3/file.md)
- Amazon S3 [Index S3 Directory](https://docs.runcaptain.com/reference/indexing/s3/directory.md)
- Amazon S3 [Index S3 Manifest](https://docs.runcaptain.com/reference/indexing/s3/manifest.md)

## OpenAPI Specification

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