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

# GCS

> 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

- GCS [Index GCS Bucket](https://docs.runcaptain.com/reference/indexing/gcs/bucket.md)
- GCS [Index GCS File](https://docs.runcaptain.com/reference/indexing/gcs/file.md)
- GCS [Index GCS Directory](https://docs.runcaptain.com/reference/indexing/gcs/directory.md)
- GCS [Index GCS Manifest](https://docs.runcaptain.com/reference/indexing/gcs/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)