# hydrant `hydrant` is an AT Protocol indexer built on the `fjall` database. it's built to be flexible, supporting both full-network indexing and filtered indexing (e.g., by DID), allowing querying with XRPCs (not only `com.atproto.*`!), providing an ordered event stream, etc. oh and it can also act as a relay! you can see [random.wisp.place](https://tangled.org/did:plc:dfl62fgb7wtjj3fcbb72naae/random.wisp.place) (standalone binary using http API) or the [statusphere example](./examples/statusphere.rs) (hydrant-as-library) for examples on how to use hydrant. for more information, look at the [documentation](https://hydrant.klbr.net).