> Aztec.nr API reference, v6.0.0 (mainnet and testnet). Index: https://docs.aztec.network/aztec-nr-api/mainnet/llms.txt

# Module capsules

Module: `noir_aztec::capsules`

## Structs

- [CapsuleArray](/aztec-nr-api/mainnet/noir_aztec/capsules/struct.CapsuleArray.md): A dynamically sized array backed by PXE's non-volatile database (called capsules). Values are persisted until deleted, so they can be e.g. stored during simulation of a transaction and later retrieved during witness generation. All values are scoped per contract address, so external contracts cannot access them.