# Environment Variables¶

Environment variables are used for configuration in various areas of the codebase to facilitate automation. The constants for these variables are available in nucypher.config.constants.

Where applicable, values are evaluated in the following order of precedence:

1. CLI parameter

2. Environment variable

3. Configuration file

4. Optional default in code

## General¶

• NUCYPHER_PROVIDER_URI

Default Web3 node provider URI.

• NUCYPHER_STAKERS_PAGINATION_SIZE

Default pagination size for the maximum number of active stakers to retrieve from StakingEscrow in one contract call.

• NUCYPHER_STAKERS_PAGINATION_SIZE_LIGHT_NODE

Default pagination size for the maximum number of active stakers to retrieve from StakingEscrow in one contract call when a light node provider is being used.

## Alice¶

Password for Ethereum account used by Alice.