Reference → Airnode → v0.15 → Deployment Filessecrets.env
The secrets.env file is bundled with a config.json file and contains the secrets that the respective Airnode deployments will need. All variables defined in a secrets.env file will be available in the config.json file via variable interpolation (e.g. ${VARIABLE_NAME}).
There are few pieces of data that are highly recommend to be provided via variables. The variable names shown can be adjusted to anything desired. Just be sure to change the correlating interpolation value in config.json.
| Variable name | config.json field name | Description |
|---|---|---|
| AIRNODE_WALLET_MNEMONIC | nodeSettings.airnodeWalletMnemonic | The wallet mnemonic that will be used by the Airnode |
| CHAIN_PROVIDER_URL | chains[].providers.<name>.url | The blockchain provider url |
| SS_MY_API_KEY | apiCredentials[].securitySchemeValue | A security scheme value |
| HEARTBEAT_URL | nodeSettings.heartbeat.url | The URL to make the heartbeat request to |
| HEARTBEAT_API_KEY | nodeSettings.heartbeat.apiKey | The API key to authenticate against the heartbeat URL |
| GCP_PROJECT_ID | nodeSettings.cloudProvider.projectId | (GCP only) The GCP project ID for deployment |
Below is an example of secrets.env. Variable names cannot contain dashes (-) or start with a number.
AIRNODE_WALLET_MNEMONIC="achieve...blouse echo label"
CHAIN_PROVIDER_URL="https://sepolia.infura.io/v3/b1955...eb84f"
SS_MY_API_KEY="FRAC...X5uTd"
HEARTBEAT_API_KEY="d714a900-3b9e-4e4d-8eae-756ef06a8836"
HEARTBEAT_URL="https://your.heartbeat.service.io/airnode"
# GCP only
GCP_PROJECT_ID="my-gcp-airnode-project-01"