Configuration and Secrets

Destination bindings can read config and credential values from named namespaces.

destination = retl.destinations.load(
    "retl/meta",
    binding_name="meta_primary",
    credential_namespace="destinations.meta",
    config_namespace="destinations.meta",
)

The default environment resolver maps namespace segments to environment variables with double underscores.

export DESTINATIONS__META__ACCESS_TOKEN="..."
export DESTINATIONS__META__AD_ACCOUNT_ID="act_..."

Prefer namespaced configuration over scattering credentials through sync code. It keeps declarations portable across local runs, CI checks, and scheduled operators.