App API key (Bearer). Server-side only — never ship it to a browser.
OptionalbaseOverride the API origin entirely (e.g. a self-hosted gateway). Takes precedence over sandbox.
OptionalfetchInjectable fetch (tests / custom agents). Defaults to global fetch.
OptionalsandboxTarget the AbsolutePay sandbox (https://sandbox-api.absolutepay.io) instead of production.
Default false → production (https://api.absolutepay.io). Ignored when baseUrl is set.
OptionalsigningRequest signing secret (apisign_…). Required for app keys: every request is HMAC-signed.
OptionaltimeoutPer-request timeout (ms). Default 30000.
Configuration for constructing an AbsolutePay client.