Query the Google Ads API via curl + jq. Two credentials plus one context header:

$GOOGLE_ADS_TOKEN — the user's OAuth bearer (adwords scope) → Authorization: Bearer $GOOGLE_ADS_TOKEN
$GOOGLE_ADS_DEVELOPER_TOKEN — the platform's developer token (injected server-side) → header developer-token: $GOOGLE_ADS_DEVELOPER_TOKEN
login-customer-id — only for manager (MCC) scoped calls: the manager id the request runs under, or $GOOGLE_ADS_LOGIN_CUSTOMER_ID if set (digits only, no dashes). Not needed by customers:listAccessibleCustomers.

API version: the base is https://googleads.googleapis.com/<vNN>. Google ships a new vNN every ~4 months and retires old ones, so a hardcoded version eventually stops working. The example uses v25 (supported as of 2026-07). If every call 404s, the version is unavailable — either retired or not yet released. Probe customers:listAccessibleCustomers: a supported version answers 401/200, an unavailable one 404. Step down one version at a time from the example, and check Google's supported-versions table before assuming a newer vNN exists.

google-ads