The Tool Desk
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What you need before you can retrieve reviews
Business Profile API access and permission to view a particular profile are separate requirements. Google requires a Google Account, a legitimate business reason, a valid Google Cloud project, and a valid business website to request API access. Google says it reviews access requests within 14 days; that is a review window, not a promise of approval. See the Business Profile API overview and API FAQ.
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- Create a Google Cloud project and configure OAuth credentials for the application.
- Request Business Profile API access for that project. After approval, make sure the project has the APIs your implementation needs enabled.
- Authorize a user who can access the business profiles in scope. A third-party tool can use OAuth authorization, or the business can add the provider as an owner or manager. Project approval does not grant access to arbitrary profiles.
- Enumerate the authorized accounts and locations, then confirm each location is verified before relying on the review-list method.
The API requires OAuth business-management authorization for review retrieval. Check the live method reference for the exact scope requirements when implementing.
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For one location, the REST list endpoint is GET https://mybusiness.googleapis.com/v4/accounts/{accountId}/locations/{locationId}/reviews. It returns reviews for a verified location and supports page size, page token, and ordering controls. Its response includes review details, average rating, total review count, and a next-page token when more results are available. Follow each returned page token until there is no next page; stopping after the first response produces an incomplete backfill. The list method reference describes the request and response fields.
#1 Best Overall
For an initial sync across multiple locations, Google also documents batch review retrieval using POST .../locations:batchGetReviews. The request can specify location names, page size, page token, ordering, and whether to ignore rating-only reviews. The review-data guide also documents fetching a single review by resource name, replying with a PUT to that review’s /reply resource, and deleting a reply with DELETE on the same resource.
Track enough state to resume safely
Choose stored fields and sync state to fit the application. A practical design usually retains stable review identifiers, review content and rating, creation and update times, reply state, and pagination progress. Persist pages so a failed run can resume or restart without duplicating records; use the response fields documented by Google as the source of truth for what is available.
Choose polling or Pub/Sub notifications
Polling is simpler to operate: schedule list or batch requests at a cadence suited to your freshness needs, follow pagination, and manage request volume. Notifications can provide a lower-latency signal, but require more setup and still need API reads to obtain or reconcile review data. Google documents new and updated reviews among supported notification events; it does not establish a delivery-time guarantee.
| Approach | Setup and ownership | Freshness and request pattern | Recovery |
|---|---|---|---|
| Polling and list synchronization | Schedule and operate API requests; no notification subscriber is required. | Freshness depends on polling cadence; requests are controlled by the sync schedule and page count. | Run another paginated sync and reconcile stored records with current API data. |
| Pub/Sub signal plus API reconciliation | Configure a topic, grant publish permission, operate a push or pull subscriber, and link account notification settings. | Notifications signal new or updated reviews; delivery timing is not guaranteed, and API requests remain necessary to fetch current data. | Make notification handling idempotent and retain periodic reconciliation to recover from missed or delayed processing. |
These operational trade-offs follow from the documented mechanisms rather than Google-published performance comparisons. For either design, treat persisted API data—not a notification alone—as the basis for the current review state.
Configure Cloud Pub/Sub notifications
To receive review-event notifications, configure a Cloud Pub/Sub topic and subscription, grant the Business Profile notification service permission to publish, and connect the Business Profile account to the topic. Google’s notification setup guide documents the steps and supported event types.
- Create a Pub/Sub topic and choose a push or pull subscription that your application can process.
- Grant
pubsub.topics.publishon the topic to[email protected]. - Configure the subscriber to validate and process incoming messages.
- Use
accounts.updateNotificationSettingto link the Business Profile account to the topic and select supported notification events, including new and updated reviews. - When a review notification arrives, fetch current review data through the API and persist it idempotently. Keep a periodic reconciliation sync as a recovery path; Google’s documentation does not promise that every notification arrives immediately or without interruption.
Protect the pipeline from quota failures
Google recommends pacing requests evenly. Monitor quota use, avoid unnecessary repeated full backfills, and use a backoff-and-retry policy for HTTP 429 Too Many Requests or gRPC RESOURCE_EXHAUSTED responses. See Google’s quota limits.
If the Business Profile API quota shown for a project is zero, Google says access has not yet been granted and directs applicants to request basic API access rather than a quota increase. The quota page, last updated 2026-08-28 UTC, lists a standard quota of 300 queries per minute for the Notifications API. Those figures describe that API’s quota, not a review-specific per-method allowance; check the current quota page for the limits that apply to the APIs your project uses.
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