nextPageToken

NextPageToken is a common field in paginated APIs. It is an opaque string that represents a position in the result set and is returned by the server when more results remain beyond the current page. Clients use it to request the next page of results. In most APIs, nextPageToken appears in the response payload as a top-level field. If there are no additional results, the field may be absent, null, or an empty string.

To fetch the next page, clients issue a new request including the token as a parameter, commonly named pageToken or nextPageToken. The exact parameter name and location vary by API, but the token is usually treated as opaque: do not try to decode or modify it, and pass it through as provided. The server may also control page size with a separate parameter such as pageSize or maxResults.

Considerations include token expiration, invalidation when the underlying data changes, and rate limits. If the nextPageToken becomes invalid, the client may need to restart the query without a token. The absence of nextPageToken signals the end of the result set. Some APIs support simultaneous or independent cursors and provide separate continuation indicators.

NextPageToken is widely used in cloud services and developer APIs as a standard mechanism to navigate large collections without transferring all items in a single response.