Get the full billing picture for the period: every account with its plan, charges, usage and overage, a summary with the change from the month before, and an overage breakdown. Use this for a billing page or reconciliation. Defaults to the current month; send year and month for another period.

Prerequisites: a Partner bearer token. Optional: year and month (default: the current month).

Authentication: Partner token. It covers the accounts directly under your own partner; any other token gets 403.

Rate limit: 120 requests per minute, counted per user (the token’s user).