Analyze accounts receivable aging from an invoice CSV or JSON export. $1 USDC on Base per call. Takes up to 1000 open invoices (QuickBooks, Xero, FreshBooks, Wave, Stripe or custom). Returns an A-F health grade, 0-100 score, aging buckets, overdue %, DSO and a collection priority list. Don't use this for a single invoice; use /v1/reminder-draft or /v1/late-fee.