Generates branded, customer-ready quotes and estimates as hosted PDFs in about one second — line items, tax, discounts, a hosted approval page, a QR code and a Stripe payment link. Pay-per-call with x402 in USDC on Base; no account or API key. THIS ENDPOINT (the flagship): POST line items, get back the quote number, totals, a hosted page the customer can approve or decline, a PDF URL, a QR code, a Stripe payment link and an expiration date.

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