PayPal invoice and template reads, lifecycle actions, payment and refund records, and QR or number generation. Generated from PayPal's immutable commit-pinned Invoices OpenAPI 2.6. This source-pinned leaf carries 5 of the installed family's 109 catalog operations; the family covers 105 of 115 unique official routes with 10 exact fail-closed exclusions. Bearer authorization and merchant/partner identity remain connection-owned, new reads are uncached and not approval-gated, every mutation requires approval, documented PayPal-Request-Id values are mandatory for supported mutation retries, JSON inputs are bounded, and unsafe response integers remain exact strings. No financial or control-plane object is misrepresented as a task, note, or project Source.