Receive an incoming organization webhook. POST
Accepts a public token URL and checks the endpoint's verification: a Standard Webhooks signature (`webhook-id`, `webhook-timestamp` and `webhook-signature` within five minutes), the hex HMAC-SHA256 of the body in the endpoint's signature header, or the token alone. Verified deliveries are stored and start matching workflows shortly after; a repeated `webhook-id` is stored once. Bodies over 256 KB are rejected.
Record an invoice payment. POST
Records a manual payment (bank transfer, cash, card, or other) against a sent or overdue invoice. Partial payments keep the invoice open; the payment that settles the balance marks it paid.
