# Machine Payment Proposals (MPP)

Date: 2026-04-03

These are the current human-readable machine payment proposal drafts published from this repository.

## Drafts

- [Escrow intent for HTTP Payment Authentication](./mpp/draft-payment-intent-escrow-00.md)
- [PoB escrow intent for HTTP Payment Authentication](./mpp/draft-pob-escrow-00.md)
- [Card escrow intent draft](./mpp/draft-card-escrow-00.md)

## Reading Order

1. Start with the escrow intent draft for the method-agnostic payment flow.
2. Read the PoB escrow draft for the PoB-specific smart-contract binding.
3. Use the card escrow draft as a comparison point for non-chain payment methods.