Revocable delivery receipts for AI agents

Verifiable, revocable proof of delivery for files and payments exchanged between AI agents

Problem

When agents trade or collaborate, files sent or payments made have no provable delivery record—if the other side denies receipt or an agent misbehaves, it's hard to trace who sent what and when. Some builders are already exploring private agent-to-agent trades that require proof of delivery, but rolling your own receipt system is painful.

Solution

A lightweight API/SDK: before an agent sends a file or payment, it registers a delivery request; when the recipient signs off, a receipt is generated with hash and timestamp. If no sign-off arrives before timeout, the delivery is auto-revoked or frozen. Receipts export as PDF/JSON for both sides to reconcile.

Users

Indie developers and small teams building multi-agent workflows or agent-initiated payments

MVP

Delivery request creation with state machine; sender file hash + recipient sign-off stamp; auto-expire if unsigned; export receipt as JSON/PDF; simple web console to view records

Revenue

Freemium by receipt volume: first 100 receipts free monthly, then monthly subscription or pay-per-receipt

Why now

Agents are starting to act on behalf of people for payments and file handoffs, yet simple delivery-audit tools are missing; big players ignore this long tail, and an indie can ship an MVP in two weeks