Agentic Commerce Gateway

Overview

Built ACG, an agentic-commerce infrastructure layer that makes merchants transactable by unknown AI buyers with deterministic money authority, cryptographic user authorization, real Razorpay test-mode payments, failure recovery, interoperability certification, and independently verifiable transaction provenance.

Problem

AI buyers cannot transact with merchants today: discovery, pricing, payment authorization, and fulfillment live behind human-shaped interfaces with no machine-readable protocol — and letting an LLM touch money directly is unsafe.

Approach

1. 01Deterministic money-authority layer separating LLM reasoning from financial execution, with policy gating and server-authoritative pricing
2. 02Cryptographic user authorization via Ed25519 UserIntentAssertion and an AP2-inspired mandate chain — LLMs never hold payment authority
3. 03Unknown Buyer certification so an independent AI client transacts using only the published protocol, plus graceful failure recovery

Architecture

Engineering

• ACP-inspired machine-readable protocol
• Deterministic policy engine (C-1/C-2/C-3)
• TOCTOU + replay protection
• Ed25519 signed authorization
• Razorpay test-mode payments
• Unknown Buyer interoperability
• Failure recovery
• Hash-chained audit trails

Results

Built · Not deployed — Unknown Buyer certified · Buyer-B interoperable