AP2 Feed Builder Tool
Build and validate AP2 (Agent Payments Protocol) mandates for secure AI-driven payments. This tool helps developers create Intent, Cart, and Payment mandates following Google's AP2 specification for agentic commerce.
What is AP2? The Agent Payments Protocol enables AI agents to securely transact on behalf of users using cryptographically-signed mandates that provide verifiable proof of authorization.
How to Use the AP2 Feed Builder Tool
The AP2 Feed Builder helps developers and technical marketers create valid Agent Payment Protocol (AP2) mandates for use in Agentic Commerce environments. It generates ready-to-deploy JSON structures that define shopping intents, carts, and payment authorisations between human users and AI agents. Below is a simple walkthrough to help you get started.
- Select a mandate type — Intent, Cart, or Payment.
- Fill in each required field such as merchant, items, pricing, or user credentials depending on the mandate.
- Click Generate Mandate to produce a structured JSON payload following AP2 specifications.
- Run Validate JSON to confirm schema accuracy and signature validity.
- Copy or download the output for integration into your AP2 or Agentic Commerce implementation.
Understanding AP2 Mandates
AP2 (Agent Payment Protocol) structures every transaction as a chain of signed mandates that move from user intent to payment execution. Each mandate is a verifiable JSON object that AI agents and payment processors can read, validate, and act upon.
Intent Mandate
Captures the user’s goal and constraints — such as “book a flight under £300” or “order two tickets when available.” This is the starting point of the Agentic Commerce journey, providing context for the AI to act on.
Cart Mandate
Contains the proposed purchase details including item data, pricing, and totals. It represents the negotiation or review stage where the user approves what the AI has sourced.
Payment Mandate
Final authorisation for the transaction. It links to the approved cart, includes a tokenised payment credential, and ensures secure execution within the AP2 network.
AP2 Protocol Features
The Agent Payment Protocol is designed for transparency, security, and interoperability across AI-driven commerce systems. Every mandate is cryptographically signed and traceable from intent to completion.
- Cryptographic Security: Each mandate is digitally signed for tamper-proof authorisation.
- Payment Agnostic: Works with cards, bank transfers, and crypto assets through x402 compatibility.
- Full Audit Trail: Provides a complete chain of evidence from user intent to payment execution.
- Agent-to-Agent Interoperability: Designed to work seamlessly with A2A and MCP protocols for AI commerce ecosystems.
- Enterprise Ready: Includes built-in authentication, authorisation, and compliance layers for regulated use cases.