---
title: "AP2 | AP2 agent payments protocol A2A extension | Agent-Ready Check"
description: "AP2 carries payment mandates over the A2A protocol, declaring which roles an agent plays in a transaction. Pass criteria: The A2A Agent Card advertises an AP2 extension with role information."
locale: en
canonical: https://agent-ready.t0ols.com/checks/ap2/
---

# AP2

> Category: Commerce

AP2 carries payment mandates over the A2A protocol, declaring which roles an agent plays in a transaction.

## Why it matters

Roles matter: shopper, merchant, credentials provider and payment processor have very different permissions.

## Pass criteria

The A2A Agent Card advertises an AP2 extension with role information.

## How to implement it

Goal: Advertise Agent Payments Protocol support through your A2A Agent Card

The A2A Agent Card advertises an AP2 extension with role information.

The step-by-step implementation prompt is part of the paid tier. The free layer gives you the diagnosis, the evidence and the specification links.

Specifications: https://ap2-protocol.org/, https://a2a-protocol.org/
Implementation notes: https://agent-ready.t0ols.com/.well-known/agent-skills/ap2/SKILL.md