Agent Payments Protocol (AP2)
Open protocol from Google for secure agent-led payments across traditional and crypto rails, with a crypto-native x402 extension built with Coinbase, Ethereum Foundation, and MetaMask.
Last release Apr 28, 2026 · Last commit Apr 24, 2026 · ★ 2,937
Overview
AP2 (Agent Payments Protocol) is an open protocol announced by Google for initiating and settling agent-led payments, using cryptographically signed Verifiable Credential 'Mandates' to create verifiable, user-authorized transaction trails. It is an extension to the Agent2Agent (A2A) protocol and supports both traditional rails and crypto/stablecoins. The crypto-native path is the A2A x402 extension, developed by Google in collaboration with Coinbase, the Ethereum Foundation, and MetaMask.
Details
- Chains
- Ethereum, Base, Multichain
- Agent types
- Payment Protocol, Commerce Agent
- Open source
- Yes
- Pricing
- Free (open protocol)
- Last checked
- 2026-06-10
Marketplace Signals
No marketplace signals recorded for this resource yet.
Verification status reflects evidence reviewed by Sato Hub. Self-reported claims are never presented as verified.
Recent Activity
All news →Releases and posts from Agent Payments Protocol (AP2), pulled from its GitHub and X.
AP2 v0.2.0
This is the second release of AP2. It focuses on providing Human Not Present flows.
AP2 v0.1.0
0.1.0 (2025-09-16) Features Create Agent Payments Protocol (AP2) ( e66fc0b )
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x402
EarlyOpen payment protocol enabling agents and apps to pay for APIs over HTTP using stablecoins.
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