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AP2 — Agent Payments Protocol

ProtocolSpecification Published specification

Agent Payments Protocol: signed mandates that prove a customer authorized an agent's purchase. Created by Google (Sep 2025); donated to the FIDO Alliance with v0.2 on 28 Apr 2026.

Protocol profile

Connects
Agent ↔ payment authority
Maturity
v0.2 · Google → FIDO Alliance (Apr 2026)
Distinction
Proof of purchasing intent, signed mandates and payment records.
Specification
Primary source ↗

Documented relationships · 5

← AP2 support (announced) Google AI Mode ShoppingDemonstrated / pilot Documented preview

Google says AP2 support comes to its agentic shopping starting with Gemini Spark (announced at I/O, May 2026).

Evidence ↗
← Compatible payment authority UCP — Universal Commerce ProtocolSpecification

UCP is designed to work with AP2 mandates. · Current

Evidence ↗
← Steward since Apr 2026 FIDO AllianceDesign participation Standard stewardship

The FIDO Alliance stewards AP2 standardization.

Evidence ↗
← Created; donated to the FIDO Alliance GoogleDesign participation Standard stewardship

Google created AP2 (Sep 2025) and donated it to the FIDO Alliance with v0.2 (28 Apr 2026).

Evidence ↗
← AP2 launch partner PayPalDesign participation

PayPal is named as an AP2 launch partner.

Evidence ↗

Provided by

FIDO AllianceCompanyVendor documented