Payments · protocol · Google, with the core specification donated to the FIDO Alliance

Agent Payments Protocol (AP2)

The Agent Payments Protocol describes what a user has authorized an agent to buy and how to pay, as signed mandates (verifiable digital credentials). It is available as an extension to A2A and UCP, and Google has donated its core specification to the FIDO Alliance.

github.com/google-agentic-comme...The standard
Google, with the core specification donated to the FIDO AllianceGoverning body
5tagged with it

Also known as AP2.

Providers that carry Agent Payments Protocol (AP2) 5

These providers' own APIs.json profiles carry Agent Payments Protocol (AP2) as a tag — the provider's statement that the standard is part of what it does. APIs.io has not verified the implementation on this page; the de facto profiles on this site are where that measurement exists. Ordered by Kin Score.

MandateShieldexemplar · 68.9Googleexemplar · 67.3HORIZON SHIELDstrong · 54.5Allowancedeveloping · 49.6Merchant-0thin · 37.0

Read from the API Evangelist standards directory, facts verified 2026-10-13. Provider links come from the catalog's own identity tags and are rebuilt nightly. If this page is wrong about a standard or a provider, say so.