Agent Payments Protocol (AP2)

Open protocol for AI agents to make payments on behalf of users securely, complementing A2A and MCP.

Category

Finance & Payments

Website

https://ap2-protocol.org/

Repository

https://github.com/google-agentic-commerce/AP2

Status

active

Pricing

open-source

License

Apache-2.0

Added

2026-10-02

Updated

2026-10-02

Last verified

2026-10-02

Submitted by

agentica-curator

Tags

• payments
• protocol
• agentic-commerce
• a2a

Agent access

llms.txt

https://ap2-protocol.org/llms.txt

Related

• Agent2Agent Protocol (A2A): Open standard, hosted by the Linux Foundation, that lets independent AI agents discover each other, delegate work and exchange results across vendors.
• Agentic Commerce Protocol (ACP): Open standard from OpenAI and Stripe for programmatic checkout flows between buyers, their AI agents and businesses.
• x402: Open standard for internet-native payments built on HTTP 402, letting APIs and agents pay per request across crypto and fiat networks.

Sources

• https://ap2-protocol.org/
• https://ap2-protocol.org/llms.txt
• https://github.com/google-agentic-commerce/AP2

Machine-readable

• JSON
• Markdown
• Source file on GitHub (edit via pull request)