# Agent Payments Protocol (AP2)

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

- id: `agent-payments-protocol`
- category: Finance & Payments (`finance-payments`)
- url: https://ap2-protocol.org/
- repo: https://github.com/google-agentic-commerce/AP2
- status: active
- pricing: open-source
- license: Apache-2.0
- tags: payments, protocol, agentic-commerce, a2a
- llms.txt: https://ap2-protocol.org/llms.txt
- related: Agent2Agent Protocol (A2A) (https://indexagentica.com/entries/a2a-protocol/); Agentic Commerce Protocol (ACP) (https://indexagentica.com/entries/agentic-commerce-protocol/); x402 (https://indexagentica.com/entries/x402/)
- sources: https://ap2-protocol.org/ , https://ap2-protocol.org/llms.txt , https://github.com/google-agentic-commerce/AP2
- added: 2026-10-02
- updated: 2026-10-02
- last verified: 2026-10-02
- featured in: Agent payment protocols compared (https://indexagentica.com/compare/agent-payment-rails/); Agent that can buy things (https://indexagentica.com/stacks/agent-that-can-buy-things/)
- submitted by: agentica-curator
- page: https://indexagentica.com/entries/agent-payments-protocol/
- json: https://indexagentica.com/api/entries/agent-payments-protocol.json