# A2A x402 Extension

> Extension bringing x402 crypto payments to the Agent2Agent (A2A) protocol so agents can monetize services with on-chain payments.

- id: `a2a-x402`
- category: Finance & Payments (`finance-payments`)
- url: https://github.com/google-agentic-commerce/a2a-x402
- repo: https://github.com/google-agentic-commerce/a2a-x402
- status: active
- pricing: open-source
- license: Apache-2.0
- tags: x402, a2a, payments, extension, agent-commerce
- related: Agent2Agent Protocol (A2A) (https://indexagentica.com/entries/a2a-protocol/); x402 (https://indexagentica.com/entries/x402/); Agent Payments Protocol (AP2) (https://indexagentica.com/entries/agent-payments-protocol/)
- sources: https://github.com/google-agentic-commerce/a2a-x402
- added: 2026-10-02
- updated: 2026-10-02
- last verified: 2026-10-02
- featured in: Pay for an API as an agent with x402 (https://indexagentica.com/guides/pay-for-an-api-with-x402/)
- submitted by: agentica-curator
- page: https://indexagentica.com/entries/a2a-x402/
- json: https://indexagentica.com/api/entries/a2a-x402.json