# HTTP 402 & x402: How AI Agents Pay for Content

> HTTP 402 and the x402 Protocol for AI Agent Payments The HTTP 402 “Payment Required” status code has long been a reserved but unused part of the HTTP/1.1 specification. In…

- **Canonical:** https://agentflare.org/research/http-402-x402-how-ai-agents-pay-for-content.html
- **Updated:** 2026-06-23
- **Category:** research
- **Full structured data:** `/research/http-402-x402-how-ai-agents-pay-for-content.data.json` — $0.02 via AISA HTTP 402 (https://esa.aisa.one/api/v1/access/verify; agents set crawlerAutoPrice=true)

## Key data

- **Topic:** agent-economy
- **Sources:** 10
- **Updated:** 2026-06-23

# HTTP 402 and the x402 Protocol for AI Agent Payments

_…full analysis and the complete dataset are available to agents for $0.02 — fetch `/research/http-402-x402-how-ai-agents-pay-for-content.data.json` (HTTP 402)._

## Sources

1. [https://www.digitalapplied.com/blog/x402-payment-protocol-ai-agents-pay-coinbase-cloudflare](https://www.digitalapplied.com/blog/x402-payment-protocol-ai-agents-pay-coinbase-cloudflare)
2. [https://eco.com/support/en/articles/12328618-x402-protocol-explained-how-ai-agents-pay-onchain](https://eco.com/support/en/articles/12328618-x402-protocol-explained-how-ai-agents-pay-onchain)
3. [https://blog.nodit.io/ai-agents-that-pay-for-themselves-how-the-x402-protocol-works/](https://blog.nodit.io/ai-agents-that-pay-for-themselves-how-the-x402-protocol-works/)
4. [https://nevermined.ai/blog/x402-ai-agent-billing](https://nevermined.ai/blog/x402-ai-agent-billing)
5. [https://www.fireblocks.com/blog/how-x402-and-dynamic-enable-internet-native-payments-for-ai-and-apis](https://www.fireblocks.com/blog/how-x402-and-dynamic-enable-internet-native-payments-for-ai-and-apis)
6. [https://aws.amazon.com/blogs/industries/x402-and-agentic-commerce-redefining-autonomous-payments-in-financial-services/](https://aws.amazon.com/blogs/industries/x402-and-agentic-commerce-redefining-autonomous-payments-in-financial-services/)
7. [https://www.youtube.com/watch?v=UQJl8jCDMlo](https://www.youtube.com/watch?v=UQJl8jCDMlo)
8. [https://solana.com/x402/what-is-x402](https://solana.com/x402/what-is-x402)
9. [AI Agents and Autonomous Payments: A Comparative Study of x402 and AP2 Protocols | by Jung-Hua Liu | Medium](https://medium.com/@gwrx2005/ai-agents-and-autonomous-payments-a-comparative-study-of-x402-and-ap2-protocols-e71b572d9838)
10. [AI Agents That Pay for Themselves: How the x402 Protocol Works](https://blog.nodit.io/ai-agents-that-pay-for-themselves-how-the-x402-protocol-works)

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