> Markdown version of [/videos/100379-x402-building-pay-per-request-apis-for-ai-agents?t=33](https://www.wearedevelopers.com/videos/100379-x402-building-pay-per-request-apis-for-ai-agents?t=33). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

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# x402: Building Pay-Per-Request APIs for AI Agents

In 1993, HTTP 402 was reserved for future payments. Today, autonomous AI agents finally need it. Learn how the X402 protocol enables sub-cent machine-to-machine transactions.

- **Speakers:** [Brian Whippo](https://www.wearedevelopers.com/@brian-whippo)
- **Event:** World Congress 2026 North America
- **Published:** September 25, 2026
- **Duration:** 28:01
- **URL:** https://www.wearedevelopers.com/videos/100379-x402-building-pay-per-request-apis-for-ai-agents

## Access

Playback and chapters for this video are available with a Free account.

## Related Moments

- [Implementing usage-based pricing through monetization gateways](https://www.wearedevelopers.com/videos/100063-200-ok-payment-settled-resource-delivered) (from "200 OK: Payment settled, resource delivered")
- [Monetizing autonomous agent interactions with HTTP 402 payments](https://www.wearedevelopers.com/videos/1910-web-scraping-ai-agents-and-the-future-of-open-source-kevin-lewis-apify) (from "Web Scraping, AI Agents, and the Future of Open Source - Kevin Lewis (Apify)")
- [Adoption and metrics of the X402 payment protocol](https://www.wearedevelopers.com/videos/100063-200-ok-payment-settled-resource-delivered) (from "200 OK: Payment settled, resource delivered")
- [Introducing the X402 protocol and its core architectural components](https://www.wearedevelopers.com/videos/100232-http-402-teaching-the-web-to-let-agents-pay) (from "HTTP 402: Teaching the Web to Let Agents Pay")
- [Autonomous AI agents and the need for digital payments](https://www.wearedevelopers.com/videos/100063-200-ok-payment-settled-resource-delivered) (from "200 OK: Payment settled, resource delivered")
- [Specific payment requirements for autonomous artificial intelligence agents](https://www.wearedevelopers.com/videos/1381-402-payment-required) (from "402 - Payment Required")

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