World Congress 2026 North America • Sep 25, 2026 • Session details

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.

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

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Matching moments

1:17 min

Implementing usage-based pricing through monetization gateways

Brian Whippo

Brian Whippo · World Congress 2026 Europe

10:56 min

Monetizing autonomous agent interactions with HTTP 402 payments

Coffee With Developers

1:50 min

Adoption and metrics of the X402 payment protocol

Brian Whippo

Brian Whippo · World Congress 2026 Europe

58 sec

Introducing the X402 protocol and its core architectural components

Ed Marquez

Ed Marquez · World Congress 2026 Europe

53 sec

Autonomous AI agents and the need for digital payments

Brian Whippo

Brian Whippo · World Congress 2026 Europe

2:42 min

Specific payment requirements for autonomous artificial intelligence agents

Brian Whippo

Brian Whippo · World Congress 2025

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