onlineo.live
← Work

x402

Micro-products an agent can pay for

Client

Online Olive

Year

2026

Discipline

Backend, Payments, Agents

Status

live

Three endpoints priced between ten cents and a dollar, payable over the x402 protocol. A test of whether an autonomous agent will buy a small useful thing without a human in the loop — and whether the margin survives it.

Visit x402.onlineo.live↗

Built with

  • Next.js
  • x402
  • DynamoDB
  • Anthropic API

The interesting part

  • 01

    Domain availability checks at $0.10, thumbnail rendering at $0.25, an LLM-backed name shortlist at $1.00.

  • 02

    The product mix is deliberately weighted so the two cheap endpoints never touch a language model.

  • 03

    The shortlist endpoint only calls the LLM after payment clears, which is the entire pricing argument.

  • 04

    Marginal cost per product is written down in the repo next to the price, and usage metrics are queryable.

The real thing

x402.onlineo.live
x402 in the browser