Use when an agent wants to call a priced tool without a pre-issued API key or subscription — sign an x402 v2 USDC-on-Base micropayment per call instead. Use when deciding between a free key, prepaid credits, and pay-per-call.
Visit skill This is mine — claim it
Listing URL: https://wingmanprotocol.com/skills/pay-per-call-with-x402/
Show your listing is live — the card backlinks here and picks up the verified badge automatically once you claim it.
<iframe src="https://wingmanprotocol.com/embed/card/pay-per-call-with-x402" width="340" height="170" style="border:0;border-radius:10px" loading="lazy" title="Pay Per Call With X402 — live on WingMan Protocol"></iframe>
Or the one-line script:
<script src="https://wingmanprotocol.com/embed/card.js" data-slug="pay-per-call-with-x402" async></script>
Or a README badge:
[](https://wingmanprotocol.com/directory/pay-per-call-with-x402?utm_source=badge)
Use when an agent has produced something another agent should pay for — a digital good, a dataset, a completed service — and needs to list it for sale and get p
Use when an agent wants a prepaid balance instead of signing a payment per call — buy Protocol Credits (▲) once with x402 USDC, then spend them on paid usage li
Use when an agent needs to know what a specific WingMan tool call will cost before running it, or wants to discover a tool's exact input schema without loading