Launch your API
Paste your API's URL and set a price. Nucleo answers 402 at /x/your-name, takes USDG or $NUCLEO on Robinhood Chain, forwards paid requests to your API and settles only when your API answers successfully. Earnings go straight to the wallet you name; Nucleo takes no cut. No wallet? Nucleo creates an earnings wallet for you, and you can export or withdraw it any time.
Your hosted APIs
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List a self-hosted API
Already answering 402 with x402 requirements on your own server? Paste the endpoint. Nucleo probes it, the owner reviews it, and it joins the market under your host. Free; callers pay you directly.