Nansen has just deployed something interesting for crypto data junkies. They launched a pay-per-call model based on the x402 protocol, which means you can now access their on-chain data without a traditional subscription.

Specifically, here’s how it works: you send a request to view wallet flows, fund movements, or smart money signals, and you pay directly in USDC for each call. No API key needed, no prior approval, just on-demand payment. The system runs on the PayAI infrastructure and uses the HTTP 402 mechanism to automate the entire request-billing-payment-return process.

The rates are quite affordable: about $0.01 for a standard request and around $0.05 if you want advanced signals. And the good news is that Nansen already supports payments on Base and Solana, making things smoother for users of those ecosystems.

What’s cool about this approach is that AI agents can also make calls and payments autonomously. It’s a fairly innovative model to democratize access to blockchain data without long-term commitments. We’ll see if other platforms follow suit.