Nanopayments support prices below the practical minimum of conventional card systems. They can fund one API call, data item, message, model response, or other small resource when transaction fees, settlement speed, and automation make the payment economical.
A small amount does not eliminate risk because automated agents can repeat transactions rapidly. Systems need cumulative budgets, rate limits, recipient controls, duplicate protection, transparent unit pricing, and records that reveal total spending over time.
ELI5
A nanopayment is a payment so small that it may cover only one tiny digital action. Ordinary card systems often have fees and checkout steps that make such amounts impractical, while programmable systems can process them automatically.
For example, an agent might pay one hundredth of a cent for one data lookup. Each payment is tiny, but millions of automatic requests can still become expensive, so the wallet needs a total budget and rate limits.
