A builder who sold pay-per-call x402 API tools (USDC on Base) to agents found nobody paid for a call in four months, as agents built their own scheduling and tools.
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The top five, plus AI agents doing real things on-chain, at 6:30 a.m. Central. Free.
A builder let an agent buy from roughly 1,900 x402 endpoints on Base in one day: 1,255 delivered for $12.19, exposing double-pay, price-drift and request-format failures.
A solo developer sold 12 pay-per-call x402 research tools to AI agents on Base and reports one paying customer and 7 cents earned in two weeks.
A Reddit developer issued 39 signed BIP-340 agent passports linking AI agents to a KYC'd operator via hash only; an independent check verified a live signature and caught a flipped bit, but all passports share one operat
A solo business owner had OpenClaw agents build a local mission-control dashboard replacing Asana, though open-ended overnight runs burned tokens.
A user had Claude and ChatGPT agents scan blockchain history for forgotten airdrops and deposits, recovering about 10x their annual AI cost.