I built a pay-per-call image processing API that AI agents can pay for with USDC

I keep experimenting with the x402 protocol — HTTP 402 payment-gated APIs where AI agents pay per call in USDC on Base, no accounts or API keys. Yesterday it was QR codes; today it's image processing. Image Toolkit does four operations, 0.01 USDC each: resize — scale to width/height (aspect preserved if you pass only one) convert — PNG / JPEG /... Weiterlesen