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AI agents making on-chain payments is no longer a thought experiment
A small but growing category of production systems now uses stablecoin rails for machine-to-machine payments. The design choices are worth understanding.

What is actually running
- Data marketplaces where AI agents settle per-query fees automatically
- Compute marketplaces where inference jobs are paid on completion
- Content licensing flows where an AI system pays a rights holder inline with usage
Why crypto rails and not cards

Programmable settlement, sub-cent transaction cost at scale, and no chargeback risk in a machine-signed context. None of those are unique advantages in every use case, but taken together they explain the pattern of adoption.
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