Tuesday, March 17, What's MiroFish All About?

AWS and startups unlock USDC micropayments for AI agents — practical reference code, Base settlement, and a swarm engine that runs millions of interactions.

Key Takeaways

AWS and Coinbase revived HTTP 402 micropayments: AWS published architecture, three production reference implementations and guides; servers return 402 with a payment spec enabling USDC sub‑2s settlement.
Agents pay per use with no API keys or vendor contracts; every transaction is recorded on‑chain for auditability and settlement rails are built on Base for fast, auditable payments.
MirrorFish/OASIS swarm engine — built in ten days with AI assistance by an undergraduate — creates thousands of agents, supports up to 1,000,000 interactions, and runs simulated social forecasts.
Users can query agents mid‑run and inject variables to test counterfactuals; a report agent analyzes outcomes and produces structured forecasts for decision testing.
Finance, trading data, and compliance are primary use cases; agents only pay for what they use, and McKinsey projects $3–5 trillion in agent‑mediated commerce by 2030.
Market context: Bitcoin ETFs posted six consecutive days of net inflows (>$56B cumulative); ETH ~ $2.3k; macro headlines include Fed rate expectations and related market moves.

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