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A weekly newsletter on AI: the technical details, what people are building with it, and how I use AI as a developer.
Everything I write.
AI agents, smart contracts, and whatever else I'm building. The AI posts reach the newsletter first.
Turnstile · overview10 min Turnstile: a market where AI agents pay per query
Agents that find a data seller through ENS, read its price on chain, pay per query over x402 and spend inside a mandate they cannot widen. Overview of the nine-part series.
Nov 12, 202615 min Sente: hand your trading strategy to an AI agent that can't break its limits
A trading app for Kuru spot and Perpl perps on Monad, where an agent trades your strategy while you're away, wakes only when the market gives it a reason, and shows you every thought behind its trades.
Turnstile · part 712 min Spending mandates for agents: the wallet can never raise its own limit
How to give agents a money cap they cannot touch: a Privy server wallet and a spend policy owned by a separate 2-of-2 key quorum.
Turnstile · part 315 min One payment interface, four chains
A four-method PaymentRail interface, a registry that turns rails into accepts[], a test that fails the build when a chain name leaks into the service, two Base interop surprises, and selling through a gateway that collects the payment for you.
Turnstile · part 119 min x402 on Hedera: what a paid HTTP request is made of
A seven-cent API call settled through Blocky402: the 402 challenge, a transfer the buyer signs but cannot send, a facilitator that pays the gas, a replay guard, and a receipt anyone can read back.
Turnstile series
Building a paid lane for onchain data agents: a seller agent that answers Uniswap pool questions over x402, built over ETHOnline 2026. Payments, discovery, identity, spending limits and the data behind the answer, one post each.