Subscribe to get high-signal insights on how modern fintech is built.

opinion

Who's Liable When Your Agent Overpays?

Card networks have no reason code for an AI mistake, and nobody has decided who eats the loss.

engineering

Stripe's Crypto Card Settlement Path

A stablecoin card tap triggers two ledgers that have to agree before the merchant gets paid.

analysis

The Protocol War Nobody Wins

Adyen built a universal translator across three agent commerce protocols, and Stripe co-wrote one of them.

ai & ml

Agentic AML Is Shipping

Three companies shipped AI agents that run real AML investigations, and their production numbers don't measure the same thing.

engineering

Your Own Services Are External

Edge-only validation protects against strangers but not against your own services passing bad data.

analysis

Block Wants Two Banks

Block already runs an FDIC-insured bank, so its application for an uninsured trust bank is about which charter fits which asset class.

fintech

How BaaS Providers Actually Work

BaaS providers rent you a bank charter through an API, and the architecture of that rental determines who holds the risk.

analysis

Cloudflare Gave AI Agents a Wallet

Cloudflare Wallets run on stablecoins and a 29-year-old HTTP status code because card networks can't price a sub-cent transaction.

analysis

Visa's Stablecoin Settlement Hit $20 Billion

Visa settles $20 billion a year in USDC across nine blockchains, and it's already using the onchain data to underwrite working capital loans.

engineering

Five Clocks in Every Transaction

A single payment carries five timestamps that each answer a different question, and confusing any two is how you fail an audit.

analysis

X Money Launched at 6% Yield

X Money offers 6% when the federal funds rate is 3.75% to 4%, and nobody has explained where the extra 200 basis points come from.