Hey, it’s Marc,

The entire $10T global commerce stack was engineered for humans with credit and debit cards. Apple and Google have been extracting a 30% tax on the internet simply by owning the checkout screen for digital goods.

But, the next generation of consumers are not going to use screens or interfaces at all. We just entered the “Silent Economic Singularity.” AI agents now observe, reason, and crucially spend money autonomously. And, Stripe is building for them, combining stablecoins with AI agents with the Machine Payment Protocol. [RELEASE]

The Signal: The traditional App Store tollbooth is collapsing. The execution layer of the internet is shifting from human interfaces to machine-to-machine APIs. Stripe’s MPP is not the only one framework for A2A (agent to agent) payments. OpenAI and Google have been building separate frameworks: ACP and UCP simultaneously.

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What happened

On March 18, 2026, Stripe and Tempo co-released the Machine Payments Protocol, an open specification for machine-to-machine payments. Simultaneously, Tempo launched its mainnet, a purpose-built blockchain backed by $500 million from Paradigm, Thrive Capital, and other investors at a $5 billion valuation. [RELEASE]

It revives the dormant HTTP 402 “Payment Required” code: an agent requests a resource, receives a payment prompt, pays cryptographically, and unlocks access in milliseconds.