Bankless Tempo Mainnet: The Race to Agentic Commerce
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Mar 19, 2026 
Brendan Ryan, Tempo engineer focused on payments infra, joins Georgios Konstantopoulos, a crypto infrastructure builder behind Ethereum tooling. They dig into machine payments, MPP vs x402, and why AI agents may need wallets. Also on the table: paid APIs, agent identity and reputation, wallet security, stablecoin-first design, and how machine-to-machine commerce could reshape the web.
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Why Tempo Centered Mainnet On Agentic Payments
- Tempo launched with agent payments front and center because AI agents now hit a payment bottleneck whenever humans must log in, add cards, and fetch API keys.
- Georgios Konstantopoulos said agents could improve answers by autonomously paying for paywalled content like a New York Times article.
MPP Treats Payments Like Native Agent Auth
- Brendan Ryan framed MPP as a payment form for agents that carries payment auth inside HTTP requests while staying neutral across currencies and payment rails.
- Tempo submitted MPP to the IETF as a formal path for HTTP 402, aiming to make micropayments for APIs and content practical.
MPP Competes By Being Broader Than x402
- Georgios Konstantopoulos argued MPP competes with x402 mainly on performance, developer ergonomics, and broader payment-method support.
- He said MPP already works with Tempo, Stripe methods like Klarna, Visa extensions, and Bitcoin Lightning, and can express x402-style flows more generally.