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MPP Protocol

Technical breakdown of the Machine Payments Protocol — HTTP 402 payment flows, charge/session/subscription intents, request-body binding, idempotency, and IETF standardization progress.

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Tempo Mainnet: Machine Payments Protocol for AI Agents

Tempo mainnet ships the Machine Payments Protocol, replacing API key billing with HTTP 402 flows for AI agents. The technical breakdown for builder teams.

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Terminal window showing an HTTP 402 payment challenge and Authorization: Payment credential exchange, with abstract payment flow lines connecting to API service nodes — illustrating the Machine Payments Protocol request cycle.

Web3 Builder9 min read

Tempo Mainnet: Machine Payments Protocol for AI Agents

Tempo mainnet ships the Machine Payments Protocol, replacing API key billing with HTTP 402 flows for AI agents. The technical breakdown for builder teams.

Marcus Bishop

Mar 28, 2026