Tempo MPP Mainnet Launch — Stripe + Paradigm Agent Payment Settlement Layer
Signal
Tempo MPP launched on mainnet on or around March 18, 2026. The protocol is co-developed by Stripe and Paradigm. It provides a permissioned settlement layer designed for agent-native payment flows: micropayment streaming, card specification extensions, and stablecoin settlement.
Verified facts
- Tempo mainnet is live. Protocol designation: MPP (Multi-Party Payment).
- Governance: permissioned phase. Permissionless roadmap: unstated.
- Settlement: supports USDC (Circle) and card-rail bridging via MPP card extensions.
- Validator model: initial anchor validators drawn from institutional partners.
Operational reading
- Tempo is the settlement layer beneath Stripe's agent payment stack.
- The permissioned validator set creates an institutional default rail — network composition determines geopolitical alignment.
- MPP card extensions bridge the Tempo settlement layer to legacy card infrastructure, enabling routing through existing card acceptance networks.
Convergence signal
Mainnet launch closes the "theoretical" gap in agent payment settlement. ACP (Stripe + OpenAI) handles commerce protocol layer; Tempo handles the settlement layer below it. Two-layer stack (protocol + settlement) now both live.
Action posture
- Track validator composition as the primary signal. Each new validator is a geopolitical and commercial alignment data point.
- Monitor permissionless roadmap announcement — transition from permissioned to open = structural shift in coalition control.