Tempo mainnet ships with Stripe-coauthored Machine Payments Protocol
A payments chain plus an HTTP 402 protocol that is rail-agnostic across cards and stablecoins.
company
Mastercard
Card network named by Tempo as a mainnet/MPP partner. Partnership language is not volume proof.
Machine: /v1/intelligence/entity/mastercard · Graph: /v1/graph/entities/mastercard
Graph relationships
- evt-linux-foundation-x402-operational-2026-07-14
- evt-mastercard-agentic-payments
- evt-tempo-mainnet-mpp-2026-03-18
Timeline
Mastercard is named as a Tempo/MPP design partner for agent payments
Card-network participation in MPP is a distribution signal, not a live volume print.
Linux Foundation announces operational launch of the x402 Foundation
Forty member organisations listed. Stewardship is now described as active.
Visa, Mastercard and Ant International begin Know-Your-Agent interoperability work
The card networks and Ant are collaborating on shared agent-identity principles. This is a framework effort, not a live cross-network standard.
Machine Economy Daily — 10 September 2026
Agents can now query a public x402 catalog; card networks started shared agent-identity work. Listing count is still not demand.