Agent payments on Tempo over MPP (USDC.e)

vet402 measures agent payments on Tempo over MPP (Machine Payments Protocol).

The pinned settlement asset on Tempo is USDC.e.

1.This read

Delivered counts settled purchases whose paid request answered 2xx. The row is l1.byChain for Tempo. CAIP-2 eip155:4217.

Paid attempts

333

Settled

302

Delivered

86

178 settled purchases on this chain are held as inconclusive. The methodology says why a 4xx is held.

2.How a purchase is tied to its settlement

CAIP-2 eip155:4217. The purchase is tied to its settlement by the indexed memo of a TIP-20 TransferWithMemo. The re-read matches that memo.

3.Where to read on

/api/v1/observatory/state (CC BY 4.0) is the source. Definitions are in the methodology. How an agent pays, including USDC.e, is How AI agents pay with stablecoins. How to check a seller before paying is on its own page. A longer note on the protocol is What is x402.