Payment protocols

MPP Tempo

MPP issues a payment challenge through the standard Authorization flow. The client answers with a Payment credential, and AgentPay verifies and charges it before forwarding the request.

URL segment
mpp-tempo
Payment header
Authorization
Availability
Paid plans
Best for
Clients that support MPP credentials and want token payments on Tempo mainnet.

Endpoint URL

https://agent-proxy.alchemy.com/v1/mpp-tempo/{projectId}/{endpointSlug}/{path}

Setup

  1. Enable MPP Tempo in the dashboard.
  2. Enter the recipient wallet address on Tempo mainnet.
  3. Enter the contract address of the token clients pay with.
  4. Set the price per request in token units.
  5. Save the channel and send an unpaid request to confirm the challenge is returned.

Request flow

  1. The client calls the mpp-tempo URL without a payment credential.
  2. AgentPay returns HTTP 402 with an MPP challenge.
  3. The client obtains or creates a matching Payment credential.
  4. The client retries with the credential in the Authorization header.
  5. AgentPay verifies and charges the credential, then forwards the request to your backend.

Notes

  • Prices for MPP channels are entered as decimal token amounts.
  • The recipient and token address must match the network your clients use.
  • Invalid credentials are rejected before your backend receives the request.