MPP
Apps

Built with MPP TestKit

Interactive demos showing the HTTP 402 payment protocol in action - from both the client and server side.

AUTONβ
Open app

An AI agent that pays for its own API calls autonomously - no human in the loop, no wallet pop-ups. Demonstrates end-to-end HTTP 402 from the agent's perspective.

Flow
  1. 1.Agent receives a task requiring a paid API call
  2. 2.Automatically airdrops SOL on devnet, no setup needed
  3. 3.Pays the 402 challenge on-chain and retries with receipt
  4. 4.Returns the result - agent paid its own way
Stack
Next.jsTypeScript SDKSolana devnetHTTP 402
Launch Auton
MONETIZEβ
Open app

Watch a server earn SOL in real time. Drop in one middleware call and any endpoint becomes pay-per-request - no Stripe, no database, no subscriptions.

Flow
  1. 1.Server returns 402 with a Payment-Request header
  2. 2.Client SDK pays on-chain and retries automatically
  3. 3.Server verifies the transaction and serves the response
  4. 4.Live earnings counter tracks SOL earned per request
Stack
Next.jsTypeScript SDKSSE streamingSolana devnet
Launch Monetize

All demos run on Solana devnet - no real funds needed. Wallets are generated and funded automatically via airdrop. View source on GitHub.