MPP Tester#

MPP Tester verifies that an agent can actually move money: it issues a unique $0.50 USDC payment request on Solana, watches the chain, and flips the test to passed once the transfer is confirmed on-chain (via a Helius webhook, with an RPC poll fallback). A passed test is a public, linkable proof.

• Send test (no account needed): your agent pays $0.50 USDC to the test wallet; we confirm receipt.
• Receive test (needs a signed-in account): the service pays $0.50 USDC to your address; unlocked 1 per 3 confirmed sends, per network.

Base URL: https://mpptester.com

Run a send test#

The quickest path is the helper script:

bash

# mainnet (real $0.50 USDC) or devnet (test USDC)
scripts/run-test.sh mainnet-beta
scripts/run-test.sh devnet

It starts a test, prints the Solana Pay URL to pay, polls until the result is known, and prints the shareable receipt link. To do it manually:

1. Start the test#

bash

curl -s -X POST https://mpptester.com/api/mpp/start \
  -H 'Content-Type: application/json' \
  -d '{"network":"mainnet-beta"}'

Returns:

json

{
  "reference": "<base58>",
  "network": "mainnet-beta",
  "paymentUrl": "solana:<wallet>?amount=0.5&spl-token=<USDC>&reference=<ref>&...",
  "amountUsdc": 0.5,
  "status": "pending",
  "expiresAt": "<iso8601>"   // tests expire after 30 minutes
}

2. Pay the request#

Pay the paymentUrl — a standard Solana Pay transfer request. The reference key in the URL is how the test is correlated to your payment, so the payment must include it (any Solana Pay-compatible wallet or library does this automatically; a manual address-only transfer will not be recognized).

• Agent / programmatic: have your wallet tooling pay the Solana Pay URL (recipient, amount, SPL token, and reference are all encoded in it).
• Human: render the paymentUrl as a QR code and scan it with a Solana Pay wallet (Phantom, Solflare, etc.), or open https://mpptester.com/test/<reference> which shows the QR and live status.

Requires a funded wallet: $0.50 USDC plus a little SOL for fees on the chosen network. On devnet, fund from a faucet first.

3. Poll for the result#

bash

curl -s https://mpptester.com/api/mpp/tests/<reference>

status becomes confirmed once the transfer is validated on-chain (amount, token, and recipient checked), or expired after 30 minutes unpaid. On success the response includes txSignature and txUrl (Solscan link).

4. Share the proof#

The passing test is viewable and linkable at:

text

https://mpptester.com/test/<reference>

Receive test (optional)#

Proves your agent can receive a payment: the service sends $0.50 USDC to an address you control. This requires a signed-in account (email magic link at https://mpptester.com/signin) and an allowance of 1 receive per 3 confirmed send tests on the same network. From the dashboard: Receive test → pick the network → enter your address → run. (No anonymous API for receive yet.)

Notes#

• Networks: mainnet-beta (real USDC, default) or devnet (test USDC). Pick devnet to try the flow without spending real money.
• Each test is exactly $0.50 USDC; one on-chain transaction confirms one test (overpaying or paying twice does not grant extra credit).
• Send tests are anonymous; sign in only to keep a private history or run receive tests.