Your wallet is the account
Connect it once and sign a message — that is the whole registration. Then one button pays for as many verdicts as you want, in whatever coin is already in it — ETH, SOL, POL, BTC or a stablecoin on Base, Ethereum, Arbitrum, Polygon or Solana — and the transfer is read back from the chain before a single verdict is credited. There is no bridge to cross and no separate gas token to find first.
Base · Ethereum · Arbitrum · Polygon · BNB Smart Chain · Solana · Bitcoin · Tron
ETH · POL · BNB · SOL · BTC · TRX · USDC · USDT · DAI
No wallet connected. A balance appears once you sign in.
No subscription on this wallet. A pack is a number of calls, a subscription is a term; a live subscription is used first, so it never spends a pack you already bought.
Credits come from connecting a project and from referrals. They are spent after the free monthly hundred and before anything you bought, and they cannot be withdrawn.
Appears once you sign in. Both sides are credited only after the person you invited makes their first payment.
reading /health
Pay for verdicts
- connect
- sign in
- pick a network
- send the coin
- credited
Any wallet that speaks EIP-1193 works: MetaMask, Coinbase Wallet, Rabby, Brave. The page asks the browser which wallets are installed and lists them here.
No wallet extension answered. Install MetaMask or Coinbase Wallet in this browser and reload; on a phone, open this page inside the wallet's own browser. WalletConnect is not offered yet — it needs a project key we have not registered, and a fake button is worse than none.
Send exactly
To this address
open in a wallet — on a phone this link hands the address and the amount to the wallet app; on a desktop, copy the two fields above.
The last digits of the amount are how your payment is recognised, so send it to the digit. No memo, no tag, no signature. The service watches the address and credits the verdicts by itself; this page checks every fifteen seconds.
Nothing has been sent. Connecting a wallet moves nothing; only the payment button does.
- What the button does
- It asks the service for a quote — the same HTTP 402 challenge an
agent gets — switches your wallet to Base if it is elsewhere, and asks
the wallet to send exactly the quoted amount of USDC to
0x63bc58472a8449eDd1d1af0B0c03cFc7c832Da2f. You confirm in the wallet. The transaction hash comes back here, the service reads the receipt from a Base node, and the verdicts land on your address. - What you need
- Whatever the coin you picked costs, plus that chain's own fee. Pay in the chain's native coin (ETH, POL, SOL, BTC) and there is nothing else to acquire: the coin you are sending is the coin the fee is paid in. On Base, Polygon and Arbitrum a transfer costs well under a cent. Every price on this page is read from the service when the page loads, and the amount actually sent is the one the service quotes at the moment you press Pay. If the wallet shows a different network, the page asks it to switch; it never sends on the wrong chain.
- What is kept
- Your address, a balance, a subscription term if you bought one, a count of calls this month, and the hashes of your payments — that is the whole record. Signing in stores a session token in this browser only. There is no password to leak because there is none.
- Past the fair-use number
- Nothing is refused and nothing extra is charged: calls run at a slower rate for the rest of the month, then the count starts again. A subscription is a term, not a counter, and asking you to pay again mid-month would make it neither.
- Renewing
- A renewal is another transfer, and the new term starts where the old one ends — paying a week early does not throw that week away. The price stored with your subscription is the price you renew at, even after the published list changes.
- Free, with or without a wallet
- The verdict box on the front page runs the same engine for nobody's money: 20 a day and 100 a month from one network address, with no sign-in. Sign in and the same free 100 a month (20 a day) apply to your wallet on the hosted verdict, and they are spent before any pack you bought.
Spend one
A paid verdict runs the same engine as the free one on the front page, against the same public corpus, and takes one verdict off the balance. It is here so you can see the credit turn into a call without leaving the page.
Needs a connected wallet with at least one verdict on it.
Payments on this wallet
| Transaction | When | USDC | Verdicts |
|---|
Nothing yet. Every payment credited to this address appears here with its Base transaction hash.
For agents: the raw challenge
Nothing above is required of a program. POST
/api/ground without a session answers HTTP 402 with the x402
challenge — amount, recipient, network, nonce, deadline — in the body and,
base64, in the payment-required header. An agent pays the
machine way and never sees a button.
Show the 402 challenge for 100 verdicts
The same challenge, base64, as the header:
not requested yet