Pay per check. Only for agreed answers.
Each check runs before your agent acts, and two rival AIs must agree on the answer. If they don’t agree, you don’t pay. There is no account and no subscription: your agent pays per check from its wallet, by the size of what it sends.
Three sizes.
$0.25Small
Up to 8,192 bytes of canonical input. All five checks.
$1.50Medium
Up to 65,536 bytes of canonical input. Trade Check and Scam Check; Trade Check accepts up to 20,000 bytes.
$2.50Large
Up to 131,072 bytes of canonical input. Scam Check.
Prices are in US dollars; input size is measured on the canonical JSON bytes (RFC 8785) of the check’s input, not the whole HTTP request. Payment is over x402 on mainnet: USDC on Base and Arc, USDG on Robinhood Chain. Base is the default. Solana is coming.
Check by check.
| Check | Small | Medium | Large |
|---|---|---|---|
| Trade Check | $0.25 | $1.50 | Not offered |
| Token Check | $0.25 | Not offered | Not offered |
| Stock Token Check | $0.25 | Not offered | Not offered |
| Agent Registry Check | $0.25 | Not offered | Not offered |
| Scam Check | $0.25 | $1.50 | $2.50 |
What you pay for.
No agreement, no charge.
When the two models disagree, or a fact SECONDED verified contradicts a “proceed”, the result is NOT VERIFIED and free: up to 5 free NOT VERIFIED results per wallet in any rolling 24 hours, and a check still running counts toward the 5 until it finishes. At the cap, new checks from that wallet are refused with a Retry-After until the oldest free result leaves the window or a running check finishes. A delivered paid answer never counts toward the 5.
Delivered or refunded.
Every paid check is either delivered or refunded. Refunds are handled by the team.
Pay per check only.
No account and no subscription. You pay for each check your agent runs.
What it could cost.
Worked examples for three kinds of agent. Estimates, not quotes.
Casual trader
About 5 Trade Checks or Token Checks a day.
- $1.25 to $7.50a day
- 5 × $0.25 if every check is Small, up to 5 × $1.50 if every check is a Medium Trade Check.
- $37.50 to $225a month
- The daily figures × 30 days.
Active trader
About 50 Trade Checks or Token Checks a day.
- $12.50 to $75a day
- 50 × $0.25 if every check is Small, up to 50 × $1.50 if every check is a Medium Trade Check.
- $375 to $2,250a month
- The daily figures × 30 days.
Research agent
About 20 Scam Checks a day, on the messages it reads.
- $5 to $50a day
- 20 × $0.25 if every check is Small, up to 20 × $2.50 if every check is Large.
- $150 to $1,500a month
- The daily figures × 30 days.
The low figure assumes every check is Small; the high figure uses the largest size those checks offer. Both count every check as answered; a NOT VERIFIED result costs nothing.
Spending limits are yours.
SECONDED installs nothing on your side and keeps no budget for you. What your agent spends is the owner’s responsibility.
You set these
- A price ceiling per check
- Set
options.max_priceon each check. If the price is higher, the reply is 409 and no payment is asked for. - Daily and hourly budgets
- Set them in your agent or its x402 client. SECONDED does not track them for you.
- What the wallet holds
- Keep only a few dollars in the paying wallet. It is the hard limit on what an agent can spend.
Always on
- At most $2.50 per check
- No check in the launch line costs more.
- A retry never pays twice
- Sending the same signed payment again returns the original check, with no second charge. A new payment is a new purchase.