Fees & limits
The fee
Section titled “The fee”There is exactly one fee, and the buyer pays it — added on top of your list price at payment time, disclosed to the agent in the 402 terms before it pays:
| What’s being sold | Fee the buyer pays on top |
|---|---|
| API calls, bundles, passes | +3% |
| Site crawl tolls & site passes | +11.1% |
You keep 100% of your list price. If you price a call at $0.01, the agent pays $0.0103 and $0.01 lands with you. The split happens on-chain in the same transaction that settles the payment — see Payouts.
Your fee rate is locked by your on-chain splitter, and it can only ever go down — an existing seller’s rate can never be raised. (We don’t promise “forever” about anything; we promise the direction.)
Free to use
Section titled “Free to use”- $0 setup, no subscription, no monthly minimum, no listing fee.
- The core product is never paywalled. Superspice earns only when you earn — via the buyer-paid fee above.
The $1 first payment for sub-$1 prices
Section titled “The $1 first payment for sub-$1 prices”On-chain payments have a practical minimum size. If your per-call price is under $1, an agent’s first payment is a $1 top-up that includes calls at your exact rate — e.g. at $0.005 per call, the first payment is $1.00 for 200 calls, drawn down one call at a time. After that, the agent draws against its prepaid balance with no further on-chain payments until the balance runs out.
This is always disclosed to the agent in the 402 terms before it pays — nothing is retroactive, and the effective per-call price is exactly your list price.
What buyers need (and don’t)
Section titled “What buyers need (and don’t)”- Agents pay in USDC on Base and sign payments from their own wallet. No account, no API key, no card, no invoice.
- No chargebacks exist in the rail: payment is cryptographic and final, so there is structurally nothing to dispute — and the buyer is protected the other way by delivery-gated settlement (see the FAQ).