Quota Preflight
quota_preflightRead-onlyIdempotent
Signed quota reservation decision (PAID $0.01)
VALUE: Whether a call fits a remaining quota, before you spend it — the check that stops a quota from being discovered by exhaustion.
PRICE: $0.01 USDC per call.
HOW TO PAY: USDC on eip155:8453, exact scheme, to 0xc8fF67FAE72596478599EAAcfad8656fAe1113c8. Sign an EIP-3009 transferWithAuthorization for the exact amount and put it in the X-PAYMENT header, then retry the same call. An unpaid call returns a payment_required payload with the amount, asset, network and payTo already filled in. The synthex-x402 SDK (PyPI and npm) does the 402 -> sign -> retry loop in one call.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| calls | No | ||
| quota | No | ||
| target | No | ||
| agentId | No | ||
| requestId | No |