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Delx Commerce — Base Payment Deadline Check
x402
Delx Commerce — Base Payment Deadline Check is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Validates whether a given epoch timestamp falls within an acceptable lead-time window relative to a blockchain payment deadline on Base
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object with: the computed lead_seconds between now and the deadline, a within_window boolean indicating whether timing is acceptable, echoed maximum and minimum lead second bounds, a pass/fail status string, the operation name (evm_preflight:base_payment_deadline_check), and a tamper-evident evidence object including an input SHA-256 hash, a retained:false flag confirming no data is stored, and a count of zero external calls made.
Example use cases
Pre-submission payment timing check
“I'm about to send a USDC payment on Base — the deadline epoch is 1717203600, the current time epoch is 1717200000, and I want a minimum lead of 30 seconds and maximum of 3600 seconds. Can you confirm whether we're in the valid window before I submit?”
Agent payment orchestration preflight
“My agent is orchestrating an on-chain payment and needs to do a timing preflight: current epoch is 1717201800, deadline epoch is 1717202100, minimum lead is 30 seconds, maximum lead is 600 seconds — is the window valid?”
Deadline window debugging for failed payment
“A Base payment submission was rejected and I'm trying to figure out if it was a timing issue — the deadline was epoch 1717200000 and we tried to submit at epoch 1717196200 with a minimum lead of 60 seconds and maximum lead of 3600 seconds. Was we outside the acceptable window?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/base-payment-deadline-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a lightweight, pay-per-call, no-signup preflight check specifically for Base EVM payment deadline timing. It is ideal when you want verifiable, tamper-evident output (SHA-256 input hash, no data retention) confirming whether the current moment falls within a valid submission window before committing a blockchain transaction. Prefer it over custom time-diff logic when auditability and standardized pass/fail evidence for EVM payment orchestration are required.
Side effects
- Missing required epoch fields returns a validation error
- now_epoch greater than deadline_epoch yields within_window:false and status:fail
- lead_seconds outside the min/max bounds yields within_window:false
- Malformed integer types in input fields may return a schema validation error
- Payment (0.001 USDC on Base via x402) failing due to insufficient funds blocks the call
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| now_epoch | integer | Now Epoch supplied to Base Payment Deadline Check; used only for this bounded calculation and processed in memory without retention. |
| deadline_epoch | integer | Deadline Epoch supplied to Base Payment Deadline Check; used only for this bounded calculation and processed in memory without retention. |
| maximum_lead_seconds | integer | Maximum Lead Seconds supplied to Base Payment Deadline Check; used only for this bounded calculation and processed in memory without retention. |
| minimum_lead_seconds | integer | Minimum Lead Seconds supplied to Base Payment Deadline Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"lead_seconds": 300,
"within_window": true,
"maximum_lead_seconds": 3600,
"minimum_lead_seconds": 30
},
"schema": "delx/util-base-payment-deadline-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "59c678732bd73042e4f51cbf240f3f49ced22b5675207daf3f54360d261c4acb",
"external_calls": 0
},
"operation": "evm_preflight:base_payment_deadline_check"
}
}Tags
x402
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