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Delx Commerce — EVM Deadline Check
x402
Delx Commerce — EVM 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 Unix epoch timestamp meets a minimum lead-time window before a deadline, used for EVM transaction preflight checks.
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 the minimum lead time is satisfied, the minimum and maximum lead seconds bounds, a pass/fail status, the operation name, and a verifiable evidence block including an input SHA-256 hash and confirmation that no data was retained and no external calls were made.
Example use cases
DeFi swap preflight timing check
“Before I submit this on-chain swap, check if current epoch 1718001000 has at least 120 seconds of lead time before the transaction deadline at epoch 1718001500.”
Smart contract execution window validation
“I need to verify that right now (epoch 1718100000) is within the valid execution window for a contract deadline at epoch 1718100900, requiring at least 60 seconds of lead time.”
Agent transaction scheduler safety check
“My agent is about to send an EVM transaction — can you confirm that the current epoch 1718200000 satisfies the 300-second minimum lead before the deadline epoch 1718200600?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/evm-deadline-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent or automated system needs a verifiable, tamper-evident preflight check that a given deadline epoch has sufficient lead time before initiating an EVM blockchain transaction. Prefer it over client-side arithmetic when you need a cryptographic evidence hash (SHA-256 of inputs) and a structured pass/fail result for auditability, particularly in DeFi or smart contract orchestration workflows.
Side effects
- Missing required fields (now_epoch, deadline_epoch, minimum_lead_seconds) result in validation error
- Deadline already passed (deadline_epoch < now_epoch) may return within_window: false
- Payment not provided or insufficient USDC results in HTTP 402 rejection
- Integer overflow for extremely large epoch values
- Malformed request body returns HTTP 400
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| now_epoch | integer | Now Epoch supplied to EVM Deadline Check; used only for this bounded calculation and processed in memory without retention. |
| deadline_epoch | integer | Deadline Epoch supplied to EVM Deadline Check; used only for this bounded calculation and processed in memory without retention. |
| minimum_lead_seconds | integer | Minimum Lead Seconds supplied to EVM 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": 9223372036854776000,
"minimum_lead_seconds": 60
},
"schema": "delx/util-evm-deadline-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "6837bc595d9c82af4770ef6b89ff2cab040826dc0d84c5e6251a7516cefbedb6",
"external_calls": 0
},
"operation": "evm_preflight:evm_deadline_check"
}
}Tags
x402
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