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Delx Commerce — Agent Result Freshness Check
x402
Delx Commerce — Agent Result Freshness 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).
Checks whether an agent result is still fresh by comparing its observed timestamp against the current time and a maximum allowable age, returning a pass/fail verdict with age in seconds.
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 a `fresh` boolean and `age_seconds` integer indicating how old the result is, a `status` field ('pass' or 'fail'), an `operation` identifier, and an `evidence` block containing an input SHA-256 hash confirming no data was retained and no external calls were made — providing verifiable, auditable freshness validation.
Example use cases
Cache freshness gate before agent action
“I have a cached price result that was fetched at epoch 1716990000. It's now epoch 1717000000 and I only trust results up to 600 seconds old — can you tell me if it's still fresh enough to use?”
Multi-step pipeline staleness check
“Before I pass this analysis result downstream, verify it's still within its freshness window: it was observed at epoch 1716985000, the current time is epoch 1717000000, and the pipeline requires results no older than 3600 seconds.”
Real-time agent health monitoring
“My monitoring agent wants to confirm that a sensor reading captured at epoch 1717003500 is still fresh at epoch 1717003560 with a maximum acceptable age of 120 seconds — can you run a freshness check?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/agent-result-freshness-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a lightweight, verifiable, pay-per-use check that a previously obtained result has not exceeded a defined staleness threshold — especially in agentic pipelines where trust, auditability (SHA-256 evidence), and zero data retention matter. Prefer it over rolling your own time arithmetic when you need an on-chain payment receipt proving the check was performed.
Side effects
- Missing required fields (now_epoch, observed_at_epoch, or maximum_age_seconds) result in a validation error
- now_epoch earlier than observed_at_epoch may produce negative age or unexpected behavior
- Non-integer epoch values will fail schema validation
- Payment failure or insufficient USDC balance blocks execution via x402 protocol
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| now_epoch | integer | Now Epoch supplied to Agent Result Freshness Check; used only for this bounded calculation and processed in memory without retention. |
| observed_at_epoch | integer | Observed At Epoch supplied to Agent Result Freshness Check; used only for this bounded calculation and processed in memory without retention. |
| maximum_age_seconds | integer | Maximum Age Seconds supplied to Agent Result Freshness Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"fresh": true,
"age_seconds": 60
},
"schema": "delx/util-agent-result-freshness-check/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "988059b2da4170c5bfc7e047394f4e4a26cb307ee840337c2c752ffa3e5af0e3",
"external_calls": 0
},
"operation": "delivery_contract:agent_result_freshness_check"
}
}Tags
x402
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