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Delx Latency Summary
x402
Delx Latency Summary is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Computes p50, p95, p99, mean, min, and max latency statistics from an array of millisecond samples
Price / call$0.002
Success—
StatusUnknown
How this service works
Calculate p50, p95, p99, mean, min, and max from bounded latency samples. Use it before an autonomous workflow acts on untrusted input, changes an API, retries a request, or evaluates production reliability. Returns bounded machine-readable JSON for $0.002 USDC via x402 on Base. Execution is deterministic, first-party, local-only, stateless, and does not call an upstream provider; structured validation failures are not billed.
Output
Returns a machine-readable JSON object containing p50, p95, p99, mean, min, and max computed from the submitted latency array; computation is deterministic and local with no upstream calls. Structured validation failures are returned without charge.
Example use cases
Pre-retry reliability check
“Before retrying that flaky downstream service, compute the latency summary for these 50 measured response times so I can decide whether p99 is within our 500ms SLA threshold.”
Autonomous workflow preflight gate
“Run a latency summary on these 200 timing samples from the last 10 minutes — I need the p95 and p99 before the agent decides whether to proceed with the batch job or back off.”
Production API performance report
“Here are 1000 API response times in milliseconds from today's traffic — calculate the full latency summary including p50, p95, p99, mean, min, and max so I can report on production reliability.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/latency-summaryWhen to prefer
Choose this endpoint when you need fast, deterministic, local latency percentile computation (p50/p95/p99) without any third-party data dependency. Ideal as a preflight check in autonomous workflows before retrying requests, changing API behavior, or evaluating production reliability. Prefer it over rolling your own stats logic when you need structured, machine-readable output at minimal cost ($0.002 USDC) with guaranteed no upstream calls and no state side effects.
Side effects
- Array contains fewer than 1 item — validation error returned, not billed
- Array exceeds 10,000 items — validation error returned
- Non-numeric or negative values in the array — schema validation failure
- Malformed JSON body — 400-class error
- Payment not provided or insufficient — 402 response via x402 protocol
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| latencies_ms | array |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 5,
"max_ms": 55,
"min_ms": 12,
"p50_ms": 22,
"p95_ms": 50.2,
"p99_ms": 54.04,
"schema": "delx/latency-summary/v1",
"mean_ms": 27.6
}
}Tags
x402
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