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Percentile for Agents
x402
Percentile for Agents is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Computes a requested percentile (e.g. p50, p95) of a numeric array without requiring a statistics stack
Price / call$0.001
Success—
StatusUnknown
How this service works
Percentile of a list. Use for p50/p95 style summaries without a stats stack. Returns the requested percentile of a numeric array. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.
Output
A JSON object containing the computed percentile value for the submitted numeric array at the requested percentile rank (0–100). The result is a deterministic first-party calculation with no external dependencies.
Example use cases
API latency p99 summary
“I have a list of API response times in milliseconds — [45, 120, 300, 88, 500, 210, 75, 430, 190, 620, 55, 380] — can you find the 99th percentile so I can set my SLA threshold?”
Grade distribution median
“Here are the test scores for my class: [72, 85, 91, 60, 78, 95, 83, 67, 74, 88, 90, 55, 82]. What's the median (p50)?”
Server CPU p90 for capacity planning
“These are CPU utilization samples from my servers over the last hour: [34, 41, 78, 55, 62, 90, 47, 38, 85, 73, 61, 29, 95, 50]. Give me the 90th percentile so I can figure out headroom.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/percentileWhen to prefer
Choose this endpoint when you need a quick, stateless percentile calculation (p50, p95, p99, etc.) from a numeric array inside an agent workflow and you don't want to set up or depend on a statistics library or data pipeline. Ideal for summarizing latency, score distributions, or sensor readings on the fly. At $0.001 USDC per call with no API key or subscription, it's well-suited for lightweight, infrequent agent-side stat operations.
Side effects
- Empty or missing 'values' array returns a structured validation error (not billed)
- Array exceeding 10,000 items is rejected
- Percentile value outside 0–100 range returns a validation error
- Non-numeric values in the array cause a validation error
- Payment failure (insufficient USDC balance or x402 misconfiguration) blocks the call
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| values | array | Numeric samples for stats tools (mean/median/stdev/percentile). Cap 10k numbers. |
| percentile | number | Optional percentile in 0–100 (e.g. 95 for p95). Handler default when omitted. |
Output
Schema · Response
{
"type": "json",
"example": {
"p": 50,
"count": 5,
"value": 6,
"schema": "delx/percentile/v1"
}
}Tags
x402
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