Systems Capacity Calculators

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

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Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

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Extensions

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    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "peakLoad": 5000,
          "spareUnits": 1,
          "capacityPerUnit": 800,
          "targetUtilizationPercent": 70
        }
      },
      "output": {
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          "asOf": "2026-10-11T20:19:38.922Z",
          "source": "computed locally",
          "reasons": [
            "Units for load = ceil(peak / (capacity x target utilisation)); spares are added on top so a failure does not push the survivors over target.",
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          "verdict": "RESILIENT",
          "degraded": false,
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          "usableCapacityPerUnit": 560,
          "headroomPercentOverPeak": 60,
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          "loadAtWhichTotalSaturates": 8000,
          "utilizationAfterLosingSparesPercent": 69.44,
          "utilizationAfterLosingOneUnitPercent": 69.44,
          "utilizationAtTargetWithNeedOnlyPercent": 69.44
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    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
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      "properties": {
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          "required": [
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            "method": {
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              "type": "string"
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            "queryParams": {
              "type": "object",
              "required": [
                "peakLoad",
                "capacityPerUnit"
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              "properties": {
                "months": {
                  "type": "integer",
                  "description": "Projection horizon in months, 1 to 120 (default 12)"
                },
                "peakLoad": {
                  "type": "number",
                  "description": "Peak load in any unit (requests/s, jobs/hour, GB/s), above 0"
                },
                "spareUnits": {
                  "type": "integer",
                  "description": "Extra units kept so the cluster survives failures (N+k, default 1)"
                },
                "capacityPerUnit": {
                  "type": "number",
                  "description": "Maximum load ONE unit (server, node, pod) handles in the same unit, measured at its limit"
                },
                "growthPercentPerMonth": {
                  "type": "number",
                  "description": "Compound monthly growth of the peak load for a projection (default 0)"
                },
                "targetUtilizationPercent": {
                  "type": "number",
                  "description": "Highest steady utilisation you will run at, 10 to 100 (default 70)"
                }
              }
            }
          },
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                "disclaimer": {
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                },
                "notChecked": {
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                  "items": {
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                "spareUnits": {
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                "unitsTotal": {
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                },
                "unitsForLoad": {
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                },
                "usableCapacityPerUnit": {
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                "headroomPercentOverPeak": {
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Provenance

Seen in the source catalog

2026-10-20 20:46Z

Last indexed by Roundhouse

2026-10-22 06:50Z

Last enriched (probe, favicon, geo)

2026-10-21 00:15Z

x402 version

2

Max timeout

300s

Liveness probe

HTTP 402