Cost variance (CV = EV - AC) API

Compute cost variance CV = EV - AC with percent variance, CPI = EV/AC, and an under/over/on-budget rating — the focused PMBOK cost-performance signal. Answers 'what is my cost variance','am I under or over budget','what is the CPI from EV and AC'.

Price$0.01per request

MethodPOST

Route/v1/calc/pm-cost-variance

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

calcpmcost-varianceevmcpibudgetvarianceproject

API URLhttps://x402.hexl.dev/v1/calc/pm-cost-variance

Integration docs

Example request

{
  "earnedValue": 1200,
  "actualCost": 1000
}

Example response

{
  "earnedValue": 1200,
  "actualCost": 1000,
  "costVariance": 200,
  "costVariancePct": 16.67,
  "cpi": 1.2,
  "rating": "under-budget",
  "formula": "CV = EV - AC"
}

Input schema

{
  "type": "object",
  "required": [
    "earnedValue",
    "actualCost"
  ],
  "properties": {
    "earnedValue": {
      "type": "number",
      "description": "EV, budgeted cost of work performed",
      "examples": [
        1200
      ]
    },
    "actualCost": {
      "type": "number",
      "description": "AC, actual cost",
      "examples": [
        1000
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}