Subscription MRR / ARR & NRR API

Compute MRR (subscribers × ARPU), ARR (MRR × 12), net-new MRR (new + expansion − churned − contraction), and net revenue retention. Deterministic SaaS/subscription math. Answers 'what is my MRR and ARR','net new MRR and net revenue retention'.

Price$0.01per request

MethodPOST

Route/v1/calc/ecom-subscription-mrr

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

ecommrrarrsubscriptionsaasnrrrecurringcalc

API URLhttps://x402.hexl.dev/v1/calc/ecom-subscription-mrr

Integration docs

Example request

{
  "subscribers": 500,
  "arpu": 30,
  "newMrr": 1500,
  "expansionMrr": 500,
  "churnedMrr": 300,
  "contractionMrr": 100
}

Example response

{
  "formula": "MRR = subscribers × ARPU; netNewMRR = new + expansion − churned − contraction; ARR = MRR × 12",
  "subscribers": 500,
  "arpu": 30,
  "mrr": 15000,
  "arr": 180000,
  "netNewMrr": 1600,
  "netRevenueRetention": 1.0075,
  "nrrPercent": 100.75
}

Input schema

{
  "type": "object",
  "required": [
    "subscribers",
    "arpu"
  ],
  "properties": {
    "subscribers": {
      "type": "number",
      "examples": [
        500
      ]
    },
    "arpu": {
      "type": "number",
      "description": "Average revenue per user per month",
      "examples": [
        30
      ]
    },
    "newMrr": {
      "type": "number",
      "examples": [
        1500
      ]
    },
    "expansionMrr": {
      "type": "number",
      "examples": [
        500
      ]
    },
    "churnedMrr": {
      "type": "number",
      "examples": [
        300
      ]
    },
    "contractionMrr": {
      "type": "number",
      "examples": [
        100
      ]
    }
  }
}

Output schema

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