agentutility(7)$ man rule-of-40-calculator
/rule-of-40-calculator
PRICE / CALL
$0.01
USDC · base mainnet · scheme: exact
METHOD
POST
CLUSTER
edgefinanceCATEGORY
uncategorized
STATUS
● live
NAME
rule-of-40-calculator — rule of 40 calculator / saas benchmark score / arr growth plus ebitda margin
synonym alias of saas-metrics-score — reuses the canonical handler.
SYNOPSIS
POST https://x402.agentutility.ai/rule-of-40-calculator
Content-Type: application/json
X-PAYMENT: <signed-transferWithAuthorization>
{ ... }↳ first call →
402 Payment Required. Sign USDCtransferWithAuthorization, retry with theX-PAYMENT header.DESCRIPTION
Rule of 40 calculator / SaaS benchmark score / ARR growth plus EBITDA margin. Same deterministic calculator as saas-metrics-score.
INPUT — request schema
| property | type | description | req? |
|---|---|---|---|
| arr | number | Annual recurring revenue. | required |
| growth_rate_pct | number | Annual ARR growth rate percent. | required |
| gross_margin_pct | number | Gross margin percent. | required |
| net_revenue_retention_pct | number | Net revenue retention percent. | required |
| burn_multiple | number | Net burn divided by net new ARR. Optional. | optional |
| magic_number | number | Sales efficiency magic number. Optional. | optional |
| ebitda_margin_pct | number | EBITDA margin percent for rule-of-40. Defaults to 0 when omitted. | optional |
| logo_churn_pct | number | Annual logo churn percent. Optional. | optional |
OUTPUT — response shape
| field | type | description |
|---|---|---|
| calculator | string | — |
| score | string | — |
| grade | string | — |
| recommendation | string | — |
| metrics | string | — |
| drivers | string | — |
| warnings | string | — |
| source | string | — |
EXAMPLES — two ways to call
EXAMPLE 1 · curl
curl -X POST https://x402.agentutility.ai/rule-of-40-calculator \
-H 'Content-Type: application/json' \
-d '{ }'first response =
402 Payment Required with payment requirements; sign + retry with X-PAYMENT.EXAMPLE 2 · mcp
# Install the MCP package for this endpoint's cluster npx -y @agentutility/mcp-<cluster> # Required: EVM private key with USDC on Base export X402_PRIVATE_KEY=0x... # Then call the rule-of-40-calculator tool from your MCP-aware agent.
MCP server handles payment automatically — your coding agent just calls the tool by name.
METADATA
- tags
- edge-financeruleof40calculatorrule-of-40-calculator
- methods
- POST
- cluster
- edgefinance
- price
- $0.01 USDC per call
ADJACENT — other endpoints in edgefinance
| endpoint | description | price |
|---|---|---|
| amortization-schedule | Amortization schedule API / loan payment schedule / debt amortization calculator. | $0.01 |
| blended-finance-score | Blended finance score API / concessional capital efficiency / private capital mobilization / first-loss impact finance calculator. | $0.01 |
| blended-finance-score-api | Blended finance score API / concessional capital leverage scoring / impact finance risk score. | $0.01 |
| blended-finance-score-api-f70b81 | Blended finance score API / concessional capital efficiency / private-capital leverage and impact score. | $0.01 |
| break-even-calculator | Break-even calculator API / contribution margin calculator / unit economics break-even units / fixed cost payback. | $0.01 |
| cash-conversion-cycle-calculator | Cash conversion cycle calculator / working capital optimization API / DSO DIO DPO analysis. | $0.01 |
| cash-runway-calculator | Cash runway calculator / startup burn runway API / founder finance planning. | $0.01 |
| contribution-margin-calculator | Contribution margin calculator / break-even units API / fixed-cost recovery calculator. | $0.01 |
SEE ALSO