{"name":"rule-of-40-calculator","description":"Calculates the rule of 40 from ARR growth rate plus EBITDA (or gross) margin, then folds it into a full operating-metrics score alongside net revenue retention, burn multiple, magic number, and logo churn. Same calculator as saas-metrics-score, listed here for buyers who specifically search rule of 40. Send arr, growth_rate_pct, gross_margin_pct, net_revenue_retention_pct, burn_multiple, magic_number, ebitda_margin_pct, and logo_churn_pct; the response returns score, grade, a written recommendation, the underlying metrics, and per-driver weights. The response shows every metric and driver used in the score. Use it as a rule of 40 calculator, SaaS benchmark score, or operating-efficiency check for diligence and investor updates.","price":"$0.01","method":"POST","input_schema":{"properties":{"arr":{"type":"number","description":"Annual recurring revenue."},"growth_rate_pct":{"type":"number","description":"Annual ARR growth rate percent."},"gross_margin_pct":{"type":"number","description":"Gross margin percent."},"net_revenue_retention_pct":{"type":"number","description":"Net revenue retention percent."},"burn_multiple":{"type":"number","description":"Net burn divided by net new ARR. Optional."},"magic_number":{"type":"number","description":"Sales efficiency magic number. Optional."},"ebitda_margin_pct":{"type":"number","description":"EBITDA margin percent for rule-of-40. Defaults to 0 when omitted."},"logo_churn_pct":{"type":"number","description":"Annual logo churn percent. Optional."}},"required":["arr","growth_rate_pct","gross_margin_pct","net_revenue_retention_pct"]},"input_example":{"arr":4800000,"growth_rate_pct":48,"gross_margin_pct":82,"net_revenue_retention_pct":118,"burn_multiple":1.2,"magic_number":0.9,"ebitda_margin_pct":-8,"logo_churn_pct":4},"output_example":{"calculator":"saas-metrics-score","score":74.2,"grade":"strong","recommendation":"Proceed with standard diligence and covenant checks.","metrics":{"arr":4800000,"rule_of_40_pct":40,"net_revenue_retention_pct":118,"burn_multiple":1.2,"magic_number":0.9},"drivers":[{"name":"rule_of_40","score":85,"weight":0.25,"note":"40 rule-of-40 score"}],"warnings":[],"source":"deterministic in-process finance calculator; no upstream API"},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}