{"uid":"cap_qWsX7w0_mCNVCQZMmRYA7","slug":"subscription-ltv-ltv-cac-churn-sensitivity-calculator-07c277b2","name":"Subscription LTV, LTV:CAC & Churn Sensitivity Calculator","description":"Deterministic SaaS & DTC replenishment subscription LTV:CAC and payback calculator. Pass ?monthly_price_usd=29&gross_margin_pct=80&monthly_churn_pct=6.5&cac_usd=95. Returns expected subscriber tenure, gross-margin LTV, LTV:CAC ratio, CAC payback months, health verdict, and LTV dollar lift from reducing monthly churn by 1.5 points.","url":"https://x402-niche-briefs.fly.dev/v1/subscription-ltv-churn-calc?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["monthly_price_usd","gross_margin_pct","monthly_churn_pct","cac_usd"],"properties":{"cac_usd":{"type":"string","description":"Customer acquisition cost (CAC) in USD"},"gross_margin_pct":{"type":"string","description":"Gross margin percentage (1-100)"},"monthly_churn_pct":{"type":"string","description":"Monthly subscriber churn percentage (0.1-99.9)"},"monthly_price_usd":{"type":"string","description":"Monthly recurring price per subscriber in USD"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["as_of","inputs","metrics","churn_sensitivity"],"properties":{"as_of":{"type":"string"},"inputs":{"type":"object","required":["monthly_price_usd","gross_margin_pct","monthly_churn_pct","cac_usd"],"properties":{"cac_usd":{"type":"number"},"gross_margin_pct":{"type":"number"},"monthly_churn_pct":{"type":"number"},"monthly_price_usd":{"type":"number"}}},"metrics":{"type":"object","required":["monthly_gross_profit_per_subscriber_usd","expected_lifetime_months","gross_revenue_ltv_usd","gross_margin_ltv_usd","ltv_to_cac_ratio","cac_payback_months","benchmark_verdict"],"properties":{"ltv_to_cac_ratio":{"type":"number"},"benchmark_verdict":{"type":"string"},"cac_payback_months":{"type":"number"},"gross_margin_ltv_usd":{"type":"number"},"gross_revenue_ltv_usd":{"type":"number"},"expected_lifetime_months":{"type":"number"},"monthly_gross_profit_per_subscriber_usd":{"type":"number"}}},"churn_sensitivity":{"type":"object","required":["if_churn_drops_1_5_pts_to_pct","new_gross_margin_ltv_usd","ltv_gain_per_customer_usd"],"properties":{"new_gross_margin_ltv_usd":{"type":"number"},"ltv_gain_per_customer_usd":{"type":"number"},"if_churn_drops_1_5_pts_to_pct":{"type":"number"}}}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_yn8ABhJpNvqvouN56-Ixa","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes deterministic SaaS/DTC subscription LTV, LTV:CAC ratio, CAC payback period, and churn reduction sensitivity given monthly price, gross margin, churn rate, and CAC.","exampleAgentPrompt":"Can you calculate the LTV and LTV:CAC ratio for our subscription product — it's priced at $29/month, gross margin is 80%, monthly churn is 6.5%, and we're spending $95 to acquire each customer? Also tell me what we'd gain if we knocked churn down 1.5 points.","exampleUseCases":[{"title":"SaaS unit economics health check","prompt":"Run the unit economics for my SaaS: $49/month price, 72% gross margin, 4.2% monthly churn, and $180 CAC — is our LTV:CAC healthy and how fast do we pay back acquisition costs?"},{"title":"DTC replenishment box LTV benchmark","prompt":"I run a $35/month DTC supplement subscription with 65% gross margin, 8% monthly churn, and $60 CAC — what's my gross margin LTV and how does the LTV:CAC ratio benchmark?"},{"title":"Churn reduction ROI analysis","prompt":"Our subscription costs $19/month, gross margin is 85%, current monthly churn is 9%, and CAC is $75 — how much extra LTV per customer would we get if we cut churn by 1.5 percentage points?"}],"resultDescription":"Returns a JSON object containing: echoed inputs, computed metrics (monthly gross profit per subscriber, expected lifetime months, gross revenue LTV, gross margin LTV, LTV:CAC ratio, CAC payback months, benchmark health verdict), and churn sensitivity analysis showing the new gross margin LTV and dollar LTV gain per customer if monthly churn drops by 1.5 percentage points.","failureModes":["Missing required query parameters (monthly_price_usd, gross_margin_pct, monthly_churn_pct, cac_usd) returns an error","Churn percentage outside valid range (0.1–99.9) may cause computation errors or rejected input","Non-numeric string values for numeric fields will fail validation","Payment failure via x402 protocol will block the response","Gross margin over 100 or below 0 is invalid and likely rejected"],"whenToPreferThis":"Use this endpoint when you need a fast, deterministic, formula-based LTV and unit economics calculation for a subscription business — especially when you want the churn sensitivity analysis baked in. It's ideal for SaaS or DTC replenishment models where you have simple monthly recurring pricing, a known gross margin, and a CAC figure. Prefer this over building your own spreadsheet logic or calling an LLM for math when you need reproducible, benchmarked results with a health verdict.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T19:06:01.146Z","isFirstParty":false,"canonicalSlug":"subscription-ltv-ltv-cac-churn-sensitivity-calculator-07c277b2"}