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Unit Contribution Local Finite-Change Elasticity Calculator
x402
Unit Contribution Local Finite-Change Elasticity Calculator is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).
Measures how unit contribution (unit price minus variable cost per unit) responds to a small percentage change in a specified input variable, providing a local elasticity approximation.
Price / call$0.01
Success—
StatusUnknown
How this service works
Unit contribution - Local finite-change elasticity: Measure output response to a supplied small percentage change in one nonzero input; local approximation. Metric: Unit contribution. Supplied figures only; returns JSON with formula, units and limitations. One of 50 calculators with 20 analysis modes. No live feed, financial advice or trade execution. 0.01 USDC includes one bounded local finite-change elasticity report.
Output
A JSON object containing the computed local finite-change elasticity of unit contribution, along with the formula used, units, and a statement of limitations (local approximation only, valid for small percentage changes around the supplied baseline).
Example use cases
Pricing sensitivity check for product manager
“I have a product with a unit price of $50 and variable cost of $35 per unit. How elastic is the unit contribution to a 2% change in unit price?”
Cost increase impact on unit margin
“My supplier just raised costs — my unit price is $100 and variable cost per unit is $60. What's the local elasticity of unit contribution if variable cost increases by 0.5%?”
Margin sensitivity for startup pricing model
“We're setting pricing for a SaaS product: unit price is $25, variable cost per unit is $8. Can you run a finite-change elasticity analysis on the unit contribution varying unit price by 1%?”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/assistant-finance-unit-contribution-elasticity?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, interpretable local sensitivity measure showing how unit contribution responds to marginal changes in price or variable cost, especially for back-of-envelope pricing decisions or scenario planning. Prefer it over full financial modeling APIs when you only need a single-variable elasticity approximation and want a structured JSON result with formula and caveats included.
Side effects
- Variable cost per unit equals unit price (zero unit contribution baseline causes division issues)
- Step percent outside allowed range 0.01–10 returns validation error
- Missing required baseline fields returns schema validation error
- Extremely large values near the maximum bound may produce numerically unstable results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| field | string | |
| baseline | object | |
| step_percent | number |
Tags
x402
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