Rulvar API reference / @rulvar/rulvar / compareRates
Function: compareRates()
function compareRates(seed, page): string[];Defined in: packages/core/dist/index.d.ts
Compares a pricing seed against rates extracted from the provider's documented pricing page, in BOTH directions (RV902): a seed rate the page moved or dropped is a finding, and so is a documented billable rate the seed never declared, because a billable column missing from the seed is a silent underpricing channel (the 1h cache-write premium hid exactly there). Declared long-context tiers compare field by field. Returns human-readable findings, empty when the sides agree; the weekly rates audit (scripts/rates-audit.mjs) runs this exact comparator over the live pages, and the fault-injection kit drives it as a permanent gate (RV909). It verifies DOCUMENTATION, not billing: only a statement reconciliation over saved exports settles what the provider's meter actually charges.
Parameters
| Parameter | Type |
|---|---|
seed | DocumentedRates |
page | DocumentedRates |
Returns
string[]