# Data models

Each model has its own MD, Sphinx RST, and PDF under `docs/models/` and `docs/models-pdf/`.

| Model | Defined in | Role |
|-------|------------|------|
| [PriceRule](PriceRule.md) | `packages/zappier/src/pricing.ts` | free / fixed / variable list price |
| [TierConfig](TierConfig.md) | `pricing.ts` | multiplier + monthly credit |
| [RateCard](RateCard.md) | `pricing.ts` | map of operationId → PriceRule |
| [Quote](Quote.md) | `pricing.ts` | listCents, totalCents, breakdown |
| [CallUsage](CallUsage.md) | `pricing.ts` | metadataBytes, attachmentBytes |
| [Customer](Customer.md) | `packages/zappier/src/auth.ts` | id, tierId, apiKey |
| [AddNumbersResult](AddNumbersResult.md) | `packages/verae-activate/creates/add_numbers.js` | number1, number2, sum, mode |
| [TimestampRequest](TimestampRequest.md) | Verae OpenAPI | data, hashAlg |
| [TimestampResponse](TimestampResponse.md) | Verae OpenAPI | jobId |
| [StatusResponse](StatusResponse.md) | Verae OpenAPI | id, status, result, metadata |