# `zappier/meter`

**Package:** `zappier`  
**Source:** `packages/zappier/src/meter.ts`  
**Lines:** 49

## What this module is

Implementation module in `zappier`. The tables below are extracted from the source (signatures + JSDoc).

## Exports

`meter`

## Types / interfaces / classes

_None extracted._

## Functions

| Name | Parameters | Param types (JSDoc) | Returns | Calls (same file / helpers) |
|------|------------|---------------------|---------|-----------------------------|
| `meter` | `endpointId: string,
  repo: UsageRepo,
  pricing: PricingContext,` | — | `unknown` | see Call graph |

## Methods (class / object)

| Name | Parameters |
|------|------------|
| `return` | `req, res, next` |

## What it imports / requires

- `express`
- `./pricing`
- `./usage`

## Call graph (identifiers invoked)

`meter`, `status`, `json`, `byteLength`, `stringify`, `reduce`, `quoteCall`, `record`, `next`

Each identifier is a call site in this file. Follow the import list to see the defining module; open that module’s MD for parameter and return types.

## Return values (how to read this)

- HTTP route handlers return Express `res.json(...)` bodies (see route docs).
- Zapier `perform` functions return a **single object** (creates) or an **array** (triggers/searches).
- Pricing functions return integer **cents** on `Quote.totalCents`.