> ## Documentation Index
> Fetch the complete documentation index at: https://docs.maalbar.dk/llms.txt
> Use this file to discover all available pages before exploring further.

# Quick Start

> Build a complete LCA screening integration from scratch — locations, routes, screening data, and results.

This guide walks through the full integration flow in order. Each step builds on the previous one, so work through them in sequence.

## Prerequisites

* An API key — generate one at [lca.maalbar.dk/api-keys](https://lca.maalbar.dk/api-keys)
* A REST client (cURL, Postman, or the interactive playground in the [API Reference](/api-reference/introduction))

## Base URL

All requests go to:

```
https://api.maalbar.dk
```

## Authenticate

Every request requires your API key in the `X-Api-Key` header. Verify it works by fetching your customer record:

```bash cURL theme={null}
curl https://api.maalbar.dk/v1/customer \
  -H "X-Api-Key: mb_live_xxxxxxxxxxxxxxxx"
```

A `200` response confirms your credentials are valid. A `401` means the key is wrong or missing.

## Steps

<CardGroup cols={2}>
  <Card title="Create Locations" icon="location-dot" href="/developer/quickstart/locations">
    Set up supplier factories, warehouses, and sales channels.
  </Card>

  <Card title="Create Routes" icon="route" href="/developer/quickstart/routes">
    Define transport legs between your locations.
  </Card>

  <Card title="Create a Screening" icon="file-circle-plus" href="/developer/quickstart/screening">
    Create a product and attach a screening to it.
  </Card>

  <Card title="Add Materials" icon="layer-group" href="/developer/quickstart/materials">
    Add materials from the Målbar catalog to the screening.
  </Card>

  <Card title="Add Packaging" icon="box-open" href="/developer/quickstart/packaging">
    Add packaging items from the Målbar catalog to the screening.
  </Card>

  <Card title="Retrieve Results" icon="chart-bar" href="/developer/quickstart/results">
    Fetch the CO₂ footprint and export results in bulk.
  </Card>
</CardGroup>