> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-getting-started-guide.md).

# AddressBase Core Getting Started Guide

This getting started guide provides instructions for using AddressBase Core in different software applications. Users with limited technical knowledge will be able to follow this guide.

AddressBase Core is an easy-to-use, accessible addressing data product that gives plug-and-play access to complete and accurate address data. It combines key elements from existing AddressBase products into a simplified product.

{% hint style="info" %}
AddressBase Core's primary source of addressing information is Local Authorities who have the statutory responsibility to capture and maintain Great Britain's address data. This ensures that the data is both authentic and authoritative in nature. Records are supplemented with Royal Mail Postal Address File (PAF) information and additional Ordnance Survey information on the usage of the address and unique identifiers that allow links to other OS and third-party datasets. Please read Data sources in AddressBase general for further details.
{% endhint %}

## What you need?

* Access to AddressBase Core data via a [Public Sector Plan](https://osdatahub.os.uk/plans) or the [Premium Plan](https://osdatahub.os.uk/plans).
* Basic technical knowledge of geographic information systems (GIS) and databases.

## Instructions

These instructions show you how to use AddressBase Core and include:

* [Downloading a dataset](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-getting-started-guide/downloading-a-dataset.md)
* [Working with CSV data](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-getting-started-guide/working-with-csv-data.md)
* [Working with GPKG data](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-getting-started-guide/working-with-gpkg-data.md)
* [Working with COU data](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-getting-started-guide/working-with-cou-data.md)
* [Working with tiled data](/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-getting-started-guide/working-with-tiled-data.md)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-core/addressbase-core-getting-started-guide.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
