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

# Introduction

> The v3 Realie Property Data API — the current data generation.

Welcome to the Realie Property Data API. The v3 generation serves the same endpoints
you already use, backed by our current national data build: fresher sales (through
mid-May 2026 in most states), per-unit parcel identity via `realieParcelId`, corrected
building characteristics, and nationally normalized assessor codes.

<Note>
  **API versions.** v3 is the current Realie data generation and the contract documented
  in this tab; v2 is the [legacy reference](/api-reference/v2-legacy), preserved for
  existing integrations. Endpoint URLs, authentication, rate limits, and billing do not
  change between versions.
</Note>

## Getting Started

<Steps>
  <Step title="Sign In">
    Create an account and sign in. Every account starts on the Free plan with a monthly token allowance shared across the Platform and API.
  </Step>

  <Step title="Enable API Access">
    Add a payment method from [Billing](https://app.realie.ai/billing/) to enable API requests. We place a temporary \$0.50 authorization hold to verify the card, then release it immediately.
  </Step>

  <Step title="Copy Your API Key">
    Open [Usage](https://app.realie.ai/dashboard/) and select **API access** to copy your key. Once API access is enabled, include this key in the headers of your requests.
  </Step>

  <Step title="Explore our Endpoints">
    Discover the full range of property data available by exploring our endpoints, conveniently accessible via the sidebar on the left.
  </Step>
</Steps>

## Coming from v2?

Most integrations keep working unchanged: endpoint URLs, request parameters, and the
large majority of response fields are identical. The differences that matter — a
stable parcel identifier, a handful of renamed or removed fields, decimal bathrooms,
and new vocabularies for some coded fields — are catalogued in the
[v2 → v3 migration guide](/api-reference/v3/migration).