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

# Quoin Property API

> Source-linked property records for the District of Columbia.

Resolve identifiers, search property records, explore related entities, and retrieve the evidence behind returned facts.

<CardGroup cols={2}>
  <Card title="Make your first request" icon="bolt" href="/quickstart">Create a key and resolve an official property identifier.</Card>
  <Card title="Worked examples" icon="code" href="/examples">Explore the seven operations with requests and responses.</Card>
  <Card title="Data coverage" icon="map" href="/coverage">Understand entity types, record precision, and coverage limits.</Card>
  <Card title="Developer portal" icon="key" href="https://portal.quoindata.com">Manage API keys, credit, usage, and billing.</Card>
</CardGroup>

All seven operations cost **\$0.05 per successful call**. Verified developers receive **\$50 welcome credit** once per email. [Read billing details](/billing).

The API base URL is `https://portal.quoindata.com`. The contract version is `quoin-v2`.

<Note>Worked examples originate from public D.C. records checked on September 10, 2026. Resolve current references before using those examples in your application.</Note>