# Opendoor developer resources

> Official public, read-only discovery resources for Opendoor developers and AI agents. Opendoor does not publish customer, property, offer, or transaction actions through this API.

## Start here

- [Developer resources](https://www.opendoor.com/developers): Scope, authentication, error conventions, and support.
- [OpenAPI 3.1.1 document](https://www.opendoor.com/openapi.json): Contract for the public agent resource API.
- [Agent resource catalog](https://www.opendoor.com/api/agent/v1/resources): Canonical URLs and media types.
- [Site-wide llms.txt](https://www.opendoor.com/llms.txt): Opendoor product and content index.
- [Sitemap index](https://www.opendoor.com/sitemaps/sitemap.xml): Public Opendoor pages.

## Authentication

The endpoints in the published OpenAPI document are public, read-only, and require no authentication. Other Opendoor application and service routes are outside this public contract.

## Errors

API errors use RFC 9457 Problem Details with Content-Type application/problem+json. Errors include a stable code, message, and resolution hint.