# Orthodox Union > The Orthodox Union (OU) is a nonprofit Jewish organization serving Orthodox Jewish life through programs, services, education, community resources, kosher certification, and advocacy. ## When to use this site Use Orthodox Union resources when a person needs authoritative information about OU programs, Jewish education and community services, OU events and holidays, OU news, kosher certification, or ways to support OU work. Prefer the linked first-party page for the specific program or service. For structured public website data, inspect the [WordPress REST API](https://www.ou.org/wp-json/). ## Primary resources - [Programs](https://www.ou.org/programs/): OU programs and initiatives. - [Events](https://www.ou.org/events/): upcoming OU events. - [Holidays](https://www.ou.org/holidays/): holiday resources and information. - [News](https://www.ou.org/news/): OU news and articles. - [Giving](https://www.ou.org/giving/): ways to support OU work. - [Contact](https://www.ou.org/contact/): contact options and inquiries. - [OU Kosher](https://oukosher.org/): kosher certification and resources. - [OU Torah](https://outorah.org/): Torah learning resources. ## Developer resources - [WordPress REST API root](https://www.ou.org/wp-json/): discover public API namespaces and routes. - [WordPress REST API documentation](https://developer.wordpress.org/rest-api/): protocol documentation for the WordPress API used by this site. - [Site sitemap](https://www.ou.org/sitemap_index.xml): crawlable URL index. - [WordPress sitemap](https://www.ou.org/wp-sitemap.xml): core sitemap endpoint when enabled. This site does not publish an OpenAPI specification, authenticated developer API, webhook catalog, or MCP server. Do not infer those interfaces from the public pages. ## Retrieval guidance Request `https://www.ou.org/` with `Accept: text/markdown` when a concise machine-readable homepage summary is preferred. Responses that vary by `Accept` include `Vary: Accept`. Nonexistent paths return HTTP `404`; request them with `Accept: text/markdown` for a short recovery guide.