Wikimedia content is organized by project and language. Each project hosts a different type of free content—encyclopedia articles on Wikipedia, dictionary entries on Wiktionary—and can be published under a different free license. Wikimedia API requests include the project name in the URL. Use this page to explore different projects that you can access with the Wikimedia API.
Most Wikimedia projects are created and maintained in a single language. This means that what we think of as Wikipedia is really over 300 different Wikipedias—English Wikipedia, Cebuano Wikipedia, Swedish Wikipedia, and many more—all writing original articles in their own language. For single-language projects, Wikimedia API requests include the language code in the URL. Available languages vary by project; visit the site matrix for a complete list of projects and languages.
About language codes: Language codes are used as subdomains for Wikimedia projects. Based on ISO 639-1 and ISO 639-2, language codes are usually two or three letters, such as
en for English,
es for Spanish, and
ar for Arabic. To find a language code, visit the site matrix.
Some projects are maintained in English and translated into other languages, or they are created to be language neutral. These multilingual projects use the project name as the subdomain instead of a language code. Wikimedia API requests to multilingual projects should not include a language code in the URL.