A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
For questions relating to version 2 of OAuth, which is an open standard for authorization. See also the tag oauth.
For questions relating to version 2.1 of the Stack Exchange API.
Indicates that a request (usually a feature request) has been considered, but will not be implemented. Generally speaking, a developer will leave a comment as to why, or the community will come to con…
Accompanies [app]s written in, or [library]s meant to be used from, the C# programming language
For questions related to developing Stack Apps for the Android platform. General Android development questions should go to Stack Overflow; for non-development questions, see Android Enthusiasts Stack…
the centralized domain used for network-wide authentication to any site in the network.
"Posts" covers both questions and answers. (And perhaps wiki pages) For example, you may use this tag for apps that help with general editing.
Questions that relate to interaction with or usage of this site (Stack Apps).
A question about the /inbox and related Stack Exchange API methods.
awarded to encourage and reward positive community actions within the site.
Use if the question applies ONLY to Stack Overflow and not the rest of the Stack Exchange sites. THIS TAG IS RARELY APPROPRIATE, only use it if you are very sure.
Questions about (user)script support, or using the API from userscripts. If you are announcing or posting a userscript, use the "script" tag instead.
Accompanies [app]s written in, or [library]s meant to be used from, the Java programming language
For questions about the `site` parameter or the /sites route of the API. Or about dealing with multiple Stack Exchange sites in/with the API.
Questions about whether userscripts ([script] tag) with certain functionality exist. Some members of the community may react to these questions by creating those userscripts, should they not exist.
Questions about the creation, manipulation, and usage of Filters - which were introduced in v2.0 of the API.
Questions about API methods that add or modify content on Stack Exchange sites. These methods must be invoked via HTTP POST.
A tip for developers working with the Stack Exchange API.
Questions about using PHP code to interact with Stack Exchange and/or the Stack Exchange API. ... For general PHP questions, post on Stack Overflow instead.
Tools that help with the post timeline feature, or issues with the API handling of /timeline routes.
Indicates that the issue will be reviewed in the future, or that a change in functionality is being delayed until a future date.
a text-based open standard. It is human-readable and used for data interchange between applications. Use this tag for questions related to topics about using JSON.
A question about how the API returns user associations.
parts of Stack Exchange posts, usually in conjunction with the editing tag.
For questions and discussion regarding the quarterly Creative Commons data dumps of all public data in the Stack Exchange network Q&A sites.
for tools/issues about flags or flagging of posts or chat messages. Flags alert about quality issues on content, when the flagger lacks sufficient reputation to deal with the problem dire…