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.
a lightweight, plain-text, markup language. It is used across the entire Stack Exchange network for post formatting (Questions, answers, wikis, chat) and comment formatting.
For apps and scripts which add additional functionality to the review queues, or make it available outside web browsers.
for tools/issues about *either* closed/on-hold questions or about the process of close-voting or flagging questions into the closed (or on-hold) state. Closed questions will not accept a…
the most frequently asked and answered questions on Stack Apps.
used for questions regarding the limits of the API, including quotas as well as throttling.
if the question deals with problems with, or alterations to, jQuery in conjunction with Stack Exchange. Do not use the tag merely because your tool employs jQuery.
Question relating to the (now obsolete) Soapi.JS family of libraries.
Questions about Stack Exchange notifications and the API routes that provide them. Not about apps that provide notifications - use [notifier] instead.
**OBSOLETE** version of the API. Decommissioned in May 2014.
Use either for issues with the design of stackapps.com (HTML/CSS/UI) or for scripts that enhance the design (not features) of Stack Exchange sites. ... Use in conjunction with either the [meta] or th…
For *general* questions about using code libraries with Stack Exchange sites or the API. To POST, or announce a library, use the [library] tag instead. For questions about an existing, Stack-Exc…
For (meta) questions about apps, in general, that use or augment Stack Exchange. ... Or about the App listing process here on Stack Apps. ... Use in conjunction with one, or more, of the following tag…
For apps which work only on Windows platforms, or were specifically built for them.
Question relating to the (now obsolete) Soapi.CS family of libraries.
For scripts that enhance browsing Stack Exchange by adding keyboard shortcuts (beyond the already existing ones). Use together with the [script] tag.
Tag for questions related to User Flairs which are "a piece of valuable flair™ you can place on any website to show off your user profile!"
a PHP wrapper for the StackExchange API created by George Edison.
For applications using the Stack Exchange API, which have been written for the iOS mobile platform.
For questions about the maximum number of API calls per day, AKA 'quota'; 300 for unregistered apps, and 10000 for registered apps (per user when using personalized access tokens, per app otherwise).
For questions related to the use of paging (returning a limited number of results, and using a page parameter to get the next batch) in the Stack Exchange API.