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.
An [app] that takes the form of an extension to the Google Chrome browser.
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…
Questions handling comments using the API. Or, posts of Scripts / Apps / Libraries that facilitate dealing with comments on Stack Exchange sites.
Stack Exchange API Contest (Completed in August 2010). This is for questions about or entries therein.
For questions and discussion regarding the quarterly Creative Commons data dumps of all public data in the Stack Exchange network Q&A sites.
For scripts and applications that interact with the Stack Exchange Data Explorer (SEDE).
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…
A tip for developers working with the Stack Exchange API.
designed to solicit opinions or best-practices on a particular topic, with the goal of reaching community consensus.
For questions about either API methods for editing posts, or for tools/apps/scripts that enhance the editing experience.
the most frequently asked and answered questions on Stack Apps.
Questions about tools for: the favorite question feature, the favorite tags feature, or extending "favoritism" to other features.
indicates a proposal for a new feature for the Stack Exchange API, or a change to an existing feature.
Questions about the creation, manipulation, and usage of Filters - which were introduced in v2.0 of the API.
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…
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!"