User:OAbot

Overview
This bot adds links to citation templates, providing alternative open access versions to references in Wikipedia articles. See also:
 * main page of the project;
 * bot approval page;
 * list of maintainers.

You can also simulate the bot on any page for additional references via its web interface: https://tools.wmflabs.org/oabot/

Update 2020: we've started the large-scale addition and maintenance of more identifier-related citation parameters, see Bots/Requests for approval/OAbot 3.

Scope

 * The bot only edits in main space. It is compliant with the bot exclusion templates: to prevent OAbot from editing a particular page, you can use   (for instance). There is no way to prevent OAbot from changing a particular template in a page.
 * The bot only edits cite templates (based on CS1/2), excluding cite web, cite news, cite arxiv and cite book.
 * The bot does not make changes to citations where at least one parameter is known to link to a freely available full text (such as arxiv or pmc).
 * After running the bot, the operator manually fixes the very rare cases of ambiguity, which show up at Category:CS1 errors: URL–wikilink conflict and used to show up at Category:Pages with citations having redundant parameters.