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MediaWiki extensions manual
OOjs UI icon advanced.svg
Release status: beta
Implementation ContentHandler , Page action , Special page , API
Description Store Shape Expression Schemas on wiki pages
Author(s) The Wikidata team
Latest version continuous updates
MediaWiki master
Database changes Yes
License GNU General Public License 2.0 or later
  • $wgEntitySchemaShExSimpleUrl
Translate the EntitySchema extension
Check usage and version matrix.
Issues Open tasks · Report a bug

The EntitySchema extension allows storing Shape Expressions Schemas on wiki pages (using ShExC syntax), as well as validating entities against those Schemas using the ShEx2 — Simple Online Validator. For more information on enabling this second part, see #Advanced Configuration.


  • Download and place the file(s) in a directory called EntitySchema in your extensions/ folder.
  • Only when installing from git run Composer to install PHP dependencies, by issuing composer install --no-dev in the extension directory. (See T173141 for potential complications.)
  • Add the following code at the bottom of your LocalSettings.php:
    wfLoadExtension( 'EntitySchema' );
  • Yes Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

Advanced Configuration[edit]

Prerequisites for displaying the optional "check entities against this Schema" link on the Schema page: