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RDF Data Shapes Working Group

Mission: produce a W3C Recommendation for describing structural constraints and validate RDF instance data against those. (See Charter)


The WG has been officially approved by the W3C and the call for participation marked the official launch of the WG. The WG is expected to have weekly calls. See below for additional info.


Useful Working Group Wiki pages and documents

Other Input Documents

The documents here have been proposed as documents for the working group or embody proposals for various aspects of SHACL. They are mostly no longer under active consideration by the working group.


See list of current participants, (or with contact info), wiki user pages, nicknames.

If you want to join this group, see How to Join.

If you are officially in the group, you will automatically receive group email and your login and password will work on this wiki.

We currently use two mailing lists as follows: 
Dedicated to WG discussions. Non WG members can subscribe but cannot post. See public-data-shapes-wg archive. 
Open to all, used for public discussion. See public-rdf-shapes archive.


As of 19 October 2016, regular teleconferences are scheduled on Wednesday, at 9am US Eastern (Boston) time for 90 minutes, 15:00 Paris/Berlin/A'dam, 14:00 London (see time converter for additional timezones and daylight saving time variations)

Next Meeting

  • Teleconference Wednesday 2016.10.26 Agenda

Future Meetings

  • Teleconference Wednesday 2016.11.02 Agenda * Beware of time change due to Daylight savings differences!! *

Past Meetings


This section provides references to some implementations in the works. Please, note that this list is merely informative and does not represent any form of endorsement by W3C or the WG.


W3C Working Group Resources

Patent Policy

This Working Group operates under the W3C Patent Policy (5 February 2004 Version). To promote the widest adoption of Web standards, W3C seeks to issue Recommendations that can be implemented, according to this policy, on a Royalty-Free basis.

For more information about disclosure obligations for this group, please see the W3C Patent Policy Status Page.


Email the chairs and staff contacts at