Project news

Invitation to comment on LegalRuleML Core Specification Version 1.0 before call for consent as OASIS Standard – ends Aug 14th

Extends the RuleML standard with formal features specific to legal norms, guidelines, policies and reasoning.

OASIS and the LegalRuleML TC [1] are pleased to announce that LegalRuleML Core Specification Version 1.0 is now available for public review and comment.

LegalRuleML is designed to extend the RuleML standard ( with formal features specific to legal norms, guidelines, policies and reasoning. It defines a specification, expressed with XML-schema and Relax NG, that is able to represent the particularities of the legal normative rules with a rich, articulated, and meaningful markup language.

The TC has received 4 Statements of Use from Livio Robaldo, Swansea University, CSIRO Data61, and CirSFID-AlmaAI [2].

The Committee Specification now enters the 60-day public review that precedes the call for consent as an OASIS Standard. General information about this public review and previous reviews can be found in

The candidate specification and related files are available here:

LegalRuleML Core Specification Version 1.0
Committee Specification 02
06 April 2020

HTML (Authoritative):

Editable source:


For your convenience, OASIS provides a complete package of the specification document and any related files in ZIP distribution files. You can download the ZIP file at:

Public Review Period

The 60-day public review starts 17 June 2021 at 00:00 UTC and ends 14 August 2021 at 23:59 UTC.

This is an open invitation to comment. OASIS solicits feedback from potential users, developers and others, whether OASIS members or not, for the sake of improving the interoperability and quality of its technical work.

Comments may be submitted to the TC by any person through the use of the OASIS TC Comment Facility as explained in the instructions located via the button labeled “Send A Comment” at the top of the TC public home page, or directly at:

Comments submitted by TC non-members for this work and for other work of this TC are publicly archived and can be viewed at:

All comments submitted to OASIS are subject to the OASIS Feedback License, which ensures that the feedback you provide carries the same obligations at least as the obligations of the TC members. In connection with this public review of “LegalRuleML Core Specification Version 1.0 CS02,” we call your attention to the OASIS IPR Policy [3] applicable especially [4] to the work of this technical committee. All members of the TC should be familiar with this document, which may create obligations regarding the disclosure and availability of a member’s patent, copyright, trademark and license rights that read on an approved OASIS specification.

OASIS invites any persons who know of any such claims to disclose these if they may be essential to the implementation of the above specification, so that notice of them may be posted to the notice page for this TC’s work.

Additional information

[1] OASIS LegalRuleML TC

[2] Statements of Use:

Links to Statements of Use

  • Livio Robaldo
  • Swansea University (in conjunction with the Scottish Government’s Parliamentary Counsel Office and the University of Paris)
  • CSIRO Data61
  • Centro Di Ricerca Interdipartimentale (CirSFID) Alma Mater Research Institute for Human-Centered Artificial Intelligence



RF on Limited Terms Mode