The objective of the Common Legal Drafting Rules for the Portuguese-speaking countries and regions project is clear: the determination of common rules and standards for legal drafting in the Portuguese-speaking legal systems. The idea is to take advantage of the common basis present in all the legal systems with a Lusophone basis to, in an academic dialogue between researchers and specialists from each system, to agree on general standards applicable to all the Portuguese-speaking countries and regions. Several outcomes are possible. The writing and publishing of the resulting text may play the role of a “reference book regarding the legislation drafting in the Lusophone space”. But is this academic agreement destined to be some kind of soft law or may legal drafting rules be established through an international convention? Is a decision by the Community of Portuguese-speaking Countries (CPLP) in this area possible? What is the international law framework for this matter?