One of the important City Protocol objectives is to produce high-quality documents that contribute to the process of improving and optimizing city transformation (i.e., the design, construction, operation, and interaction modalities for cities and their constituent processes and functions). We anticipate that CPAs, in the form of technical or methodological information, guidance or suggested approach documents, will fall into one of the following categories (more document categories may be necessary at some point in the future):
- Working Drafts (CPWD). All CPAs begin as working drafts for discussion and evaluation. They are work in progress within a TAFT that, once completed, will be submitted to the CPA Editor to enter the CPA review process. CPWD's may also be submitted from an external organization, but it is encouraged that at least one TAFT review the submission prior to approval as a CPA.
- Informational Agreements (CPA-I). Documents meant to inform the City Protocol community about useful concepts and results.
- Proposed Recommendation Agreements (CPA-PR). Documents meant to provide technical and methodological details about particular guidelines, policies, practices, or other approaches for city transformation.
- Recommendation Agreements (CPA-R). Documents containing technical and methodological details about particular guidelines, policies, practices, or other approaches for city transformation that have proved to be valuable to multiple cities in multiple contexts (geography, climate, culture, etc.).