The open-source reference implementation of value stream methodology applied to emissions compliance. Implements EU Implementing Regulation 2023/1773, Delegated Regulation (EU) 2025/2551, and COM(2025) 783.
About vsmcodex
The vsmcodex is a methodology engine that calculates EU CBAM-compliant emissions reports against the Commission's regulatory framework. It is built as a citation-grade open-source library that auditors, regulators, exporters, and academic researchers can read, verify, fork, and cite.
The compound mark stands for Value Stream Methodology Codex — an extension of Sustainable Value Stream Mapping (Faulkner & Badurdeen, 2014) applied to embedded-carbon analysis on production lines. The Codex is the regulatory-compliance descendant of that academic lineage.
Licence & Governance
Apache 2.0. Free to use, distribute, modify. Trademark separately reserved. Maintained by Verusum Ltd as benevolent dictator with a Contributor Licence Agreement (Apache Software Foundation Individual and Corporate templates, adopted verbatim). The foundation-donation pathway is preserved for Year 3 and beyond if and when the project reaches scale.
Public launch: 1 September 2026
The repository, the specification, the reference Python implementation, and worked examples will be available from that date. A 4-week pre-launch private beta runs 1 August through 1 September 2026 with the first contributor cohort.
maintained by Verusum - United Kingdom - Licensed Apache 2.0 © 2026