Argus, a global energy and commodity price reporting agency, has introduced the Argus Japan Korea Low-Carbon Ammonia Benchmark (JKLAB) index to facilitate trading of low-carbon ammonia products in northeast Asia. This index focuses on the all-in cost of low-carbon liquid ammonia produced in the US Gulf coast and delivered to key markets in South Korea and Japan. The index is based on autothermal reformer ammonia production with carbon capture and storage, meeting the carbon intensity thresholds set by Japan and South Korea. The use of liquid ammonia as a vector for transporting hydrogen has gained traction in Northeast Asia, with power generation companies successfully trialing the substitution of coal with ammonia. To address the lack of a clear market reference for low-carbon ammonia, the Argus JKLAB index offers a cost-based approach to assist in offtake negotiations, providing a common reference for both buyers and producers to structure long-term supply contracts. By introducing the Argus JKLAB index, Argus aims to enhance market transparency and facilitate the transition to low-carbon energy solutions in the region. This initiative is part of a broader effort to support the development of a sustainable hydrogen economy, where market participants can navigate the complexities of pricing and supply chain management more effectively. Argus has a long-standing reputation for providing transparency in commodity markets, and the introduction of the JKLAB index further solidifies its commitment to empowering market participants with reliable market intelligence. The index complements Argus' existing suite of ammonia spot price assessments and hydrogen production cost analysis, offering a comprehensive view of the evolving energy landscape.