"Tackling a Major Climate Threat, " joint research with Carbon Containment Lab on Superpollutants
No hidden incentives. Just science.
Explore the platform
"Calyx Global's deep expertise in GHG integrity and safeguards gives us confidence in our nature-based solutions project evaluations. They help us identify quality opportunities and navigate risks from the very beginning of the development process."



Decades of practical experience across 25+ project types
Guided by people, not black-box algorithms
Direct access to our experts, so you get insight, not just information
Photos from left to right: Co-Founder Donna Lee visiting a REDD project in Cambodia, Co-Founder Duncan Van Bergen at Ecosperity Week in Singapore, Chief Scientist Dr. Deborah Lawrence at New York Climate Week
With the largest number of expert-led ratings from the broadest set of credit types, you'll have more opportunities to find high quality credits.
"We value Calyx's rigorous, evidence-first approach to ratings and exceptional client service."
"Of the rating agencies assessed, Calyx stands out as being more conservative, with a more reliable way of assessing carbon credit quality."
See CMW study highlights
"The ratings and reports of Calyx Global are a great supplement to our own due diligence process. We value the expertise that the Calyx Global team brings."
De-risk early investments with clear analysis and rating outlooks for early-stage projects.
A data-driven decision tool that helps you identify and overcome the most important quality risks - so you can make informed early-stage decisions, faster.
Find credits that deliver real impact. Our independent, science-backed ratings cut through complexity and spotlight the highest-integrity credits.
From custom analyses to any question you have about the market: Our experts stand ready to help you succeed.
Reach out to learn more about any of our solutions
Contact us
"We needed a trusted, non-conflicted advisor to help us navigate the volatile landscape of options. The deep expertise and objectivity of the Calyx team, as well as their ability to easily translate very technical insider baseball and nuance to general and executive audiences put us at ease that we could make wise decisions with confidence that followed our rigorous internal guidelines developed by diverse stakeholders."
We only succeed when you succeed
Our revenue comes from subscribers, not transaction volume or developer-paid ratings.
See how we put independence into practice