CAD Trust is the Chia-Network "cadt" software designed to be self-hosted. There is no unauthenticated public API. To use CAD Trust data you must either:
Self-host a cadt node, or
Arrange a private partnership for API access via https://climateactiondata.org/how-to-connect/
Details
This function is a placeholder that errors with guidance. CAD Trust support is deferred to carbondata v0.2.0 once CAD Trust offers a stable public endpoint.
See also
Other voluntary markets:
co2_offsets_db(),
co2_vrod()