Prompt hosts create climate challenges that are related to elements within the 5 climate domains (Earth State Systems, World System Registries, Climate Action Certification, Climate Markets, Climate Finance). Prompt Hosts are expected to provide participants with robust knowledge needed and technical guidance both before and during the Collabathon. This could be in the form of training, providing background information, subject matter expertise, data sharing, code etc. Ideal Prompt Hosts are two complementary entities, a climate knowledge, and a technical software partner. Startups, companies and research organizations that specialize in a relevant technology or climate domain can host a prompt to provide technical expertise, knowledge, data and mentors to collabathon teams.