Verify a US college or university is accredited and get a diploma-mill verdict. Give one of name, opeid, ipeds or domain

Verify a US college or university is accredited and get a diploma-mill verdict. Give one of name, opeid, ipeds or domain plus an optional claimed_accreditor; get back an is_accredited flag, the recognized accreditors, a diploma_mill_flag with weighted signals, operating status, a confidence and cited sources. Deterministic, no LLM.