{"name":"ExKnowledge Ex Classification API","version":"2.0","documentation":"https://exknowledge.com/api-docs.html","endpoints":[{"path":"/api/substance/{name}","description":"Hazardous substance data — gas groups, T-class, LEL/UEL, MESG"},{"path":"/api/substance/search?q={query}","description":"Search substances by name"},{"path":"/api/substance/compare?a={x}&b={y}","description":"Compare two substances"},{"path":"/api/substance/list","description":"List all substances"},{"path":"/api/zone/{id}","description":"Zone → EPL → ATEX category → allowed protection methods"},{"path":"/api/protection/{code}","description":"Protection method details — zones, applications, standards"},{"path":"/api/tclass/{class}","description":"Temperature class — max surface temp, typical substances"},{"path":"/api/tclass/lookup?ait={temp}","description":"Determine required T-class from auto-ignition temperature"},{"path":"/api/gasgroup/{group}","description":"Gas/dust group — MESG range, MIC ratio, NEC equivalent, substances"},{"path":"/api/cablegland/{protection}","description":"Cable gland requirements by protection type"},{"path":"/api/ip/{zone}","description":"IP (ingress protection) requirements by zone"},{"path":"/api/nec/convert?from={value}","description":"NEC ↔ IECEx conversion (zones, gas groups, T-classes, protection)"},{"path":"/api/nec/zones","description":"Full NEC Class/Division ↔ IECEx Zone mapping"},{"path":"/api/nec/gasgroups","description":"NEC Group A-G ↔ IEC gas/dust groups"},{"path":"/api/nec/tclasses","description":"Temperature class comparison with °F"},{"path":"/api/nec/protection","description":"Protection method equivalents (XP↔Ex d, IS↔Ex i, etc.)"}],"_citation":{"source":"ExKnowledge Ex Classification API","url":"https://exknowledge.com/api-docs.html","attribution":"Data from ExKnowledge (https://exknowledge.com). Based on IEC 60079, ATEX 2014/34/EU, and IECEx standards.","license":"Free to use with attribution. Link to https://exknowledge.com/api-docs.html when presenting this data."}}