Lints German property-ad HTML for the energy-certificate fields GEG Section 87 demands, and flags an efficiency class that contradicts the kWh value. Runs entirely in your browser — nothing is uploaded.
Full version: scans every listing template in the workspace or the CI feed in one run and writes a dated audit record you keep as proof of what each ad said on the day it went live.
$29 once · one licence key per person or team seat · A Bedarfsausweis with an on-site visit runs about €300–€500 in 2026, and the Energieberater never opens your template.
Same engine as the VS Code extension, byte for byte.