Monitor a portfolio of legal citations over time: get the version timeline (status and validity dates) of up to 100 French (LEGI) or EU (CELEX/ELI) article references in a single x402 settlement, to detect when any of them last changed. Covers the 12 major French codes (civil, labor, commercial, penal, tax/CGI, social-security, monetary & financial, environmental, IP, insurance, consumer) plus the Data Protection Act, and key EU acts (GDPR, eIDAS, e-Commerce, DSM copyright, DSA, DMA, AI Act, MiCA, NIS2). No account, no key.