IBGE / Values from a SIDRA table by variable, period and place

Values from one IBGE SIDRA table: pick the variables (ids from ibge-sidra-metadata, joined by |), the periods (-6 for the last six, or codes like 202601|202602, 2025 for annual tables) and the places (localidades: N1[all] Brazil, N3[all] every state, N3[33,35] Rio and Sao Paulo, N6[3304557] one municipality, N7[all] metro areas; each table supports only some levels, see its metadata). Example: table 1737, variable 63 (IPCA monthly %), periods -3, N1[all]. Answer: a list per variable with unit and series {localidade, serie: {period: "value"}}. A wrong table, variable or level fails cleanly at $0 (IBGE answers HTTP 500). Source: IBGE, Instituto Brasileiro de Geografia e Estatistica (Fonte: IBGE); cite IBGE when you show it. Free on looot: $0 per call.