Answer
Price stability (Art. 127 TFEU); it is independent (Art. 130 TFEU) and based in Frankfurt.
💡Became an EU institution under the Lisbon Treaty; heads the Eurosystem.
Consolidated TFEU (EUR-Lex) — eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:12016E/TXT