Money Supply API
How fast the money in each economy is growing — narrow money (M1) and broad money (M3) growth as an API, live from the OECD's official monetary statistics, no key. The money supply is the total stock of money in circulation: M1 is cash and instantly-spendable deposits (the transactional money that turns over fast), M3 is M1 plus savings and near-money. How fast it grows is one of the oldest macro signals there is — money growth running well ahead of the economy is the classic fuel for inflation and asset-price booms, while money contracting flags a credit squeeze. Central banks, bond traders and macro investors watch the year-on-year money-growth rate to read the liquidity tide. The OECD publishes a seasonally-adjusted monetary-aggregate index for each economy; this API turns it into the number people actually use — the year-on-year and month-on-month growth of M1 and M3. The board endpoint ranks every economy by its broad-money (M3) growth, with narrow money (M1) alongside, so you can see where liquidity is expanding fastest and where it is drying up. The narrow endpoint ranks by M1 growth — narrow money turns over fastest and tends to lead. The country endpoint gives one economy's M1 and M3 growth, year-on-year and month-on-month. Each reading carries its own period and discontinued series are excluded, so the board is genuinely current. The money-supply / monetary-growth cut — distinct from the central-bank policy-rate APIs (the price of money, not its quantity), the inflation board, and the generic multi-provider data aggregator. Figures are monthly, in percent.
api.oanor.com/moneysupply-api
