Returns the full published history of a Brazilian reference rate, so you can put macro context next to a bond's own rate history without leaving this server. Rates use the same decimal-fraction convention as every other tool here (`'0.1425'` = 14.25% a.a.), so values compare with `price_history_series` directly, with no unit conversion.
Available `indicator` values:
- `selic-target` — the **meta Selic** set by the Copom, from the official Banco Central rate history.
For `selic-target` this is EVERY decision since the regime began in March 1999, including the meetings that **held** the rate (`outcome: 'hold'`, `changeBps: 0`). Read `outcome` to tell them apart: `up`, `down`, `hold`, or `start` for the single opening entry. Count only `up`/`down` when the user asks how many times the rate actually moved.
Two fields are easy to misread. `meetingNumber` is NOT unique: until 2003 a meeting could set a `bias` ('alta'/'baixa') authorizing the Banco Central president to move the target before the next meeting, alone, and those decisions carry `monocratic: true` under the authorizing meeting's number — `effectiveDate` is the key. And `effectiveRate` is the Selic actually realized over the period, a different quantity from the target in `rate`; it is null while a period is still in force.
The meta Selic is one of several conditions behind a bond's traded rate; it does not by itself set the rate or price of any Treasury bond, and a move in the same window is not evidence that one caused the other. This is a factual series, not a forecast, a market interpretation, or a recommendation.
Returns: `{ series, unit, source: { id, publisher }, items: [{ decisionDate, effectiveDate, rate, previousRate, changeBps, outcome, meetingNumber, extraordinary, monocratic, bias, effectiveRate }] }`, ascending by `effectiveDate`.