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Relative Strength Index API

Technical Indicators

Relative Strength Index

Edit any parameter, add optional ones, then hit Try it, then switch the response between Formatted and Raw.

Momentum oscillator bounded between 0 and 100 that measures the speed and magnitude of recent price changes to flag overbought and oversold conditions.

>_ Endpoint:
https://financialmodelingprep.com/stable/technical-indicators/rsi?symbol=AAPL&periodLength=10&timeframe=1min&apikey=YOUR_API_KEY

Parameters

( * ) Required
Query Parameter
Type
Value
symbol *
string
periodLength *
number
timeframe *
string
from
date
to
date
ResponseSample
1 result
Date
Open
High
Low
Close
Volume
Rsi
2026-07-30 00:00:00
333.13
334.48
329.59
332.39
29207295
59.55175118203601