Wilder's Smoothing
Category: Trend · Updated November 2026
The TAAPI.IO Wilder's Smoothing API returns real-time and historical values for the Wilder's Smoothing indicator as JSON, for crypto pairs and US stocks. Send an exchange, symbol and timeframe to get real-time or historical data, with no candles to download and no calculations to maintain.
| Spec | Value |
|---|---|
| Endpoint | GET https://v2.taapi.io/indicator/wilders |
| Outputs | value |
| Markets | Binance, Binance Futures, Bybit, Gate.io, Kraken and US stocks |
| Timeframes | 1m to 1w |
| Delivery | REST, bulk and WebSocket |
Get Wilder's Smoothing with one API call
This request returns Wilder's Smoothing for BTCUSDT on 1-hour Binance candles. Add your API key to run it here.
curl -G https://v2.taapi.io/indicator/wilders \ -H "Authorization: Bearer YOUR_API_KEY" \ --data-urlencode "exchange=binance" \ --data-urlencode "symbol=BTCUSDT" \ --data-urlencode "timeframe=1h"
import requests
resp = requests.get(
'https://v2.taapi.io/indicator/wilders',
headers={'Authorization': 'Bearer YOUR_API_KEY'},
params={'exchange': 'binance', 'symbol': 'BTCUSDT', 'timeframe': '1h'},
)
print(resp.json())const params = new URLSearchParams({"exchange": "binance", "symbol": "BTCUSDT", "timeframe": "1h"});
const res = await fetch(`https://v2.taapi.io/indicator/wilders?${params}`, {
headers: { Authorization: 'Bearer YOUR_API_KEY' },
});
console.log(await res.json());Wilder's Smoothing API response
This response came from the live API on 9 November 2026. Long lists are shortened here.
{
"value": [75020.96811475142],
"timestamp": [1794218400]
}| Field | Type | Description |
|---|---|---|
value | number[] | Wilder's Smoothing result |
timestamp | integer[] | Unix time of each candle, in seconds |
Wilder's Smoothing API parameters
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
exchange | string | Yes | — | binance, binancefutures, bybit, gateio, kraken or stocks |
symbol | string | Yes | — | Pair or ticker, e.g. BTCUSDT or AAPL |
timeframe | string | Yes | — | 1m 5m 15m 1h 4h 1d 1w |
period | number | No | — | Period |
results | integer | No | 1 | Number of values to return, or max |
backtrack | integer | No | 0 | Candles to skip from the most recent |
What is Wilder's Smoothing?
Wilder's Smoothing is the average used inside RSI and ATR. It is an EMA whose multiplier is 1 ÷ n, which makes it slower than the usual EMA of the same length.
Wilder's Smoothing formula
| Output | Calculation |
|---|---|
| Wilders | Previous + (close − previous) ÷ n |
How to read Wilder's Smoothing in your code
| Signal | Meaning | Condition |
|---|---|---|
| Price above average | Bullish bias | Close above value |
| Price below average | Bearish bias | Close below value |
| Slope | Direction of the trend | Latest value versus the previous one |
Limitations: A Wilder period of n behaves like an EMA of about 2n − 1, so periods do not map one to one. Nothing on this page is financial advice.
Compare the last two closed Wilder's Smoothing values
Use backtrack=1 to skip the candle still forming, and results=2 to compare the last two closed candles. Arrays run oldest first.
curl -G https://v2.taapi.io/indicator/wilders \ -H "Authorization: Bearer YOUR_API_KEY" \ --data-urlencode "exchange=binance" \ --data-urlencode "symbol=BTCUSDT" \ --data-urlencode "timeframe=1h" \ --data-urlencode "results=2" \ --data-urlencode "backtrack=1"
import requests
resp = requests.get(
'https://v2.taapi.io/indicator/wilders',
headers={'Authorization': 'Bearer YOUR_API_KEY'},
params={'exchange': 'binance', 'symbol': 'BTCUSDT', 'timeframe': '1h', 'results': 2, 'backtrack': 1},
)
data = resp.json()
prev, last = data['value']
print('value', prev, '->', last)
print('rising' if last > prev else 'falling or flat')Get historical Wilder's Smoothing values
Add results to return a series for backtesting or charting. The last element is the most recent candle.
curl -G https://v2.taapi.io/indicator/wilders \ -H "Authorization: Bearer YOUR_API_KEY" \ --data-urlencode "exchange=binance" \ --data-urlencode "symbol=BTCUSDT" \ --data-urlencode "timeframe=1h" \ --data-urlencode "results=100"
Get Wilder's Smoothing for multiple symbols
Combine Wilder's Smoothing with other indicators in one request. Each exchange, symbol and timeframe combination is one construct: Basic allows 1 per request, Pro 3 and Expert 10.
curl -X POST https://v2.taapi.io/bulk \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"constructs": [
{
"id": "btc_1h",
"exchange": "binance",
"symbol": "BTCUSDT",
"timeframe": "1h",
"indicators": [
{
"id": "wilders",
"indicator": "wilders"
},
{
"id": "rsi",
"indicator": "rsi"
}
]
}
]
}'Stream Wilder's Smoothing in real time
Subscribe over WebSocket to receive new values every 5 seconds while the candle is forming. Streaming supports 1m, 5m, 15m and 1h, and uses interval where REST uses timeframe.
{
"type": "subscribe",
"id": "wilders",
"exchange": "binance",
"symbol": "BTCUSDT",
"interval": "1m",
"indicator": "wilders"
}Wilder's Smoothing API FAQ
What does the Wilder's Smoothing API return?
It returns value, plus a timestamp for the request. Results are JSON.
Is the latest Wilder's Smoothing value final?
No. The newest value belongs to the candle still forming and can change until it closes. Add backtrack=1 to read the last closed candle.
Which Wilder's Smoothing settings can I change?
You can set period. See the parameters table above for defaults.
Can I get Wilder's Smoothing for US stocks?
Yes. Use exchange=stocks with a ticker such as AAPL. US stocks are included on the Pro plan and above.
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