Zero Lag EMA (ZLEMA)
Category: Trend · Updated November 2026
The TAAPI.IO ZLEMA API returns real-time and historical values for the Zero Lag EMA 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/zlema |
| Outputs | value |
| Markets | Binance, Binance Futures, Bybit, Gate.io, Kraken and US stocks |
| Timeframes | 1m to 1w |
| Delivery | REST, bulk and WebSocket |
Get ZLEMA with one API call
This request returns ZLEMA for BTCUSDT on 1-hour Binance candles. Add your API key to run it here.
curl -G https://v2.taapi.io/indicator/zlema \ -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/zlema',
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/zlema?${params}`, {
headers: { Authorization: 'Bearer YOUR_API_KEY' },
});
console.log(await res.json());ZLEMA API response
This response came from the live API on 9 November 2026. Long lists are shortened here.
{
"value": [74108.49783178588],
"timestamp": [1794218400]
}| Field | Type | Description |
|---|---|---|
value | number[] | ZLEMA result |
timestamp | integer[] | Unix time of each candle, in seconds |
ZLEMA 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 ZLEMA?
The Zero Lag EMA, from John Ehlers and Ric Way, removes part of the lag by running an EMA on a price series adjusted with its own momentum.
ZLEMA formula
| Output | Calculation |
|---|---|
| Adjusted price | Close + (close − close (n−1) ÷ 2 ago) |
| ZLEMA | EMA(adjusted price, n) |
How to read ZLEMA 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: The name overstates it: lag is reduced, not removed, and noise is amplified. Nothing on this page is financial advice.
Compare the last two closed ZLEMA 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/zlema \ -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/zlema',
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 ZLEMA 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/zlema \ -H "Authorization: Bearer YOUR_API_KEY" \ --data-urlencode "exchange=binance" \ --data-urlencode "symbol=BTCUSDT" \ --data-urlencode "timeframe=1h" \ --data-urlencode "results=100"
Get ZLEMA for multiple symbols
Combine ZLEMA 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": "zlema",
"indicator": "zlema"
},
{
"id": "rsi",
"indicator": "rsi"
}
]
}
]
}'Stream ZLEMA 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": "zlema",
"exchange": "binance",
"symbol": "BTCUSDT",
"interval": "1m",
"indicator": "zlema"
}ZLEMA API FAQ
What does the ZLEMA API return?
It returns value, plus a timestamp for the request. Results are JSON.
Is the latest ZLEMA 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 ZLEMA settings can I change?
You can set period. See the parameters table above for defaults.
Can I get ZLEMA 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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