Support Line
Category: Support, resistance & structure · Updated November 2026
The TAAPI.IO Support Line API returns support line price, lows values for the Support Line 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/supportline |
| Outputs | supportLinePrice, lows |
| Markets | Binance, Binance Futures, Bybit, Gate.io, Kraken and US stocks |
| Timeframes | 1m to 1w |
| Delivery | REST, bulk and WebSocket |
Get Support Line with one API call
This request returns Support Line for BTCUSDT on 1-hour Binance candles. Add your API key to run it here.
curl -G https://v2.taapi.io/indicator/supportline \ -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/supportline',
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/supportline?${params}`, {
headers: { Authorization: 'Bearer YOUR_API_KEY' },
});
console.log(await res.json());Support Line API response
This response came from the live API on 9 November 2026. Long lists are shortened here.
{
"supportLinePrice": 83475.54857142858,
"lows": [{"timestamp": 1790827200, "low": 83754.01}],
"timestamp": [1794218400]
}| Field | Type | Description |
|---|---|---|
supportLinePrice | number | Support line price |
lows | object[] | Lows |
timestamp | integer[] | Unix time of each candle, in seconds |
Support Line 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 |
results | integer | No | 1 | Number of values to return, or max |
backtrack | integer | No | 0 | Candles to skip from the most recent |
What is Support Line?
This endpoint returns one support line price along with the lows that define it, which is convenient for alerts and simple breakdown rules. Always compare it with the current price, since the line can already have been broken.
Support Line formula
| Output | Calculation |
|---|---|
| Support | Current lower level from recent price structure |
How to read Support Line in your code
| Signal | Meaning | Condition |
|---|---|---|
| Level | Current support | supportLinePrice |
| Touch points | Lows that define the line | lows |
| Breakdown | Level broken | Close below supportLinePrice |
Limitations: A single level simplifies a market that usually has several. Use supportresistance for a list. Nothing on this page is financial advice.
Read Support Line from Python
Use backtrack=1 to read the result as of the last closed candle.
curl -G https://v2.taapi.io/indicator/supportline \ -H "Authorization: Bearer YOUR_API_KEY" \ --data-urlencode "exchange=binance" \ --data-urlencode "symbol=BTCUSDT" \ --data-urlencode "timeframe=1h" \ --data-urlencode "backtrack=1"
import requests
resp = requests.get(
'https://v2.taapi.io/indicator/supportline',
headers={'Authorization': 'Bearer YOUR_API_KEY'},
params={'exchange': 'binance', 'symbol': 'BTCUSDT', 'timeframe': '1h', 'backtrack': 1},
)
data = resp.json()
print(data['supportLinePrice'])Get historical Support Line 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/supportline \ -H "Authorization: Bearer YOUR_API_KEY" \ --data-urlencode "exchange=binance" \ --data-urlencode "symbol=BTCUSDT" \ --data-urlencode "timeframe=1h" \ --data-urlencode "results=100"
Get Support Line for multiple symbols
Combine Support Line 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": "supportline",
"indicator": "supportline"
},
{
"id": "rsi",
"indicator": "rsi"
}
]
}
]
}'Stream Support Line 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": "supportline",
"exchange": "binance",
"symbol": "BTCUSDT",
"interval": "1m",
"indicator": "supportline"
}Support Line API FAQ
What does the Support Line API return?
It returns supportLinePrice, lows, plus a timestamp for the request. Results are JSON.
Is the latest Support Line 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.
Can I get Support Line 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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