Indicators›Candlestick patterns›Three Black Crows

GET/indicator/3blackcrows

Three Black Crows Candlestick Pattern

Category: Candlestick patterns · Updated November 2026

The TAAPI.IO Three Black Crows API returns whether the pattern appeared on each candle for the Three Black Crows candlestick pattern 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/3blackcrows`
Outputs	`value`
Markets	Binance, Binance Futures, Bybit, Gate.io, Kraken and US stocks
Timeframes	`1m` to `1w`
Delivery	REST, bulk and WebSocket

Get Three Black Crows with one API call

This request returns Three Black Crows for BTCUSDT on 1-hour Binance candles. Add your API key to run it here.

curl -G https://v2.taapi.io/indicator/3blackcrows \
  -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/3blackcrows',
    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/3blackcrows?${params}`, {
  headers: { Authorization: 'Bearer YOUR_API_KEY' },
});
console.log(await res.json());

Three Black Crows API response

This response came from the live API on 9 November 2026. Long lists are shortened here.

200 OK

{
  "value": [0],
  "timestamp": [1794218400]
}

Field	Type	Description
`value`	number[]	Three Black Crows result
`timestamp`	integer[]	Unix time of each candle, in seconds

Three Black Crows 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 Three Black Crows?

Three Black Crows is a 3-candle bearish Japanese candlestick pattern. Three long black candles in a row, each opening within the previous body and closing near its low. It suggests sustained selling after an advance.

How to read Three Black Crows in your code

Signal	Meaning	Condition
Detected	Pattern completed on this candle	`value` < 0
Not detected	No pattern on this candle	`value` equals 0

Limitations: Candlestick patterns describe what already happened and are more meaningful alongside trend and volume. On 24/7 crypto markets there are few real gaps between candles, so gap-based patterns occur less often than on stocks. Nothing on this page is financial advice.

Detect Three Black Crows with Python

Check the last closed candle by adding backtrack=1. A pattern on the candle still forming can disappear before it closes.

curl -G https://v2.taapi.io/indicator/3blackcrows \
  -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/3blackcrows',
    headers={'Authorization': 'Bearer YOUR_API_KEY'},
    params={'exchange': 'binance', 'symbol': 'BTCUSDT', 'timeframe': '1h', 'results': 2, 'backtrack': 1},
)
data = resp.json()
signal = data['value'][-1]

if signal > 0:
    print('Bullish pattern on the last closed candle')
elif signal < 0:
    print('Bearish pattern on the last closed candle')
else:
    print('No pattern')

Get historical Three Black Crows 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/3blackcrows \
  -H "Authorization: Bearer YOUR_API_KEY" \
  --data-urlencode "exchange=binance" \
  --data-urlencode "symbol=BTCUSDT" \
  --data-urlencode "timeframe=1h" \
  --data-urlencode "results=100"

Get Three Black Crows for multiple symbols

Combine Three Black Crows 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.

POST/bulk

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": "3blackcrows",
          "indicator": "3blackcrows"
        },
        {
          "id": "rsi",
          "indicator": "rsi"
        }
      ]
    }
  ]
}'

Stream Three Black Crows 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.

WSSwss://v2.taapi.io/streaming

{
  "type": "subscribe",
  "id": "3blackcrows",
  "exchange": "binance",
  "symbol": "BTCUSDT",
  "interval": "1m",
  "indicator": "3blackcrows"
}

Three Black Crows API FAQ

What does the Three Black Crows API return?

It returns value, plus a timestamp for the request. Results are JSON.

What do the Three Black Crows values mean?

0 means no pattern. A non-zero value means it was detected and is a negative number (bearish). TA-Lib patterns commonly return 100 or −100, and some return other values such as 80 or −80, so check the sign and not an exact number.

Can I get Three Black Crows 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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