GET/indicator/hammer

Hammer Candlestick Pattern

Category: Candlestick patterns · Updated November 2026

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

Get Hammer with one API call

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

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

Hammer 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[]	Hammer result
`timestamp`	integer[]	Unix time of each candle, in seconds

Hammer 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 Hammer?

Hammer is a 1-candle bullish Japanese candlestick pattern. A small body at the top of the range with a lower wick at least twice its size, after a decline. It shows buyers rejecting lower prices. Most traders wait for confirmation on the next candle.

How to read Hammer 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 Hammer 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/hammer \
  -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/hammer',
    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 Hammer 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/hammer \
  -H "Authorization: Bearer YOUR_API_KEY" \
  --data-urlencode "exchange=binance" \
  --data-urlencode "symbol=BTCUSDT" \
  --data-urlencode "timeframe=1h" \
  --data-urlencode "results=100"

Get Hammer for multiple symbols

Combine Hammer 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": "hammer",
          "indicator": "hammer"
        },
        {
          "id": "rsi",
          "indicator": "rsi"
        }
      ]
    }
  ]
}'

Stream Hammer 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": "hammer",
  "exchange": "binance",
  "symbol": "BTCUSDT",
  "interval": "1m",
  "indicator": "hammer"
}

Hammer API FAQ

What does the Hammer API return?

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

What do the Hammer values mean?

0 means no pattern. A non-zero value means it was detected and is a positive number (bullish). 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 Hammer 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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