Sequential Countdown Indicator (based on DeMark Methodology)

The Sequential Countdown Indicator is a technical analysis tool designed to identify potential reversal points in financial markets such as stocks and cryptocurrencies. It is inspired by the methodology developed by Tom DeMark, a well-known trader and analyst, and is among the most popular tools used for detecting trend exhaustion.

This indicator uses a systematic approach to analyze price movements and highlight areas where trends may be weakening. By identifying moments of possible market turning points through a structured countdown process, it provides actionable signals for traders looking to optimize their entry and exit points. When used correctly, the Sequential Countdown Indicator can improve trading precision and risk management by flagging potential reversals before they occur.

Visualizing the Sequential Countdown Indicator

The indicator works through a series of numbered and color-coded countdown phases, usually ranging from 1 to 13. These phases are based on specific price action rules comparing current and past price bars. A completed countdown phase may indicate that an asset has reached a zone of excessive buying or selling pressure, suggesting a potential pause or reversal in the prevailing trend.

TAAPI.IO provides real-time access to the Sequential Countdown Indicator for popular crypto trading pairs (e.g., on Binance) and major US stocks. Use our real-time data to power your live strategies or rely on our historical data for robust backtesting. This indicator can be integrated into your algorithmic strategies or used manually for discretionary trading decisions.

Note: This indicator is based on the methodology originally introduced by Tom DeMark. “TD Sequential” is a registered trademark of Market Studies, LLC. TAAPI.IO is not affiliated with or endorsed by Tom DeMark or Market Studies, LLC, and this implementation is an independent interpretation of the publicly known methodology.

Get started for Free

The best way to access the Sequential Countdown Indicator is with our Pro and Expert plans.

Test drive TAAPI.IO risk-free with our 7-day free trial on all paid plans! We’re confident you’ll be hooked for the long haul!

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    From: 14.99 / month with a 7-day free trialMost popular

    • All indicators
    • 150.000 calls / day
    • US Stocks – real-time and historical
    • Indexes (SPY, QQQ, DJIA)
    • Crypto data real-time and historical
    • 3 symbols per API request
    • Historical data 300 candles back using results
    • Priority support

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  • Sale!

    Expert

    From: 29.99 / month

    • All indicators
    • 400.000 calls / day
    • US Stocks – real-time and historical
    • Indexes (SPY, QQQ, DJIA)
    • Crypto data real-time and historical
    • 10 symbols per API request
    • Historical data 2000 candles back using results
    • Priority support
    Select options

Get started with the tdsequential

Simply make an HTTPS [GET] request or call in your browser:

			[GET] https://api.taapi.io/tdsequential?secret=MY_SECRET&exchange=binance&symbol=BTC/USDT&interval=1h
		

API response

The tdsequential endpoint returns a JSON response like this:

			{
  "buySetupIndex": 1,
  "sellSetupIndex": 0,
  "buyCoundownIndex": 0,
  "sellCoundownIndex": 7,
  "countdownIndexIsEqualToPreviousElement": true,
  "sellSetup": true,
  "buySetup": false,
  "sellSetupPerfection": true,
  "buySetupPerfection": false,
  "bearishFlip": true,
  "bullishFlip": false,
  "TDSTBuy": 41950,
  "TDSTSell": 0,
  "countdownResetForTDST": false
}
		
Example response from TAAPI.IO when querying tdsequential endpoint.

API parameters

secret
Required String
The secret which is emailed to you when you request an API key.
exchange
Required String
The exchange you want to calculate the indicator from: binance, binancefutures or one of our supported exchanges. For other crypto / stock exchanges, please refer to our Client or Manual integration methods.
symbol
Required String
Symbol names are always uppercase, with the coin separated by a forward slash and the market: COIN/MARKET. For example: BTC/USDT Bitcoin to Tether, or LTC/BTC Litecoin to Bitcoin...
interval
Required String
Interval or time frame: We support the following time frames: 1m, 5m, 15m, 30m, 1h, 2h, 4h, 12h, 1d, 1w. So if you're interested in values on hourly candles, use interval=1h, for daily values use interval=1d, etc.
backtrack
Optional Integer
The backtrack parameter removes candles from the data set and calculates the tdsequential value X amount of candles back. So, if you are fetching the tdsequential on the hourly and you want to know what the tdsequential was 5 hours ago, set backtrack=5. The default is 0.
chart
Optional String
The chart parameter accepts one of two values: candles or heikinashi. candles is the default, but if you set this to heikinashi, the indicator values will be calculated using Heikin Ashi candles. Note: Pro & Expert Plans only.
addResultTimestamp
Optional Boolean
true or false. Defaults to false. By setting to true the API will return a timestamp with every result (real-time and backtracked) to which candle the value corresponds. This is especially helpful when requesting a series of historical values using the results parameter.
fromTimestamp
New Optional String
The start of the time range in Unix epoch time. For example: 1685577600
toTimestamp
New Optional String
The end of the time range in Unix epoch time. For example: 1731456000 If you only use fromTimestamp, the API will return all results from that time until present.
gaps
Optional Boolean
true or false. Defaults to true. By setting to false, the API will ensure that there are no candles missing. This often happens on lower timeframes in thin markets. Gaps will be filled by a new candle with 0 volume, and OHLC set the the close price of the latest candle with volume.
results
New Optional String
number or max. Use this parameter to access historical values on the past X candles until the most recent candle. Use max to return all available historical values. Returns an array with the oldest value on top and most recent value returned the last.

More examples

Let's say you want to know the tdsequential value on the last closed candle on the 30m timeframe. You are not interest in the real-time value, so you use the backtrack=1 optional parameter to go back 1 candle in history to the last closed candle.

				[GET] https://api.taapi.io/tdsequential?secret=MY_SECRET&exchange=binance&symbol=BTC/USDT&interval=30m&backtrack=1
			
Get tdsequential values on each of the past X candles in one call

Let's say you want to know what the tdsequential daily value was each day for the previous 10 days. You can get this returned by our API easily and efficiently in one call using the results=10 parameter:

				[GET] https://api.taapi.io/tdsequential?secret=MY_SECRET&exchange=binance&symbol=BTC/USDT&interval=1d&results=10
			

Looking for even more integration examples in different languages like NodeJS, PHP, Python, Curl or Ruby? Continue to [GET] REST - Direct documentation.