Indicators›Support, resistance & structure›Fair Value Gap

GET/indicator/fvg

Fair Value Gap (FVG)

Category: Support, resistance & structure · Updated November 2026

The TAAPI.IO Fair Value Gap API returns value, top, bottom, bullish top values for the Fair Value Gap (FVG) 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/fvg`
Outputs	`value`, `top`, `bottom`, `bullishTop`, `bullishBottom`, `bullishTimestamp` and more
Markets	Binance, Binance Futures, Bybit, Gate.io, Kraken and US stocks
Timeframes	`1m` to `1w`
Delivery	REST, bulk and WebSocket

Get Fair Value Gap with one API call

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

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

Fair Value Gap API response

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

200 OK

{
  "value": [0],
  "top": [null],
  "bottom": [null],
  "bullishTop": [73668],
  "bullishBottom": [73400],
  "bullishTimestamp": [1787270400],
  "bullishCount": [10],
  "bearishTop": [74750],
  "bearishBottom": [74655.24],
  "bearishTimestamp": [1794200400],
  "bearishCount": [17],
  "timestamp": [1794218400]
}

This response can be null or empty when there is nothing to report for the requested candles, so handle that case in your code.

Field	Type	Description
`value`	number[]	Gap confirmed on this candle: 1 bullish, -1 bearish, 0 none
`top`	array	Upper edge of the gap confirmed on this candle (null if none)
`bottom`	array	Lower edge of the gap confirmed on this candle (null if none)
`bullishTop`	number[]	Upper edge of the most recent unfilled bullish gap (null if none)
`bullishBottom`	number[]	Lower edge of the most recent unfilled bullish gap (null if none)
`bullishTimestamp`	number[]	Timestamp of the middle candle of the most recent unfilled bullish gap
`bullishCount`	number[]	Number of unfilled bullish gaps
`bearishTop`	number[]	Upper edge of the most recent unfilled bearish gap (null if none)
`bearishBottom`	number[]	Lower edge of the most recent unfilled bearish gap (null if none)
`bearishTimestamp`	number[]	Timestamp of the middle candle of the most recent unfilled bearish gap
`bearishCount`	number[]	Number of unfilled bearish gaps
`timestamp`	integer[]	Unix time of each candle, in seconds

Fair Value Gap 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`
`threshold`	number	No	0	Minimum gap size as a percentage of the middle candle's close (0-100). Smaller gaps are ignored.
`fillMode`	string	No	wick	When an open gap counts as filled: `wick` (price touches the far edge) or `close` (a candle closes beyond it).
`results`	integer	No	1	Number of values to return, or `max`
`backtrack`	integer	No	0	Candles to skip from the most recent

What is Fair Value Gap?

A Fair Value Gap is a three-candle imbalance where the wicks of the first and third candles do not overlap, which leaves a price zone that traded one-sidedly. The endpoint returns gaps as they form as well as the most recent unfilled bullish and bearish zones.

Fair Value Gap formula

Output	Calculation
Bullish gap	Low of candle 3 above the high of candle 1
Bearish gap	High of candle 3 below the low of candle 1

How to read Fair Value Gap in your code

Signal	Meaning	Condition
New gap	Gap confirmed on this candle	`value` is 1 (bullish) or −1 (bearish)
Open bullish zone	Possible support	`bullishTop` to `bullishBottom`
Open bearish zone	Possible resistance	`bearishTop` to `bearishBottom`

Limitations: Many gaps fill without a useful reaction, and small ones are common, so use threshold to filter noise. Nothing on this page is financial advice.

Read Fair Value Gap from Python

Use backtrack=1 to read the result as of the last closed candle.

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

Get historical Fair Value Gap 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/fvg \
  -H "Authorization: Bearer YOUR_API_KEY" \
  --data-urlencode "exchange=binance" \
  --data-urlencode "symbol=BTCUSDT" \
  --data-urlencode "timeframe=1h" \
  --data-urlencode "results=100"

Get Fair Value Gap for multiple symbols

Combine Fair Value Gap 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": "fvg",
          "indicator": "fvg"
        },
        {
          "id": "rsi",
          "indicator": "rsi"
        }
      ]
    }
  ]
}'

Stream Fair Value Gap 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": "fvg",
  "exchange": "binance",
  "symbol": "BTCUSDT",
  "interval": "1m",
  "indicator": "fvg"
}

Fair Value Gap API FAQ

What does the Fair Value Gap API return?

It returns value, top, bottom, bullishTop, bullishBottom, bullishTimestamp, bullishCount, bearishTop, bearishBottom, bearishTimestamp, bearishCount, plus a timestamp for the request. Results are JSON.

Is the latest Fair Value Gap 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 Fair Value Gap settings can I change?

You can set threshold, fillMode. See the parameters table above for defaults.

Can I get Fair Value Gap 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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