Accelerator Oscillator
Category: Momentum · Updated November 2026
The TAAPI.IO Accelerator Oscillator API returns real-time and historical values for the Accelerator Oscillator 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/accosc |
| Outputs | value |
| Markets | Binance, Binance Futures, Bybit, Gate.io, Kraken and US stocks |
| Timeframes | 1m to 1w |
| Delivery | REST, bulk and WebSocket |
Get Accelerator Oscillator with one API call
This request returns Accelerator Oscillator for BTCUSDT on 1-hour Binance candles. Add your API key to run it here.
curl -G https://v2.taapi.io/indicator/accosc \ -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/accosc',
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/accosc?${params}`, {
headers: { Authorization: 'Bearer YOUR_API_KEY' },
});
console.log(await res.json());Accelerator Oscillator API response
This response came from the live API on 9 November 2026. Long lists are shortened here.
{
"value": [-147.64088235294037],
"timestamp": [1794218400]
}| Field | Type | Description |
|---|---|---|
value | number[] | Accelerator Oscillator result |
timestamp | integer[] | Unix time of each candle, in seconds |
Accelerator Oscillator 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 |
lengthSlow | integer | No | 34 | Length slow |
lengthFast | integer | No | 5 | Length fast |
results | integer | No | 1 | Number of values to return, or max |
backtrack | integer | No | 0 | Candles to skip from the most recent |
What is Accelerator Oscillator?
The Accelerator Oscillator, created by Bill Williams, measures whether the driving force behind price is speeding up or slowing down. It takes the Awesome Oscillator and subtracts a 5-period average of itself, so it tends to change direction before the Awesome Oscillator does.
Accelerator Oscillator formula
| Output | Calculation |
|---|---|
| AO | SMA(median price, 5) − SMA(median price, 34) |
| AC | AO − SMA(AO, 5) |
How to read Accelerator Oscillator in your code
| Signal | Meaning | Condition |
|---|---|---|
| Acceleration up | Upward momentum is building | value rising versus the previous candle |
| Acceleration down | Downward momentum is building | value falling versus the previous candle |
| Zero cross | Acceleration changed sign | value crosses 0 |
Limitations: It reacts to small changes in a moving-average difference, so it is noisy on short timeframes. Nothing on this page is financial advice.
Compare the last two closed Accelerator Oscillator values
Use backtrack=1 to skip the candle still forming, and results=2 to compare the last two closed candles. Arrays run oldest first.
curl -G https://v2.taapi.io/indicator/accosc \ -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/accosc',
headers={'Authorization': 'Bearer YOUR_API_KEY'},
params={'exchange': 'binance', 'symbol': 'BTCUSDT', 'timeframe': '1h', 'results': 2, 'backtrack': 1},
)
data = resp.json()
prev, last = data['value']
print('value', prev, '->', last)
print('rising' if last > prev else 'falling or flat')Get historical Accelerator Oscillator 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/accosc \ -H "Authorization: Bearer YOUR_API_KEY" \ --data-urlencode "exchange=binance" \ --data-urlencode "symbol=BTCUSDT" \ --data-urlencode "timeframe=1h" \ --data-urlencode "results=100"
Get Accelerator Oscillator for multiple symbols
Combine Accelerator Oscillator 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": "accosc",
"indicator": "accosc"
},
{
"id": "rsi",
"indicator": "rsi"
}
]
}
]
}'Stream Accelerator Oscillator 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": "accosc",
"exchange": "binance",
"symbol": "BTCUSDT",
"interval": "1m",
"indicator": "accosc"
}Accelerator Oscillator API FAQ
What does the Accelerator Oscillator API return?
It returns value, plus a timestamp for the request. Results are JSON.
Is the latest Accelerator Oscillator 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 Accelerator Oscillator settings can I change?
You can set lengthSlow, lengthFast. See the parameters table above for defaults.
Can I get Accelerator Oscillator 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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