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API · /chartconvert-api

Chart Convert API

healthy 4,686 Subscribers

Live conversion of OHLC candles into the alternative chart types traders use to filter noise — computed on demand, no key, nothing cached. Convert candles to Heikin-Ashi (which smooths price action and clarifies trend); build Renko bricks from a price series and a brick size (stripping out time and small moves); and produce a Three Line Break chart (which only prints a new line on a confirmed move). Each carries the latest trend direction. Works for any market — forex, stocks, crypto or commodities. A chart-transformation engine, distinct from pattern-detection and indicator tools: it turns ordinary candles into the trend-clarifying chart types a discretionary trader reads.

#chart #heikin-ashi #renko #three-line-break #technical-analysis #trading #candles #finance
api.oanor.com/chartconvert-api
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Machine-readable spec so AI agents can integrate this API.

/api/chartconvert-api/openapi.json
/api/chartconvert-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
338 ms
Server probes · 24h
Subscribers
4,686
active
Total calls
4
last 7 days
status Full status page → · 8 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 5,200 calls / month
  • 3 requests / second
  • Hard cap (429 above quota, no overage)
  • 5.2k calls/month
  • 3 req/sec
  • Heikin-Ashi, Renko & Three Line Break
  • No credit card
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Starter

€6.20 /month

  • 116,000 calls / month
  • 10 requests / second
  • Hard cap (429 above quota, no overage)
  • 116k calls/month
  • 10 req/sec
  • Email support
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Pro

€17.30 /month

  • 548,000 calls / month
  • 25 requests / second
  • Hard cap (429 above quota, no overage)
  • 548k calls/month
  • 25 req/sec
  • Priority support
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Business

€41.60 /month

  • 3,290,000 calls / month
  • 55 requests / second
  • Hard cap (429 above quota, no overage)
  • 3.29M calls/month
  • 55 req/sec
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

Crypto History API

Live historical price data and analytics for any crypto coin, from the public CoinGecko feed. Get open/high/low/close candles over a date range; the price, market cap and volume time series; the move over a period with its high and low; and a coin's multi-period performance with all-time-high and all-time-low. Works for thousands of coins in any quote currency. A crypto history-and-analytics layer — distinct from spot-price and whole-market feeds: it turns the price archive into the candles, time series and moves a trader studies. Live, with a short upstream cache.

api.oanor.com/cryptohistory-api

Candlestick Pattern API

Live candlestick-pattern recognition that traders and trading bots run on OHLC candles — computed on demand, no key, nothing cached. Detect the patterns that complete on the last candle of a series; scan a whole series for every pattern occurrence with its position; or list the 24 supported patterns. Each match carries a bullish, bearish or neutral signal. Works for any market — forex, stocks, crypto or commodities. A pattern-recognition engine, distinct from numeric-indicator and support-resistance tools: it turns raw candles into the reversal and continuation signals a chartist reads.

api.oanor.com/candlestick-api

Technical Indicators API

Live technical-analysis indicators that traders and trading bots run on a price series, computed on demand from the closes you pass in — no key, nothing cached. Get Wilder's RSI; the MACD line, signal line and histogram; the upper, middle and lower Bollinger Bands with bandwidth and %B; and simple or exponential moving averages. Every value is computed live from your input and works for any market — forex, stocks, crypto or commodities. A technical-indicator engine, distinct from raw price feeds and from pivot/fibonacci level tools: it turns a series of prices into the momentum, trend and volatility indicators a strategy acts on.

api.oanor.com/technicals-api

FX Pivot Points API

Live FX pivot points — the classic support and resistance map traders watch — as an API, computed from European Central Bank daily reference rates. For any currency pair it takes the prior completed week's or month's high, low and close and returns the central pivot P plus three resistances (R1, R2, R3) and three supports (S1, S2, S3), in both the Classic and Fibonacci methods. It also returns the current rate, whether it sits above the pivot (bullish bias) or below (bearish), and the nearest level above and below — ready-made entry, target and stop levels. Get a pair's pivots, or scan a whole basket for bias at a glance. A support/resistance layer for forex, trading and charting apps. Live, no key. Distinct from rate, strength, volatility, correlation, signal (MA/RSI), range, seasonality and drawdown APIs — this is the pivot-point S/R map.

api.oanor.com/fxpivots-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Chart Convert API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Chart Convert API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Chart Convert API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Chart Convert API cost?
Chart Convert API has a free tier with 100 calls / month. Paid plans start at €6.20 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Chart Convert API GDPR-compliant?
All requests to Chart Convert API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/chartconvert-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/chartconvert-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/chartconvert-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/chartconvert-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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