Convert candles to Heikin-Ashi
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.
api.oanor.com/chartconvert-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 85 ms
- Server probes · 24h
- Subscribers
- 4,686
- active
- Total calls
- 76
- last 7 days
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
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
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
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
Built by
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api.oanor.com/tokenpricehistory-api
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
TradingView Technical Ratings API
Live technical-analysis ratings and market screeners from TradingView, with no key. TradingView's famous "Strong Buy / Buy / Neutral / Sell / Strong Sell" gauge aggregates around 26 indicators into one consensus rating; this reads TradingView's own public scanner and returns it cleanly across crypto, US stocks and forex. Get the full technical rating for any symbol — the overall consensus plus the separate moving-average and oscillator sub-ratings, with the live RSI, MACD, ADX and Stochastic values; screen a market for the top movers ranked by change, volume, rating or price, each with its rating; and find symbols by name with their price and rating. The technical-signal / screening layer for trading dashboards, screeners, alpha tools and analytics. Distinct from single-indicator APIs — this is TradingView's aggregated consensus rating and multi-symbol screener. Live from TradingView; short cache only.
api.oanor.com/tradingview-api
Fibonacci Levels API
Automatic Fibonacci retracement and extension levels for any stock, index, FX pair, commodity or crypto, computed live from Yahoo Finance candles, no key. Fibonacci levels are the support/resistance map traders draw from a trend's swing high and swing low: after a move, price tends to pull back to the 38.2%, 50% or 61.8% retracement before resuming, and to project to the 127.2%, 161.8% or 261.8% extension as a target. This finds the dominant recent swing automatically and lays the levels out, with where price sits right now. The retracement endpoint detects the swing high and low over a lookback window, works out the trend direction, and returns the retracement levels (0, 23.6, 38.2, 50, 61.8, 78.6, 100%) with their prices — plus which two levels price is currently between and the nearest one. The extension endpoint returns the projection targets beyond the swing (127.2, 141.4, 161.8, 200, 261.8%) in the trend's direction. Both report the swing they were built from so you can see exactly what was measured. This is the Fibonacci-levels cut — a distinct price-level tool, separate from the oscillator and channel indicator feeds (RSI, MACD, Bollinger, SuperTrend, Keltner), from FX pivot points and from the Ichimoku system. Levels are in the instrument's own price; the swing is detected mechanically (highest high / lowest low over the window), not hand-picked. Interval (1d/1wk/1mo) and lookback are configurable. Keyless, nothing stored beyond a short cache.
api.oanor.com/fibonacci-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())Ratings
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