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altlar.com
TR Türkçe

Crypto Price Widget and Open API

Add a free, live cryptocurrency price box to your website, or read prices as JSON. No sign-up or API key needed.

Create a widget

Hold Ctrl / ⌘ to select more than one (up to 10).

Preview

Code to add to your site

The widget refreshes itself every 5 minutes. Please keep the altlar.com link below the box; it is the only condition for free use. The widget itself is shown in Turkish.

Open JSON API

Read-only, no key required, and callable directly from the browser (CORS enabled). Responses are cached for 60 seconds; polling more often will not return newer data.

EndpointReturns
GET /api/v1/tickersAll tracked assets: price (USD, TRY), 24h / 7d / 30d change, market cap, 24h volume.
GET /api/v1/coin/{slug}A single asset, plus supply, all-time high and number of exchanges. The slug is in the coin page address: /en/c/bitcoin.

Example

curl https://www.altlar.com/api/v1/coin/bitcoin

{
  "updated_at": "2026-10-17T05:30:01+00:00",
  "usd_try": 49.37,
  "data": {
    "slug": "bitcoin", "symbol": "BTC", "name": "Bitcoin",
    "price_usd": …, "price_try": …, "price_source": "markets",
    "change_24h": …, "market_cap_usd": …, "volume_24h_usd": …,
    "url": "https://www.altlar.com/c/bitcoin"
  }
}

Rules

  • Credit the source: link to altlar.com wherever you show the data.
  • A null value means “unknown”, not zero.
  • If price_source is not markets, the price is not live (daily_close: last daily close).
  • change_24h is set only for assets with a live price; 7- and 30-day changes are calculated from daily closes.
  • The data is for information only; do not use it as the sole source for trading or automated transactions.