# Bithumb Exchange API
> Live spot market data from Bithumb, South Korea's major crypto exchange, served straight from its public order books — no key on the data, nothing cached, nothing stored. Look up any market for its last price, 24h open/high/low, 24h change and base/quote volume; rank every market for a payment currency (Korean won KRW, or BTC) by 24h turnover; list the tradable coins; or pull live order-book depth with the running spread. Markets are addressed COIN_PAYMENT (BTC_KRW, ETH_BTC). This is the Bithumb venue specifically — a distinct Korean-won price feed, ideal for tracking the "kimchi premium" and KRW price discovery, separate from the USD/USDT-quoted exchange APIs in the catalogue.

## Authentication
All requests require your oanor API key in the `x-oanor-key` header. Get one at https://www.oanor.com/developer/keys.

```bash
curl -H "x-oanor-key: oanor_live_…" "https://api.oanor.com/bithumb-api/..."
```

## Pricing
- **Free** (Free) — 19,000 calls/Mo, 3 req/s
- **Starter** ($9/Mo) — 270,000 calls/Mo, 10 req/s
- **Growth** ($27/Mo) — 1,220,000 calls/Mo, 25 req/s
- **Scale** ($63/Mo) — 4,400,000 calls/Mo, 50 req/s

## Endpoints

### Ticker

#### `GET /v1/ticker` — Ticker for one market

**Parameters:**
- `market` (query, optional, string) — Market as BTC_KRW Example: `BTC_KRW`
- `coin` (query, optional, string) — Coin (with payment=) Example: `ETH`
- `payment` (query, optional, string) — Payment currency KRW or BTC Example: `KRW`

**Example:**
```bash
curl -H "x-oanor-key: $KEY" \
  "https://api.oanor.com/bithumb-api/v1/ticker?market=BTC_KRW&coin=ETH&payment=KRW"
```

### Tickers

#### `GET /v1/tickers` — All markets for a payment currency ranked by 24h turnover

**Parameters:**
- `payment` (query, optional, string) — Payment currency KRW or BTC Example: `KRW`
- `limit` (query, optional, string) — Max results (1-400) Example: `50`

**Example:**
```bash
curl -H "x-oanor-key: $KEY" \
  "https://api.oanor.com/bithumb-api/v1/tickers?payment=KRW&limit=50"
```

### Markets

#### `GET /v1/markets` — Tradable coins for a payment currency

**Parameters:**
- `payment` (query, optional, string) — Payment currency KRW or BTC Example: `KRW`

**Example:**
```bash
curl -H "x-oanor-key: $KEY" \
  "https://api.oanor.com/bithumb-api/v1/markets?payment=KRW"
```

### Book

#### `GET /v1/book` — Live order-book depth with running spread

**Parameters:**
- `market` (query, optional, string) — Market as BTC_KRW Example: `BTC_KRW`
- `limit` (query, optional, string) — Depth per side (1-30) Example: `20`

**Example:**
```bash
curl -H "x-oanor-key: $KEY" \
  "https://api.oanor.com/bithumb-api/v1/book?market=BTC_KRW&limit=20"
```

### Meta

#### `GET /v1/meta` — Service metadata

**Example:**
```bash
curl -H "x-oanor-key: $KEY" \
  "https://api.oanor.com/bithumb-api/v1/meta"
```


---
Marketplace page: https://www.oanor.com/api/bithumb-api
OpenAPI spec: https://www.oanor.com/api/bithumb-api/openapi.json