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coinpaprika-api-nodejs-client

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Official CoinPaprika API Node.js client — 10,000+ coins, real-time prices, OHLCV, and exchange data.

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# Coinpaprika API NodeJS Client

This library provides convenient way to use [Coinpaprika.com API](https://api.coinpaprika.com/) in NodeJS.

[Coinpaprika](https://coinpaprika.com) delivers full market data to the world of crypto: coin prices, volumes, market caps, ATHs, return rates and more.

## Install

```sh
npm install @coinpaprika/api-nodejs-client
```

Requires Node.js **18 or newer** (uses the built-in global `fetch`). If you need to support Node 14 to 17, stay on the `2.x` line.

## Usage

### CommonJS

```js
const CoinpaprikaAPI = require('@coinpaprika/api-nodejs-client');

const client = new CoinpaprikaAPI();

client.getGlobal().then(console.log).catch(console.error);
client.getCoin('btc-bitcoin').then(console.log).catch(console.error);
```

### ESM

```js
import CoinpaprikaAPI from '@coinpaprika/api-nodejs-client';

const client = new CoinpaprikaAPI();
const data = await client.getGlobal();
```

### TypeScript

Type declarations ship with the package, so no `@types` install is needed.

```ts
import CoinpaprikaAPI from '@coinpaprika/api-nodejs-client';

const client = new CoinpaprikaAPI({ apiKey: process.env.COINPAPRIKA_KEY });
const markets = await client.getCoinMarkets('btc-bitcoin', { quotes: ['USD', 'BTC'] });
```

Check out the [Coinpaprika API documentation](https://api.coinpaprika.com/) for more information!

## Configuration

```js
const client = new CoinpaprikaAPI({
 version: 'v1', // API version (default 'v1')
 pro: true, // Use Pro host (api-pro.coinpaprika.com). Default false.
 baseUrl: 'https://api.coinpaprika.com',// Override entirely (wins over `pro`)
 apiKey: process.env.COINPAPRIKA_KEY, // Sent as `Authorization: <key>` per Coinpaprika docs (no Bearer prefix)
 retry: { attempts: 3, delay: 300 }, // Opt-in retry on 408/425/429/5xx & network errors (exponential backoff)
 config: { // Passed straight to fetch(url, config)
 headers: { 'User-Agent': 'my-app/1.0' },
 signal: controller.signal // AbortSignal for cancellation (see below)
 },
 fetcher: customFetch // Optional: override the fetch implementation
});
```

### Pro API key

Pro-tier endpoints (`getCoinsMappings`, `getChangelogIds`, `getKeyInfo`, and some fields on public endpoints) require an API key **and** the Pro host (`https://api-pro.coinpaprika.com`). The client sends the key exactly as documented: `Authorization: <key>` (no `Bearer` prefix).

```js
const client = new CoinpaprikaAPI({
  pro: true,
  apiKey: process.env.COINPAPRIKA_KEY
});
await client.getKeyInfo();
```

### Request cancellation

**Client-wide** (all calls on this client share the signal):

```js
const controller = new AbortController();
const client = new CoinpaprikaAPI({ config: { signal: controller.signal } });

const p = client.getCoins();
setTimeout(() => controller.abort(), 100);
try { await p } catch (e) { /* AbortError */ }
```

**Per-call** via `withSignal(signal)` returns a new client bound to that signal; the original is untouched:

```js
const client = new CoinpaprikaAPI();

const controller = new AbortController();
const p = client.withSignal(controller.signal).getCoins();
setTimeout(() => controller.abort(), 100);
try { await p } catch (e) { /* AbortError on the scoped call only */ }

// The parent client keeps working:
await client.getGlobal();
```

### Retries

Opt in via `retry`. Retries only on transient failures (408, 425, 429, 500 to 504, network errors); 2xx/4xx (besides the above) are returned as-is. Exponential backoff: `delay * 2^(attempt-1)`.

## API Coverage

```js
const CoinpaprikaAPI = require('@coinpaprika/api-nodejs-client')
const client = new CoinpaprikaAPI()
```

#### Market Data
```js
client.getGlobal()                                    // Global market overview
client.getCoins()                                     // List all coins
client.getCoin('btc-bitcoin')                         // Coin details
client.getCoin('btc-bitcoin', { quotes: ['USD', 'BTC'] })  // Coin details with quotes
```

> `getTicker` and `getAllTickers` were **removed in 3.0.0** (upstream `/ticker` endpoint is deprecated). Use `getCoin`, `getCoinsOHLCVLatest`, and `getCoinsOHLCVHistorical` instead. See the [CHANGELOG](./CHANGELOG.md#300---2026-04-13) for migration snippets.

#### OHLCV
```js
client.getCoinsOHLCVLatest('btc-bitcoin')             // Latest full day OHLCV
client.getCoinsOHLCVToday('btc-bitcoin')              // Today's OHLCV (live)
client.getCoinsOHLCVHistorical({ coinId: 'btc-bitcoin', start: '2024-01-01' })  // Historical
```

#### Coins
```js
client.getCoinTwitter('btc-bitcoin')                  // Twitter timeline
client.getCoinEvents('btc-bitcoin')                   // Coin events
client.getCoinExchanges('btc-bitcoin')                // Exchanges listing coin
client.getCoinMarkets('btc-bitcoin', { quotes: ['USD', 'BTC'] })  // Markets for coin (array or CSV string)
client.getCoinsMappings()                             // ID mappings (Pro)
```

#### Exchanges
```js
client.getExchanges()                                 // List all exchanges
client.getExchange('binance')                         // Exchange details
client.getExchangeMarkets('binance', { quotes: ['USD', 'BTC'] })  // Markets on exchange (array or CSV string)
```

#### Contracts
```js
client.getPlatforms()                                 // List contract platforms
client.getContracts('eth-ethereum')                   // Contracts on Ethereum
client.getTickerByContract('eth-ethereum', '0xdac1...') // Ticker by contract
client.getHistoricalByContract('eth-ethereum', '0xdac1...', { start: '2024-01-01' })
```

#### Other
```js
client.search({ q: 'bitcoin', c: 'currencies', limit: 10 })
client.priceConverter({ base_currency_id: 'btc-bitcoin', quote_currency_id: 'usd-us-dollars', amount: 1 })
client.getPeople('satoshi-kobayashi')                 // Person details
client.getTags()                                      // List tags
client.getTag('blockchain-service')                   // Tag details
client.getKeyInfo()                                   // API key info (requires key)
client.getChangelogIds()                              // Recent changelog IDs (Pro)
```

## Notes on query params

- Any param that accepts multiple values (e.g. `quotes`, `c` for `search`) can be passed as either a CSV string or an array; arrays are joined with commas automatically before being sent to the API.
- Required params are validated synchronously and throw a descriptive `Error` before any network call (e.g. `client.search({})` throws `"q (search query) is required"`).

## Changelog

See [CHANGELOG.md](./CHANGELOG.md) for release notes.

## License

CoinpaprikaAPI is available under the MIT license. See the LICENSE file for more info.

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