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Return price and other data for a given coin on a given date: https://www.coingecko.com/api/documentations/v3#/coins/get_coins__id__history

Restrict currencies to the major ones only: BTC, USD, EUR, and GBP

Return tickers for a given coin at specified exchanges. See: https://www.coingecko.com/api/documentations/v3#/coins/get_coins__id__tickers

See also #15

When running

bitcoin <- coin_history_range(coin_id = "bitcoin",
                              vs_currency = "usd",
                              from = as.POSIXct("2016-01-01 00:00:00", tz = "UTC"),
                              to = as.POSIXct("2019-08-24 00:00:00", tz = "UTC"))

an error occurs:

Error: Can't recycle `..1` (size 1332) to match `..3` (size 1331).

This is due to a missing value in the retrieved data, a situation that is not treated gracefully and needs to be fixed.

Return market data for a range of dates in the past: https://www.coingecko.com/api/documentations/v3#/coins/get_coins__id__market_chart_range

On 2017-04-02, market_cap is missing for bitcoin and ethereum. Also, when total_volume is zero, how is the price determined?

crypto_top5 <- coin_history(c("bitcoin", "ethereum", "binancecoin", "ripple", "cardano"), 
                            vs_currency = "usd", days = "max")

Remove the unnecessary strictness for max_attempts to be an integer, throughout the package.

A utility function to check the current status of the API.

A utility function that returns a list of all currencies supported by the CoinGecko API.

coin_id is used in many functions, so move its definition to function_params().

Problem: The number of calls to the free version of the CoinGecko API has recently been significantly reduced: from ca. 50 calls/min to only 10-30 calls/min. This causes tests and examples in the documentation to fail (at build time) with the HTTP status of 429. Another reason why tests started failing on CRAN is because CRAN changed their policy towards the \donttest command in documentation - by default, examples that are wrapped in \donttest are in fact tested.

Solution: Use the @examplesIf in documentation (instead of the standard @examples), in combination with a non-public function that checks if the API rate is exceeded. Also, update the documentation accordingly (i.e. warn the users about the very limited number of calls they can now make with the free version of the API).

At the moment, coin_history() returns data for a single coin at a time, which is not always convenient. Change this behaviour so that the coin_id argument can take a vector of coin IDs. Important: due to the API rate limit, the size of such a vector cannot be too large.

https://cran.r-project.org/web/packages/geckor/index.html

A utility, non-public, function to automatically document common function arguments.

Returns market data for the last X days: https://www.coingecko.com/api/documentations/v3#/coins/get_coins__id__market_chart

Using .data in tidyselect expressions leads to multiple warning when running tests.

Return OHLC data for a coin for the last N days. See: https://www.coingecko.com/api/documentations/v3#/coins/get_coins__id__ohlc

A utility, non-public, function that is used to build correctly formatted GET requests.

Is there a way to pull token address information from any of the endpoints (free or subscription-based)?

Ex) given coin_id (yogi) what is its contract address?

A utility, non-public, function to perform paginated API calls.

Get exchange rate of a supported currency vs BTC:
https://www.coingecko.com/api/documentations/v3#/exchange_rates/get_exchange_rates

Thank you for this great package. Is there a way to obtain the historical daily ohlc data of all coins? I divided the 13,253 coins supported by CoinGecko into many subsamples with each containing 30 coins and then used the function coin_history_ohlc to get the data in a for loop. This approach failed with an error message saying too many requests.

A utility, non-public, function that performs a GET request.

Can you please add ?

• Total Value Locked (TVL)
• Market Cap / TVL Ratio

Returns a list of top-7 trending coins on CoinGecko as searched by users in the last 24 hours (ordered by most popular first). See: https://www.coingecko.com/api/documentations/v3#/trending/get_search_trending

Endpoint: /simple/price

See: https://www.coingecko.com/api/documentations/v3#/simple/get_simple_price

Endpoint: /simple/token_price/{id}

See: https://www.coingecko.com/api/documentations/v3#/simple/get_simple_token_price__id_

A utility, non-public, function to validate common function arguments.

Returns a list of exchanges (and their IDs) currently supported by CoinGecko. See: https://www.coingecko.com/api/documentations/v3#/exchanges/get_exchanges_list