CoinCLI

This is a simple CLI tool that gets cryptocurrency prices from CoinMarketCap. It's written in Java and compiled ahead-of-time into an executable (as CLI's should be) using GraalVM's native image stuff.

You probably don't want to use this to perform technical analysis. Or at all. It's pretty dumb in its current state and probably always will be. But if you want to contribute, keep reading.

(credit xkcd)

Using

set environement variable CMC_KEY to a proper API key from CoinMarketCap
Just type ./coincli for the man page

❯ ./coincli

usage: coincli
 -c,--coin <arg>   filter on a specific coin
 -d,--down         return only coins that are down over specified time
                   [default: false]
 -h,--help         see all coincli help page
 -n,--num <arg>    max number of coins to return [default: 1000]
 -u,--up           return only coins that are up over specified time
                   [default: false]

Contributing

Pre-Requisites

GraalVM CE 19
Native Image: gu install native-image (see here)

Building

mvn clean package
https://medium.com/graalvm/introducing-the-tracing-agent-simplifying-graalvm-native-image-configuration-c3b56c486271
native-image -jar target/coincli-0.1-jar-with-dependencies.jar coincli

TODO

include everything inside the executable for portability (i guess this ins't the default?)
when supplying both a --num and --up/down, should return the number not the filtered number (or rename to max num to eliminate confusion)
specific coin should hit a different API to get just that coin.
ability to specify time range (not just 7 days hardcoded)

Making Lots of Money*

Step 1. Use CoinCLI

Step 2. ???

Step 3. Riches.

* this is not investment or legal advice.

carimura / coincli