underscoredone.com

Takes a piece of text and either turns it into leetspeak (swapping some letters for numbers and symbols, like 'hello' becoming 'h3110') or turns leetspeak back into normal, easy-to-read words. The same words always produce the same result, so answers never change unexpectedly. -- reliability 82.6122055053711/100 per Paygent Discover

How to call

curl -X POST https://leetspeak-translator.underscoredone.com