This Python tool displays the result of the introspection query of a graphql endpoint in a pretty way. So you can see all objects, queries and mutations avalaible.

git clone https://github.com/gwen001/graphql-introspection-analyzer
cd graphql-introspection-analyzer
pip3 install -r requirements.txt

python3 graphql-introspection-analyzer <introspection file>

Feel free to open an issue if you have any problem with the script.