MultichainJavaAPI is an Open Source Java API : https://github.com/SimplyUb/MultiChainJavaAPI
Multichain refers the API but the API is completly developped independently with no direct link with Multichain developpment team. You should ask API question directly on github space.
To answer to some questions/comments :
- In my side getperrinfo with multichain-cli call (under windows) doesn't answer anything :
The API answers null, maybe it could be an empty list. No return was done before for one or the other;
- getnetworkinfo is still not implemented. No one asked for it before. MultichainJavaAPI is an Open Source API, don't hesitate to ask for fonctionnalities or, more than that, to contribute;
- usually to test created Blockchain well being, I commonly use : CommandElt.GETINFO