I would like to use My Ether Wallet to manage ethers and erc20 tokens.
Can i write a software interface to talk to my ether wallet ?
For example, a user wants to buy erc20 token, the software processed the request, and then software talks to my ether wallet for the verification of funds.
I read the my ether wallet website , it seems there is no interface.
No such interface for now to create such commands. You might have to build your ethereum wallet from scratch to have such desired features. But before you do, consider its applicability and security