So.
I got Address and PrivateKey from VanityGen and it's enough?
How Can I spend my coins? Where can I import my key string?

vanitygen - yes, it is. I'm looking for this tool.
But when I get the addresses how can I send them to bitcoin network?

I want 1000 different addresses with different keys.

Are there any APIs except BitCoin Core (it's too large)?

Hello.
Please, help me.
I'm looking for API to create/generate new BTC address and download its private key.
Thanks a lot!

I need 1000 wallets.