What is Lockbox?
Lockbox is a forward proxy for making third party API calls.
You run your own Lockbox server. When a workflow platform needs to make a third party API call on your behalf, it makes a Lockbox API call instead. Lockbox makes the call to the third party API, and returns the result to the workflow platform.
Why use Lockbox?
Automation or workflow platforms like Zapier and IFTTT allow 'webhook' actions for interacting with third party APIs. They require you to provide your third party API keys so they can act on your behalf. You are trusting them to keep your API keys safe, and that they do not misuse them.
May be you don't want that.
That's where Lockbox helps.