All the URIs provided in this documentation are environment independent.
While developing against our sandbox environment you should use https://api-sandbox.justgiving.com
In production use https://api.justgiving.com
The sandbox environment is always running the version of JustGiving that is currently on production.
When you register for an API key, you'll be able to access the sandbox server immediately. Once you submit your application, we'll grant you access to production.
We maintain a small collection of examples in the SDK wiki on GitHub. We welcome submissions in any language.
We are more than happy to take bug reports or pull requests for the public SDKs via the GitHub issue tracker.
You can also call the JustGiving office and our helpdesk for support, but it'll probably take far longer for us to get the message and get back to you that way as we'll have to wait for the messages to get passed on.