External API Datafeed integration into MT4

Hello Guys!

I am looking for a developer how can implement external API datafeed into MT4 platform and show the real-time ask/bid price quotes of the external datafeed in the MT4 platform.
The external datafeed ask/bid quotes and the MT4 ask/bid quotes should be compared and need an EA which can execute orders depend on the quotes deviation.

1. External datafeed need to implement into MT4 by API.

2. Need an indicator which is measuring the quotes difference on tick by tick.

3. Need an EA which are executing trading orders based on the quotes changes.

Thank you!