ChrisP I guess for Tomato Agile, users could effectively use our Agile integration. The wholesale prices should be the same for your region. Though I appreciate the actual price might differ slightly between Octopus and Tomato, but that may be mostly irrelevant if you're charging 'cheapest number of slots' for a specific window.
Not sure about the Lifestyle EV tariff and how dynamic this is?
When I browsed the Tomato Energy site briefly, I also didn't see any mention of a developer API which would be required before we could integrate.