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Tesla JSON API
This is unofficial documentation of the Tesla JSON API used by the iOS and Android apps. The API provides functionality to monitor and control the Model S (and future Tesla vehicles) remotely. The project provides both a documentation of the API and a Ruby library for accessing it.
If any folks at Tesla are reading this, I'd love to help coordinate a developer program for your APIs. If there's any way I can be helpful, please feel free to get in contact. Also, I'd love to be in the beta firmware program :wink:
Ruby Gem 
This gem provides a basic wrapper around the API to easily query and command the car remotely. It also provides access to the streaming API and a means to process data coming from it.
Installation
Add this line to your application's Gemfile:
gem 'tesla_api'Or install it yourself:
gem install tesla_apiUsage
Here's a quick example:
require 'tesla_api'
tesla_api = TeslaApi::Client.new(email: email, client_id: client_id, client_secret: client_secret)
tesla_api.login!(password)
# Or if you have an access token:
tesla_api = TeslaApi::Client.new(access_token: access_token)
model_s = tesla_api.vehicles.first # => <TeslaApi::Vehicle>
model_s.wake_up
vehicle_data = model_s.vehicle_data
model_s.auto_conditioning_start unless vehicle_data["climate_state"]["is_auto_conditioning_on"]
model_s.set_charge_limit(90)
model_s.charge_start
charge_state = vehicle_data["charge_state"]
puts "Your Model S is #{charge_state["charging_state"]} " +
"with a SOC of #{charge_state["battery_level"]}% " +
"and an estimate range of #{charge_state["est_battery_range"]} miles"Copyright
Ruby portions are Copyright (c) 2014-Present Tim Dorr. Released under the terms of the MIT license. See LICENSE for details.