you need the python CEC lib see https://github.com/Pulse-Eight/libcec for isntall intructions.
then simply
pip install httc
start the server
httc-server
by default it will run on port 3308 on all interfaces
try:
curl localhost:3308/ping
curl localhost:3308/devices
curl localhost:3308/0/power
curl -X POST localhost:3308/0/power
curl -X POST localhost:3308/0/activate
curl localhost:3308/buttons
curl -X POST localhost:3308/0/menu/press
curl -X POST localhost:3308/standby