In a saucepan, add water and place it on medium heat. When the water starts to boil, add rice noodles and cook until they are tender. Drain the noodles, run cold water over them, and set them aside.
In a large bowl, add chopped napa cabbage, cucumbers, carrots, spring onions, and cooked rice noodles.
In a separate bowl, add lemon juice, olive oil, minced garlic, grated ginger, agave nectar, coconut aminos, sesame oil, and salt, and mix well.
Pour the dressing over the napa cabbage and noodles and toss until all the ingredients are well combined.
Garnish with sesame seeds and serve.