Using large saucepan or Dutch oven, heat water/vegetable stock over medium high heat. Add chard leaves and cook, stirring often, for 5 minutes or until leaves are wilted and tender. Add tamari, tomato paste and garlic and cook an additional minute.

In large bowl, add tomatoes and their juices. Using clean hands, crush/break tomatoes into smaller pieces.

In saucepan with garlic and chard, add crushed tomatoes, olives, capers, agave nectar, crushed red chili pepper flakes and oregano. Stir well. Bring mixture to low simmer; let cook, stirring occasionally, for 20 minutes.

Meanwhile, in large pot with salted water, cook pasta according to package directions. Before draining, reserve about ¼ cup of cooking water. Drain well.

Add cooked pasta, along with fresh basil and reserved cooking water, to sauce. Toss well, or until all noodles are completely coated and sauce is evenly distributed. Season to taste with freshly ground black pepper and serve hot in individual bowls with extra fresh basil for garnish.