Vegetarian, Gluten-Free, and Vegan are on the menu, but the same kitchen also prepares what you avoid, so cross-contamination is possible. Tell staff what you react to, and ask how your dish is prepared before you order.
Sunlight Cafe is a long-running vegetarian cafe in Seattle's Roosevelt neighbourhood serving breakfast, brunch and dinner. Its menu is fully meatless, with vegan swaps and a few dishes marked gluten-free. It makes no gluten-free kitchen claim, so tell the staff about your allergy; the kitchen has the final word.