Preheat the air fryer to 400°F (200°C).
Gently toss tofu cubes with soy sauce, cornstarch, and olive oil until evenly coated.
Place the tofu in the air fryer basket in a single layer. Cook for 10-12 minutes, shaking halfway through, until golden and crispy.
Meanwhile, in a small bowl, mix sweet chili sauce, soy sauce, and lime juice to make the glaze.
Once tofu is cooked, transfer to a bowl and pour the glaze over, tossing gently to coat.
Garnish with chopped cilantro and serve immediately, relishing each crispy, tangy bite.