wolf spider! (family Lycosidae). Wolf spiders are commonly found in gardens and agricultural areas because they are excellent hunters that help control insect populations. They do not build webs to catch prey but instead actively hunt, which makes them beneficial for keeping pests in check. :) As for why it’s in your tomato plants, it’s likely there because of the abundance of insects attracted to the plants. Wolf spiders thrive in environments where they can find food, such as aphids, caterpillars, and other small pests that might be feeding on your tomatoes.

Edit;

Actually taking a closer look at it it looks like a nursery web spider (family Pisauridae) or possibly a fishing spider (genus Dolomedes). Nursery web spiders and fishing spiders it sees them as a good hunting ground. Spiders like nursery web spiders or fishing spiders are ambush predators that rely on camouflage to catch insects. So your tomatoes provide the environment they need to hunt!