Proficiency with a set of artisan's tools lets you add your proficiency bonus to any ability checks you make using the tools in your craft. Each type of artisan's tools requires a separate proficiency.

When you adopt this specialization at 3rd level, you gain proficiency with smith's tools. If you already have this proficiency, you gain proficiency with one other type of artisan's tools of your choice.

At 3rd level, you've learned how to produce exactly the tool you need: with thieves' tools or artisan's tools in hand, you can magically create one set of artisan's tools in an unoccupied space within 5 feet …

This tool is integrated into your body, and you double your proficiency bonus for any ability checks you make with it. You must have your hands free to use this integrated tool.

Choose one skill in which you have proficiency. You gain expertise with that skill, which means your proficiency bonus is doubled for any ability check you make with it.

Was it a standing army, a town guard, or a village militia? Or it might have been a noble's or merchant's private army, or a mercenary company. Source: Player's Handbook Skill Proficiencies: Athletics, …

Whatever form the tool takes, you are proficient with it. While holding this tool, you gain a bonus to the spell attack rolls and the saving throw DCs of your artificer spells.

You also gain proficiency with smith's tools. If you already have this tool proficiency, you gain proficiency with one other type of artisan's tools of your choice.

You gain proficiency with two kinds of artisan’s tools of your choice. Your proficiency bonus is doubled for any ability check you make that uses either of the chosen proficiencies.

Your class grants proficiency in certain weapons, reflecting both the class's focus and the tools you are most likely to use. Whether you favor a longsword or a longbow, your weapon and your ability to …