What Does Spellcraft Do in Pathfinder?

Check: Spellcraft is used whenever your Knowledge and skill of the technical art of casting a spell or crafting a magic item comes into question. This skill is also used to Identify the properties of magic items in your possession through the use of Spells such as Detect Magic and Identify.

What is Spellcraft?

Filters. Magical practices involving the casting of spells.

Can you take 10 on a Spellcraft check?

No, you cannot take 10.

Normally, as long as you are not in a situation of danger, such as combat, or being intimidated, or under stress (like climbing a wall), or being distracted by a traveling bard, you can Take-10 on your Spellcraft checks.