Needs review
Source: Traps And Treachery 1

Description: You can create magic traps, which have varied magical effects.

Prerequisites: Craft (Trapmaking), Spellcaster (10th Level)

You can create a magic trap imbued with any spell or spell-like effect you have access to. Crafting a magic trap requires one day for each 1000 gp of the trap's cost.

Crafting a one-use magic trap costs 50 gp and 2 XP multiplied by the caster level. For example, a one use fireball trap with a caster level of 5 would cost 250 gp and 10 xp to create.

Crafting a multiple use magic trap costs 500 gp and 20 XP multiplied by caster level. For example, a charged or continuous fireball trap with a caster level of 5 would cost 2500 gp and 100 XP to create.

You can also repair a broken or inoperative magic trap if it is one that you could make. Doing so costs half the XP, half of the raw materials, and half the time it would take to craft the trap in the first place.

Some magic traps incur extra costs in material components or XP, as determined by the DM.