[Home](./index.md) > [bitburner](./bitburner.md) > [Bladeburner](./bitburner.bladeburner.md) > [getSkillUpgradeCost](./bitburner.bladeburner.getskillupgradecost.md) ## Bladeburner.getSkillUpgradeCost() method You have to be employed in the Bladeburner division and be in BitNode-7 or have Source-File 7 in order to use this function. This function returns the number of skill points needed to upgrade the specified skill. The function returns -1 if an invalid skill name is passed in. Signature: ```typescript getSkillUpgradeCost(name: BladeburnerSkills): number; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | name | [BladeburnerSkills](./bitburner.bladeburnerskills.md) | | Returns: number Number of skill points needed to upgrade the specified skill. ## Remarks 4 GB