[Home](./index.md) > [bitburner](./bitburner.md) > [Bladeburner](./bitburner.bladeburner.md) > [getSkillUpgradeCost](./bitburner.bladeburner.getskillupgradecost.md) ## Bladeburner.getSkillUpgradeCost() method Get cost to upgrade skill. Signature: ```typescript getSkillUpgradeCost(name: string): number; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | name | string | | Returns: number Number of skill points needed to upgrade the specified skill. ## Remarks RAM cost: 4 GB 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.