A non-disclosure agreement essentially intends to protect the rights of a disclosing party as and when sensitive information is disclosed to someone. This can be in the form of a trade secret, intellectual property or secret formula. Need for such an agreement arises when the disclosing party fears misappropriation of secret information. Considering the complexities of the judicial system in India, a non-disclosure agreement is good to have but hard to enforce. Nonetheless you could view a sample NDA format hereunder. Cost for drafting one is mentioned hereunder.