This summary is not the rule. The rule text controls.
Parties in a lawsuit can agree between themselves to share more information than what the standard rules require. This agreement is called a stipulation. Normally, Rule 26(a) sets out what information each side must automatically hand over to the other side during discovery, like documents, witness names, and other evidence.
This rule lets both sides work together and decide they want to exchange even more than that minimum amount. For example, if both parties think it would help the case move faster or more fairly, they can agree to share additional documents or information beyond what the law technically demands. This kind of agreement can save time and reduce fights over what needs to be disclosed later in the case.
It's worth noting that this rule only allows parties to agree to give each other more information, not less. If parties want to limit or change the discovery rules in other ways, that usually requires court approval rather than just an agreement between the parties themselves.
