In this subchapter, "obligation" means a bond, undertaking, recognizance, guaranty, or other obligation that is by law or by a charter, ordinance, or rule of a municipality, board, body, organization, court, or public officer required or permitted to be made, given, tendered, or filed to guarantee the performance of an act, duty, or obligation or the refraining from an act.
Tex. Ins. Code § 3503.001