Creditor-debtor engagement in one form or another has been a feature of many sovereign debt restructurings. In some cases, debtor-creditor engagement has been formalized and took the specific form of creditor committees. Views differ considerably on the merits and demerits of CCs, and on the level of prescription and detail that is desirable from a policy perspective. The incentives of the main actors in sovereign debt also differ with respect to creditor engagement, particularly as regards ex ante contractual clauses. The article focuses on the possible content of creditor-debtor engagement. Creditor-debtor engagement can take four main forms: (i) the insertion ex ante of contractual clauses in bond documentation for creditor committees (CCs); (ii) ex ante best practices for formal creditor committees; (iii) ex ante best practices for engagement between creditors and debtors or (iv) ex post agreement between the debtor and creditor on creditor engagement or CCs.