# Missing provideToSpOnBehalfOf interface Low/Info · 0xSimao · CDP stablecoin · 14th March 2025 Finding I-1 of the Felix Price Feeds security review. - Protocol: https://www.usefelix.xyz/ - Report: /reports/felix - Source: https://github.com/0xSimao/audits/blob/main/0xSimao/2025-03-14-felix.pdf --- **Description:** `StabilityPool::provideToSpOnBehalfOf()` is missing the declaration in the `IStabilityPool` interface. **Recommended Mitigation:** Add the function to the interface and override in the implementation. --- Related findings: - [Missing override keyword for interface inherited methods](https://0xsimao.com/findings/m-0-override-keyword-inherited-methods): M^0 Minter Gateway