<![CDATA[Micro, Small, and Medium Enterprises (MSMEs) urgently require an accurate information system for stock management and sales transactions. The main problem faced by the Toko Sembako Mbah Wiro grocery store, as the case study in this research, is stock discrepancy caused by conventional ledger-based manual recording. This study aims to implement a web service-based system that integrates the Laravel framework and MySQL database utilizing a REST API architecture with stateless authentication for automated data synchronization. The system development employs the linear sequential model (Waterfall), which is tailored to the internal kinship-based governance of the store. The testing results indicate that the system is capable of synchronizing stock updates in real-time through a Database Transaction mechanism, thereby eliminating recording errors due to transaction failures. Furthermore, the REST API generates structured JSON data output that is ready for direct integration into the thermal receipt printer module. The implementation of this system has proven effective in improving the efficiency of stock management and sales transactions at Toko Sembako Mbah Wiro.]]>
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