MemoryDelta checks whether a saved calculation still follows the applicable rule before an AI analyst reuses it. In our electricity emissions demo, an agent reuses last year’s factor and reports 66 tonnes for a Sydney site. MemoryDelta checks the factor version, blocks the outdated calculation before it reaches the model, and lets the agent recalculate 64 tonnes from the same electricity readings. Built on MongoDB Atlas and Atlas Vector Search, MemoryDelta also checks who has permission to use each memory. Reusing an approved calculation cut tool calls from four to two. Across ten test cases run on Atlas, MemoryDelta returned the expected answer every time and kept outdated or unauthorized memories out of the model’s prompt. [Try the interactive demo](https://memorydelta-demo.sepovsky.chatgpt.site)
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