Most companies know their customers through fragments. A sales team has call notes. Marketing has survey data. Support has ticket histories. Product has usage analytics. Each team holds a piece of the picture, stored in a different system, described in a different vocabulary, and inaccessible to anyone outside the team that collected it. When an AI agent needs to generate customer-facing content, it draws on none of this. It defaults to generic assumptions about a generic audience.
The Prompt Engineering Project includes 10 customer intelligence prompt libraries that solve this by structuring customer knowledge into interconnected databases. Each library captures a specific dimension of customer understanding. Together, they form an integrated system where insights flow from one library to the next, each making the others more precise and more useful.
This article covers all 10 libraries: what each one captures, how they connect, and how a single customer insight compounds as it flows through the system.