Context Engineering: Let AI Coding tools understand large code bases

Core Issues

When a large code base cannot fit all into the context, how can the Agent obtain the information it really needs to complete the current task?

Article structure

1. The context window is not project understanding
2. Static rules, dynamic retrieval and task context
3. Prioritization of code, documentation, history and operational feedback
4. Context compression, update and invalidation
5. Verify contextual design with a cross-file task

Completion criteria

Readers are able to build context inventories for complex tasks and explain why each piece of information needs to be put into context.