How a Single CLAUDE.md File Can Cut Your AI Coding Token Costs

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Many developers waste tokens by re-explaining their project to Claude at the start of every session, driving up costs and reducing consistency. A simple fix involves maintaining a persistent memory file — called CLAUDE.md in Claude Code or a project rules file in Cursor — that outlines the project overview, tech stack, folder structure, and coding conventions. Claude can then reference this file instead of relying on repeated context dumps or scanning entire codebases. Developers are also advised to prompt Claude to read relevant files and share a plan before making any code changes, keeping context windows lean. Regularly updating the memory file after major changes ensures Claude remains a consistent and accurate coding partner over time.

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