When Adding Files Makes Your Claude Project Answer Worse
You upload more material to a Claude Project and the answers get vaguer, not sharper. The cause is overlap, not volume. Here is a small script that measures how much your knowledge files repeat each other, and the three questions I use to decide what stays.
Writing Effective Custom Instructions for Claude Projects
A practical guide to writing Claude Projects custom instructions that actually shape Claude's behavior — covering role definition, output constraints, and project-specific context sharing.
When Claude Projects Won't Read Your Files — Catch the Cause Before You Upload
Your PDF is in the project, but Claude keeps saying it has no information. No error, just silence. Here's how to place the cause in one of three layers — index, file, or instructions — and a script that diagnoses the file layer before you upload.