read-guard

/plugin install read-guard --marketplace rezk2ll/skills

What it does

Stops a single Read of a large file from filling your context. When Claude reads a big file with no offset or limit, the read is capped to the first 400 lines and Claude gets a note telling it to find the part it needs and read that range.

When to use it

• You work in repos with large generated files, lockfiles, long modules or logs.
• You see Claude read whole files when it needed one function.

How it works

• Applies only to Read calls with no offset and no limit. An explicit range always passes.
• Files at or under the size limit (40 KB by default) pass untouched.
• Images, PDFs, SVGs and notebooks pass untouched.
• A capped read returns the first lines plus a note with the file size and how to read the rest.

Configuration

Set these with /config, or under pluginConfigs in your user settings.

• maxBytes (default 40000): files larger than this get capped.
• capLines (default 400): how many lines a capped read returns.

Requirements

• Claude Code 2.1.287 or later.

{ "modules": ["./register.ts"] }