[BUG]

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

I run long Claude Code sessions with a lot of tool calls and I've noticed that <system-reminder> tags are leaking into the tool output that's visible to me as the user. The one I keep seeing is the "task tools haven't been used recently" reminder - it shows up after almost every tool call, sometimes multiple times per response.

The problem isn't that the reminder exists - it's that it renders in my view of the conversation. When I'm reading through a sequence of file moves, grep results, and edit confirmations, having a paragraph of internal system prompting injected into the middle of that is genuinely disorienting. I kept thinking it was a hook error at first.

Repro is easy - just run a session where you're doing a lot of tool calls without using the Task tools. The reminder starts appearing in tool results and it doesn't stop.

What Should Happen?

Two thoughts on a fix:

1. These should be invisible to the user entirely - they're instructions to the model, not output for me
2. If suppressing them from the rendered output isn't feasible, at least gate the frequency. Seeing it after every

single tool call is excessive even if I could ignore it

Not a blocker, just sandpaper that is rubbing me the wrong way - CONSTANTLY!
Thanks for building this thing - I live in it.

Error Messages/Logs

● Ran 1 stop hook (ctrl+o to expand)
  ⎿  Stop hook error: Failed with non-blocking status code: Set-Location : Cannot find path
  'Q:\FlowTether\sessionlogs\:CLAUDE_PROJECT_DIR' because it does not exist.
  At line:1 char:1
  + Set-Location :CLAUDE_PROJECT_DIR; & '.\scripts\session-log-reminder.p ...
  + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      + CategoryInfo          : ObjectNotFound: (Q:\FlowTether\s...UDE_PROJECT_DIR:String) [Set-Location],
  ItemNotFoundE
     xception
      + FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.SetLocationCommand

  & : The term '.\scripts\session-log-reminder.ps1' is not recognized as the name of a cmdlet, function, script
  file, or
  operable program. Check the spelling of the name, or if a path was included, verify that the path is correct
  and try
  again.
  At line:1 char:37
  + ... -Location :CLAUDE_PROJECT_DIR; & '.\scripts\session-log-reminder.ps1'
  +                                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      + CategoryInfo          : ObjectNotFound: (.\scripts\session-log-reminder.ps1:String) [],
  CommandNotFoundException
      + FullyQualifiedErrorId : CommandNotFoundException

Steps to Reproduce

run any tool. i run a LOT of tools, this is annoying AF.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.74 claude code

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

I dont get it myself. CC says its nothing to worry about but it has made my logs UNREADABLE today!