[BUG] Claude Code "No Response Requested" Loop

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?

Summary

Claude Code entered a loop where it output "No response requested" across four consecutive user turns instead of responding with analysis of data it had just successfully read via tool calls. The model consumed thousands of tokens doing nothing while I waited for a response.

What Should Happen?

After successfully reading the three Omada CSV files (60 online clients, 8 offline clients, 0 blocked clients), Claude should have immediately produced an analysis of the network state, compared it against the known open work items, and reported findings to the user. The data was fully loaded in context — there was no ambiguity about what to do next.

Error Messages/Logs

No Error Messages.

Steps to Reproduce

1. User provided a handoff prompt with extensive context about a network infrastructure project
2. Claude read multiple documentation files successfully (NETWORK-MIGRATION.md, MEMORY.md, worktodo.md, RACK-REWIRE.md)
3. User attached a ZIP file: Omada Client Export 2026-4-7.zip
4. Claude successfully extracted the ZIP and read all three CSV files (OnlineClient, OfflineClient, BlockedClient) — tool calls completed normally with full data returned
5. User said: "Continue from where you left off."
6. BUG: Claude responded with "No response requested." — no analysis, no summary, nothing
7. User said: "claude?"
8. BUG: Claude responded with "No response requested." again
9. User said: "Claude?"
10. BUG: Claude responded with "No response requested." again
11. User said: "STOP"
12. Claude finally responded with a real message: "Stopped. What do you need?"

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Unknown

Claude Code Version

Claude Code Version 2.1.87

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Non-interactive/CI environment

Additional Information

_No response_