Let me illustrate with a specific, simple example: fixing linter or compiler errors. The problems I solve with this method are all verifiable via the command line (this can usually be documented in CLAUDE.md). Claude Code will continuously adjust the code based on the linter's output until all errors are resolved. This process often takes quite some time. I typically do this after completing a feature development. If Claude Code mistakenly thinks it has finished the task during one of these checks, it will halt the entire process. I then have to restart it using the same prompt to continue the task.
Therefore, I'm looking for an external tool to manage Claude Code. I haven't found one yet. I've seen some articles suggesting the use of a subagents approach, where tools like Gemini CLI or Codex could launch Claude Code. I haven't thoroughly explored this method yet.