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store: Fix: claude -p nested session failure due to CLAUDECODE env var

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Cal Corum 2026-03-01 00:21:07 -06:00
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---
id: 250d2fe0-5866-42f1-b83d-187b3a64fb84
type: fix
title: "Fix: claude -p nested session failure due to CLAUDECODE env var"
tags: [claude-code, headless, nested-sessions, fix, claude-scheduled, subprocess]
importance: 0.7
confidence: 0.8
created: "2026-03-01T06:21:07.380774+00:00"
updated: "2026-03-01T06:21:07.380774+00:00"
---
# claude -p Nested Session Error Fix
## Problem
`claude -p` fails with "cannot be launched inside another Claude Code session" when the `CLAUDECODE` environment variable is set in the calling shell.
## Fix
Unset the variable before invoking:
```bash
unset CLAUDECODE
claude -p ...
```
In Python subprocess calls (e.g. from ai-assistant project):
```python
env.pop('CLAUDECODE', None)
```
## Additional related gotchas
- `--permission-mode bypassPermissions` cannot be used by root users — must run as non-root
- `--max-budget-usd` is not an instant hard cutoff — it can overshoot (set $0.25, spent $0.37); use conservatively
## Context
Discovered while building claude-scheduled task runner. Also applies to any project launching Claude Code as a subprocess.