[BUG] Cloud MCPs not loaded in `claude -p` (print/non-interactive) mode

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?

Description

Cloud MCPs (Slack, Gmail, Google Calendar, Atlassian) that are authenticated and working correctly in
interactive mode are completely absent when using claude -p (non-interactive/print) mode. This is a
regression — the same commands were working until approximately March 18, 2026.

## Environment

• Claude Code version: 2.1.80
• Platform: Linux (Ubuntu)
• Cloud MCPs configured: Slack, Gmail, Google Calendar, Atlassian
• All MCPs show "✓ Connected" via claude mcp list
• OAuth credentials are valid (not expired), with user:mcp_servers scope

## Actual Behavior

Cloud MCPs are completely absent in -p mode. Only built-in deferred tools are present.

## Regression Evidence

This crontab entry was running successfully for 6 consecutive days before it began failing:

```cron
30 8 * ~/.local/bin/claude -p "/morning-brew" >> ~/.claude/morning-brew.log 2>&1

The log shows 6 successful runs followed by consistent failures starting around March 18–19, 2026, with no
changes to local configuration or credentials during that period.

What Should Happen?

Cloud MCPs that are authenticated and connected should be available in -p mode, identical to interactive mode.

Error Messages/Logs

Steps to Reproduce

1. Authenticate and connect cloud MCPs. Confirm they are connected:

claude mcp list
All four show "✓ Connected".

1. In interactive mode, verify cloud MCP tools are available:

claude
▎ list your available MCP tools
Cloud MCP tools (mcp__claude_ai_Slack__*, mcp__claude_ai_Gmail__*, etc.) appear as deferred tools and
work correctly.

1. In non-interactive mode, run the same query:

claude -p "list your available MCP tools"
Result: Zero MCP tools appear. Only built-in deferred tools are listed.

1. Alternatively, invoke a skill that depends on cloud MCPs:

claude -p "/morning-brew"
Result: Fails because all mcp__claude_ai_* tools are missing.

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.80 (Claude Code)

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Xterm

Additional Information

_No response_