Permission prompt: add global 'Yes, don't ask again' option (not scoped to project folder)

Feature Request

When Claude Code prompts for permission to use an MCP tool, the options are:

1. Yes
2. Yes, and don't ask again for <tool> in <current project folder>
3. No

Request: Add a fourth option:

Yes, and don't ask again (globally)

This would write the permission to ~/.claude/settings.json (user-level) instead of the project-level settings file, so it applies across all projects and folders.

Motivation

Currently, to grant a global permanent permission, users must manually edit ~/.claude/settings.json and add the tool to the permissions.allow array. This is a reasonable workaround but adds friction — especially for MCP tools used across many projects (e.g. Jira, PagerDuty).

The existing "don't ask again" option is useful but limited to one project. Many MCP tools are workspace-agnostic (e.g. Jira transition, Slack messaging) and there's no reason to re-grant permission per project.

Proposed Behavior

• Option 2 remains: writes to .claude/settings.json in the current project directory (existing behavior)
• New option: writes to ~/.claude/settings.json (global user settings)

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>