[Feature]: Add Glob tool to agent-creator for detecting existing agents

[sjnims]

Problem or Need

The agent-creator agent has tools: Write, Read but lacks Glob for discovering existing agents in the agents/ directory.

The edge cases section (line 185) mentions:

Conflicts with existing agents: Note conflict, suggest different scope/name

However, without Glob, the agent cannot proactively scan for existing agent files to detect naming conflicts before writing. It would need to rely on:

• The user mentioning existing agents
• Read failing on a specific path (reactive, not proactive)

Proposed Solution

Add Glob to the tools list:

tools: Write, Read, Glob

This would allow the agent to:

• Check if agents/ directory exists before attempting to create it
• List existing agent files to detect naming conflicts proactively
• Provide better conflict warnings with specific existing agent names

Which component would this affect?

Agent

Specific Component (if applicable)

agent-creator agent (plugins/plugin-dev/agents/agent-creator.md)

Alternatives Considered

1. Leave as-is - The agent works, and conflict handling may be rare
2. Add Bash instead - Could use ls but Glob is more appropriate and follows least-privilege better
3. Rely on loaded skill - The agent loads agent-development skill, but skills provide knowledge not tool access

Additional Context

Found during comprehensive agent review against Claude Code plugin subagent best practices.

Current tools line (line 44):

tools: Write, Read

Proposed change:

tools: Write, Read, Glob

The addition of Glob is minimal and follows the principle of least privilege while enabling the conflict detection functionality mentioned in the edge cases.

How important is this feature to you?

Low - Just a suggestion

[sjnims]

PR submitted: #130