Advisor: A /advisor Slash Command for Claude Code That Runs Opus + Parallel Sonnet Runners

Reddit user Vzwjustin built advisor — a /advisor slash command for Claude Code that runs Opus as a 'strategist' coordinating multiple Sonnet (Opus's hands) runners reading files in parallel.

How It Works

• Opus does a structural pass with Glob+Grep, ranks files P1–P5
• Spawns Sonnet runners based on codebase size (not a hardcoded pool)
• Writes a custom prompt for each runner tailored to its file batch
• Runners read, find bugs, and talk back to Opus live — they can ask questions mid-investigation; Opus can redirect drift; every finding gets verified the moment it lands

Key Technical Details

• No external API calls — pure Claude Code native agent tools
• Opus reads the cited file:line to verify each finding before confirming
• Zero runtime dependencies (just a CLI that builds prompts)
• Scope drift caught with a two-strikes rotation rule

Results

Ran on its own codebase and caught 6 real bugs, including:

• A bidi-character 'trojan source' gap in the prompt sanitizer
• A missing ReDoS guard on one of four glob-compile branches

Installation

uvx --from advisor-agent advisor install

Repository: github.com/vzwjustin/advisor

Who it's for: Developers using Claude Code who want to reduce manual review on first pass — not a replacement for human review.