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:lineto 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 installRepository: 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.
📖 Read the full source: r/ClaudeAI
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