Last Tuesday I sat down to audit every dev project I'd written over the past few years. 77 of them. Old courier-logistics monorepos, abandoned starters, a clinical reasoning engine, half a dozen Telegram bots, a SaaS framework I keep reusing, two startups, a Rust process manager. Different stacks, different ages, different employers, different states of git hygiene.

I gave the job to four Claude Code agents working in parallel. They were done in about 90 minutes.

Below is the pattern they used, and why a version of it now runs inside a 2,200-commit production codebase at my day job.

Why one agent isn't enough

Single-agent Claude Code is fine until you hit one of three walls.