Multi-agent demos often hide the most difficult engineering problem.

Disclosure: I used AI tools to assist with research organization and drafting. I reviewed, edited, fact-checked, and source-checked this article before publication.

Spawning workers is not collaboration. A collaborative system must manage context, permissions, handoffs, concurrent state, and verification across humans and agents.

I am using Macro and forked the repository. On August 19, 2026, GitHub compare showed the fork's main identical to upstream main, 0 commits ahead and 0 behind, at 02c218308c462046ee54e6f275b8c0a371ee3f5a.

Important scope note: no local clone, modified branch, self-hosted deployment, or benchmark is claimed in this article. The walkthrough maps verified repository and documentation claims to a reproducible evaluation plan. It does not pretend I ran tests for which I have no artifact.