Most discussions around multi-agent software development focus on chat interfaces, but running agents concurrently requires treating them like distributed processes. When multiple models have write access to the same repository, the primary failure mode is state corruption. Models overwrite dependencies, invalidate imports, and produce messy merge conflicts.

To build a reliable workflow using Claude Code, Codex, and Groq, the system needs a strict control plane. Each model must have isolated execution boundaries, explicit task contracts, and automated verification before any change hits the integration branch.

1. Role Specialization and Context Boundaries

Assigning distinct responsibilities keeps models from stepping on each other:

Claude Code (Lead Architect): Triggered via CLI in a subprocess. Claude reads the repository structure, defines the API contracts, writes complex backend logic, and handles the final merge verification.

Codex (Frontend Builder): Triggered via API.…