Split frontend and backend work between two agents

A poster used Claude Code for the frontend and Codex for the backend while sharing one live workspace to cut down on handoff work.

Done with Claude CodeCodex· Intermediate· Sep 2026

What they did
They ran Claude Code on frontend tasks and Codex on backend tasks at the same time for 15 days. Both agents worked inside Tutti, which let them see the same files, task results, and current context. Instead of restating the job each time, they passed task cards back and forth, used @ references to pull earlier Claude conversations into Codex, and sometimes borrowed a teammate’s agent that already had MCP set up.
How it went
They said the biggest benefit was less coordination overhead. The board made it easy to track work that was in progress, done, failed, or stopped, and they could jump back to the last run step after a failure. They also felt two weeks was not long enough to fully test the approach, and borrowing another agent was less helpful for solo async work.
Tips
Start forwarding task cards right away so each handoff stays short. If you can, borrow the agent with the best MCP setup already in place, since that configuration carries over.

Try it yourself with Claude Code

You are helping me split a project across two agents. Treat [frontend folder] as your area and [backend folder] as the other agent’s area. First, write a brief shared contract in [file path] that lists the API routes, request/response shapes, and any assumptions both sides need. Then build the frontend against that contract and stop once it works with a mock backend. Before you do anything irreversible, like deleting files, submitting changes, or making payments, pause and ask for my approval. At the end, tell me exactly what the backend agent must match.

Fill in the [brackets]. Agents can make mistakes, so review anything before it is sent, paid or deleted.

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