How to run multiple AI coding agents on one repository without chaos

A practical workflow for using Claude Code, Codex and Cursor Agent together — worktrees, conversation boundaries, permission habits and review — with or without BetterC0de.

Using one coding agent is easy. Using three on the same codebase is where people get burned: two agents edit the same file, one reverts the other's change, and you spend the afternoon in git diff. This is the workflow that has held up for us.

1. Plan with one agent, execute with several

Start a single conversation and ask for a plan, explicitly telling the agent not to edit yet:

Explain how this project is organized, identify its main entry points, and propose a plan for adding X. Wait for me before changing files.

Now you have a task list you can split. Independent tasks get their own agent; dependent ones stay sequential.

2. Worktrees, not just tabs

A conversation is a context boundary, not a file boundary. Two agents in the same working tree will overwrite each other. Give each parallel task a git worktree — a separate checkout on its own branch — and point one agent at each.

git worktree add ../repo-tests feature/tests
git worktree add ../repo-ui    feature/ui

In BetterC0de this is one click per conversation; the Agent view shows which worktree each chat is in.

3. Match the agent to the job

You do not have to, but it is nice to: Claude Code for the gnarly refactor, Codex for exhaustive test writing, Cursor Agent for UI iterations where the preview matters. Different vendors have different strengths and different sandboxing — use that.

4. Treat permissions as a review step

Every shell command and file write is a chance to catch a bad idea before it runs. Read the request; approve per call on unfamiliar repos, per session once you trust the task. BetterC0de shows every agent's requests in the same inline format so the habit transfers.

5. Review diffs, then let another agent review too

Before merging a worktree, read the diff yourself. Then — this is cheap and catches a lot — ask a different agent to review it:

Review the diff on branch feature/tests for correctness and missing cases. Do not edit; list findings.

Agents do not share memory, so the reviewer comes in with fresh eyes.

6. Keep conversations short and single-topic

Long mixed threads degrade every model. New task, new conversation. Paste a two-line summary if the next agent needs the previous decision.

None of this requires BetterC0de — it is just how we work. BetterC0de makes it one window instead of five. Try the beta.