Codex Orchestrator

Claude–Codex Orchestrator Plugin

A Claude Code plugin for coordinating OpenAI Codex agents. Claude owns the plan and verifies the
work; Codex provides optional planning input and handles scoped implementation and review through
its CLI.

What It Does

Use this plugin when you want Claude Code to supervise Codex rather than manually relay context
between the two tools. It helps Claude:

- assign or resume scoped Codex agents;
- request independent Codex planning or plan review when it materially reduces risk;
- monitor active Codex agents;
- preserve exact prompts, event streams, and handoffs;
- independently verify results and record consequential decisions.

Why This Approach?

1. Different Models Catch Different Mistakes

Claude and Codex come from different model families and harnesses, so they can catch different mistakes.
Work on heterogeneous ensembles—including LLM-Blender, Mixture-of-Agents, and FrugalGPT—supports combining distinct models while warning against blind majority agreement.
This plugin asks Claude to resolve disagreements from inspectable evidence rather than model votes.

2. Claude Maintains Global Context

Claude tracks the overall goal, agent history, verification, and decisions while Codex receives
focused execution tasks. Anthropic's
1M context release supports using Claude for this broader
context.

Large context windows are not enough on their own.
Context Rot shows that performance can decline as context grows.
Durable prompts, handoffs, repository state, and journal entries preserve the context that matters.

3. Native Harnesses Matter

Agent performance depends on more than the underlying model.
Shell and file access, session history, approvals, sandboxing, event streams, and harness-specific prompting all affect the result.
The…