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Claude manages, Codex grinds

Make Claude the manager and Codex the grunt-work crew. X user describing his two-harness split.

what to steal

Use one model to plan architecture and another to churn through build steps.

Our takeaway from the source, not a quote.

HARNESSMODELSSKILLS · MCPS · KEEP Claude CodeClaude Code CodexCodex Claude Fable as managerClaude Fable as manager GPT-6 Astra on CodexGPT-6 Astra on Codex Claude builds core arc…Claude builds core architecture Claude manager sends b…Claude manager sends build-out steps to Codex agents
Drawn from this card's sourced fields. Amber = older model named by the source. Rose = cut or replaced.
merlin-claude-manager-codex-workers.toml
# Make Claude the manager and Codex the grunt-work crew
# source: https://x.com/Merlin412188240/status/2110430750809964852

[rig]
who     = "X user describing his two-harness split"
author  = "@Merlin412188240"
date    = "2026-10-14"

harness = ["Claude Code", "Codex"]
models  = ["Claude Fable (medium) as manager", "GPT-6 Astra (high) on Codex"]

[keep]
  - Claude builds core architecture
  - Claude manager sends build-out steps to Codex agents

Source: https://x.com/Merlin412188240/status/2110430750809964852 · checked 2026-10-14

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