Open-source Codex skill: Astra/Sol orchestrator with Luna subagents

Melvin Vivas · X post · 2026-09-26 · Open on X

Topics: AI Agents, Tool Use & MCP, AI Dev Tools & Productivity · Level: intermediate

Summary

The creator shares his open-source GitHub repo, which has a skill and setup for running Astra or Sol as an orchestrator in Codex with Luna as subagents. The repo has reached 1.6k stars. It is a ready-made template for a multi-agent coding workflow.

Key points

• The repo donvito/codex-astra-luna-orchestrator sets up Astra or Sol as the orchestrator and Luna for subagents in Codex.
• It is packaged as a Codex skill plus setup instructions.
• It is popular, with about 1.6k GitHub stars.
• The pattern is a strong orchestrator model that delegates to a cheaper subagent model.

Resources mentioned

• donvito/codex-astra-luna-orchestrator · repo · github.com · free
  The creator's Codex skill for an orchestrator-plus-subagents setup (Astra orchestrator, Luna subagents), configured through config.toml.
  Also in: Codex Orchestrator Pattern: Astra/Sol Orchestrator with Luna Subagents (Melvin Vivas on X · notes), Cost-Efficient Codex Subagents: Astra/Sol Orchestrator + Luna Workers (Melvin Vivas on X · notes), Codex Orchestrator v0.2.1: GPT-6 Sol orchestrator with Luna subagents (Melvin Vivas on X · notes), Orchestrator/Subagent Patterns: Astra-Luna Skill vs Fusion and Advisor (Melvin Vivas on X · notes) and 27 more
• OpenAI Codex · tool · openai.com · paid
  OpenAI's coding agent. In the diagram it writes code, fixes review findings and drives the build loop. The creator also used it to make this video.
  Also in: An agent bot that installs and drives Codex on its own (Melvin Vivas on X · notes), Asking a Coder bot to install Codex (Melvin Vivas on X · notes), Sign in with ChatGPT: Setting Usage Limits for Each App (Melvin Vivas on X · notes), Codex Cloud Environments Must Be Saved & Published Before Use (Melvin Vivas on X · notes) and 240 more

Try this

• Install the codex-astra-luna-orchestrator skill to try an orchestrator and subagents workflow in Codex.