OpenAI Codex member calls for rethinking skills and prompts for GPT-6 Astra
On September 5, Eric Provencher (pvncher) of OpenAI's Codex team published "Rethinking skills and prompts for GPT-6 Astra," arguing that the prompt scaffolding accumulated for weaker models—skill files, AGENTS.md, task prompts—should be cleaned up now that GPT-6 Astra is available.
Confirmed
- The original post comes from pvncher (Eric Provencher, OpenAI Codex team).
- Core claim: coding agents have advanced so quickly that a year's worth of hand-written guidance is no longer necessary and has become a burden.
- Typical early-skill practices—forcing the model to read the entire repo and run tests frequently—needlessly consume context and are net-negative on GPT-6 Astra.
- The article systematically reviews three categories of instruction carriers, including Markdown-stored skill files that can bundle scripts, with usage guidance.
Why it matters
- A front-line model-vendor team member explicitly stating that scaffolding should shrink as models improve implies many existing agent projects need prompt and skill audits.
- Reshares and commentary from bloggers such as EyalToledano and AI寒武纪 show the community is re-examining the ROI of agent scaffolding as best practices enter a new iteration cycle.
2026-09-05 ~ 2026-09-06 · 5 related posts
- Episode 1: OpenAI Codex member calls for rethinking skills and prompts for GPT-6 Astra(2026-09-05, 5 posts)
- Episode 2: OpenAI's GPT-6 Astra prompting guide: trim your rules(2026-09-05, 3 posts)
- Episode 3: A Single Codex Prompt to Audit All Your Skills and AGENTS.md Files(2026-09-05, 2 posts)
- Episode 4: Cleaning Up AGENTS.md and Skills for the GPT-6 Astra Era(2026-09-06, 2 posts)
Primary sources
- [source] Rethinking skills and prompts for GPT-6 Astra: coding agent best practices are changing fast — pvncher · 2026-09-05
- Rethinking skills and prompts for GPT-6 Astra: old agent scaffolding is fading — EyalToledano · 2026-09-05
- Rethinking skills and prompts for GPT-6 Astra: coding agent best practices are shifting — iamrobotbear · 2026-09-05
- OpenAI researcher: old Skills now hurt GPT-6 Astra — audit and clean up your AGENTS.md — udmrzn · 2026-09-06
- GPT-6 Astra changes agent prompting: OpenAI's guide to cleaning up Skills and AGENTS.md — AI寒武纪 · 2026-09-06