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Anthropic adds support for the AGENTS.md instructions spec to Claude Code; OpenAI contributed AGENTS.md to the Agentic AI Foundation last year (Thomas Claburn/The Register)

This story is from 2026-09-18. It is preserved in the archive; the latest stories are on the live feed.

Thomas Claburn / The Register : Anthropic adds support for the AGENTS.md instructions spec to Claude Code; OpenAI contributed AGENTS.md to the Agentic AI Foundation last year Devs cheer relief from compatibility headache Anthropic on Friday surprised the developer community by supporting rival Open…

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Timeline · 3 reports

  1. 2026-09-19 13:31 · The Decoder
    Unity launches official plugins for Claude Code and OpenAI Codex to stop AI agents from using outdated tutorials
  2. 2026-09-19 01:40 · Techmeme
    Anthropic adds support for the AGENTS.md instructions spec to Claude Code; OpenAI contributed AGENTS.md to the Agentic AI Foundation last year (Thomas Claburn/The Register)
  3. 2026-09-18 18:15 · r/ClaudeAI
    Claude Code is getting native AGENTS.md support!

More stories

  1. Security researchers used Claude to help them hack into OpenAI — The Verge AI
  2. OpenAI ‘ethically hacked’ with help of Anthropic’s Claude chatbot — The Guardian AI
  3. A zero-click RCE flaw in AI coding agents could have exposed enterprise systems — InfoWorld AI
  4. Researchers used Claude to hack OpenAI — Ars Technica AI
  5. OpenAI discloses new ‘concerning’ model behaviour — Financial Times AI
  6. Pay $39.99 once to put ChatGPT, Claude, Gemini, and more in a single workspace for life — Mashable AI
  7. Unity launches official plugins for Claude Code and OpenAI Codex to stop AI agents from using outdated tutorials — The Decoder
  8. I ran Claude code and Codex in parallel for 15 days. Here's what I found. — r/AI_Agents

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