DevOpsSeptember 18, 2026
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Anthropic caves to OpenAI's agent standard
Anthropic has added support for the AGENTS.md specification to Claude Code. The spec had previously been contributed by OpenAI to an agentic AI foundation, making the two vendors' tooling more compatible.
#Anthropic#OpenAI#Claude Code#AGENTS.md#developer tools
š„ What happened
Anthropic quietly added support for OpenAI's AGENTS.md spec to Claude Code in version 2.1.277. If no CLAUDE.md exists in a folder, Claude now falls back to AGENTS.md ā ending a long-standing format schism.
š” Why it matters
Over 60,000 open source projects already use AGENTS.md, which OpenAI donated to the Linux Foundation in 2025. Devs who juggled two parallel instruction files (often via symlinks) can finally stop maintaining duplicate context.
ā” Our take
A rare, sensible ceasefire in the agent-standards war. Anthropic's spec separatism was never worth the developer friction ā good riddance.
The title, summary and analysis of this item were produced automatically by an AI system and have not been editorially reviewed. They may contain errors, bias or omissions ā when in doubt, read the linked original source.
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