Quoting Thariq Shihipar
Why CEREBRO kept it
AGENTS.md config support in Claude Code, extensibility feature for agent configuration.
The text below is an automated extraction of the article at https://simonwillison.net/2026/Sep/18/thariq-shihipar/, stored verbatim in the public cerebro-vault repository. Copyright remains with the original publisher (simonwillison.net).
<blockquote cite="https://twitter.com/trq212/status/2101009392611278961"><p>We're adding support for AGENTS.md to Claude Code. </p> <p>Starting today in version 2.1.277, if there is no CLAUDE.md in a folder, Claude will check for and use AGENTS.md.</p> <p>AGENTS.md support is built off of Claude Code mods, our upcoming way to customize the Claude Code harness.</p> <p>This is a built-in mod, but you’ll be able to build custom versions of project instructions yourself as you’d like too.</p> <p>You can see <a href="https://github.com/anthropics/claude-code/tree/main/mods/agents-md">the source for
Backlinks
Appeared in 1 briefing