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Sweep 25 Sep 2026 · 19:33Z Build v2.1.283 504 read Stable v2.1.274 Latest v2.1.283 Next v2.1.283 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.280 ·

AGENTS.md-as-instructions plugin gate simplified, still off by default

The availability check for the built-in AGENTS.md plugin was simplified, but it's still off by default

Use it now Notable New Features
JSON All of v2.1.280
Use it nowTier: how much it should matter to you
4Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
AGENTS.mdArea: what it touches
New FeaturesKind: in v2.1.280,
What probably matters to youSection of the release
What

Claude Code includes a built-in plugin called agents-md that, when active, loads a project's AGENTS.md file and uses it as instructions (the same role CLAUDE.md normally plays). The internal check that decides whether this plugin is available has been simplified: it used to test an extra condition before checking anything else, and now it just checks the remote flag tengu_agents_md_mod, falling back to the plugin's own default-on setting if that flag isn't present.

This is an internal cleanup to how the plugin decides whether it can turn on, not a change to what the plugin does once it's active.

Why

Simplifying this check makes the plugin's availability easier to reason about and reduces the chance of an outdated precondition blocking it unnecessarily. Whether it actually turns on for a given account still depends on the tengu_agents_md_mod flag, which is controlled server-side.

Read from
Names in the bundleAGENTS.mdtengu_agents_md_mod
Feature flag
tengu_agents_md_mod Off by default, switched on for this account

The shipped code defaults this off, and the flag server returned on for the one account this site reads on this version. That is the reading that makes the entry above worth a second look, and it still says nothing about your account.

This account: on · anonymous baseline: on · compiled default in v2.1.280: off

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.280. It isn't a statement about your account. What a flag value here can and cannot tell you

Since it was published

The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.

Confirmed since Anthropic's documentation has since written up AGENTS.md, on How Claude remembers your project. Reading `AGENTS.md` directly requires Claude Code v2.1.277 or later. In some sessions Claude [can't read `AGENTS.md`](#when-agents-md-support-is-unavailable), so [import it from a `CLAUDE.md`](#share-one-file-with-other-coding-tools) there… memory see the edit
Added since A small documentation edit on Glossary touched a line naming AGENTS.md after this was published. A markdown file of project instructions you write for AI coding agents. If your repository has one and no [CLAUDE.md](#claude-md), Claude reads it as your project instructions without you adding a second file. You can change the **Project … glossary see the edit
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesA small documentation edit on Glossary touched a line naming AGENTS.md after this was published.

See this entry in the whole of v2.1.280 →

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