A new built-in agents-md plugin can load AGENTS.md as project instructions instead of, or alongside, CLAUDE.md
A new bundled plugin called "agents-md" can load an AGENTS.md file as project instructions instead of, or together with, CLAUDE.md. This is controlled by a projectInstructions user config option with four values:
claude(the default): useCLAUDE.mdonlyagents-fallback: fall back toAGENTS.mdwhen there's noCLAUDE.mdboth: use both filesnone: use neither
When a project has an AGENTS.md but no CLAUDE.md and the setting is left at claude, Claude Code shows a one-time toast suggesting the user switch the setting to agents-fallback to load it.
This gives projects that already use the AGENTS.md convention a way to have Claude Code pick it up as project instructions.
tengu_agents_md_mod Not enough to sayNothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.
This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.274: 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 v2.1.274. It isn't a statement about your account. What a flag value here can and cannot tell you
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.
* **Before you type anything**: CLAUDE.md, auto memory, MCP tool names, and skill descriptions all load into context. [AGENTS.md files](/docs/en/memory#agents-md) can load too, on their own or alongside CLAUDE.md. Your own setup may add mo…context-window see the edit
* Added AGENTS.md support: in a project with no CLAUDE.md, Claude Code reads AGENTS.md instead; change it under "Project instructions" in `/config` (not yet on Bedrock, Vertex or Foundry)changelog see the edit
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Whether this plugin is active for any given account is unknown, since nothing has been read yet about the `tengu_agents_md_mod` gate.
Anthropic's documentation has since written up AGENTS.md, on Claude Code changelog.