You'll noticeTier: how much it should matter to you
5Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
PluginsArea: what it touches
New FeaturesKind: in v2.1.286,
What probably matters to youSection of the release
What
A new built-in plugin, cc-plugin-you-should-know, ships with Claude Code. A plugin is an add-on that extends Claude Code. While Claude works, a side agent (a separate helper running alongside the main conversation) may offer one learning topic above the prompt box.
The suggestion offers choices such as Learn more, Knew this already and Dismiss. Learn more can produce an explanation or a private learning page.
The plugin is registered with defaultEnabled: !1, meaning it is off until you turn it on.
It is not registered when Claude Code runs with the local-agent entrypoint.
An availability check leaves out HIPAA, ZDR and LDR accounts and also checks one more gate.
It reads the environment variables CLAUDE_CODE_YOU_SHOULD_KNOW_DEBUG and USER_TYPE, and keeps an aboutOpen state value. Setting CLAUDE_CODE_YOU_SHOULD_KNOW_DEBUG shows a debug row for each check.
/plugin disable cc-plugin-you-should-know@builtin turns it off.
Why
This is a complete feature with its own prompt, but it stays off unless enabled and depends on account type and a gate. If you do turn it on and find the suggestions distracting, /plugin disable cc-plugin-you-should-know@builtin removes them.
Read from
Names in the bundlecc-plugin-you-should-know
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.
Added sinceA small documentation edit on Mods overview touched a line naming cc-plugin-you-should-know after this was published.| `cc-plugin-you-should-know` | Runs a side agent that watches your back while Claude works on longer tasks. When it finds something worth knowing that you might miss, it shows you a note above the prompt. | Disabled by default. Listed in …plugins/mods/overviewsee the edit
Confirmed sinceAnthropic's documentation has since written up cc-plugin-you-should-know, on Claude Code changelog.* Added You should know, an opt-in plugin where a side agent watches your back and flags things you or Claude might miss. Turn it on with `/plugin enable cc-plugin-you-should-know@builtin` (for first-party sessions with telemetry on)changelogsee the edit
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhat the extra availability check tests, and what it falls back to, is not clear.
Anthropic's documentation agreesAnthropic's documentation has since written up cc-plugin-you-should-know, on Claude Code changelog.
Anthropic's release notes agreeFixed /plugin's Discover tab showing a marketplace name unquoted in its "Checking … for new plugins" line when its rows already show that…