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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.274 ·

New built-in 'diff' and 'claude-test' plugins added

Claude Code now ships built-in 'diff' and 'claude-test' plugins, loaded through a new lazy plugin-loading mechanism

Group of 2 Use it now Notable No documentation found New Features
JSON All of v2.1.274
Use it nowTier: how much it should matter to you
5Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
TestingArea: what it touches
New FeaturesKind: in v2.1.274,
What probably matters to youSection of the release

Unclear Whether the tengu_mellow_hollerith gate is switched on for any account is unread, so nothing can be said about its status.

What

  • Two new built-in plugin bundles, named diff and claude-test, are now loaded alongside the existing built-in plugins (sec-default, agents-md, plugin-authoring, tips).
  • The claude-test plugin adds skills (claude-test, claude-test-execute, claude-test-draft), agents (explorer, author, runner), and a browser automation server so Claude Code can run plain-language specs from .claude-test/specs/ against your local dev server in a real headless browser and report pass/fail results with screenshots, via a new /claude-test command.
  • Built-in plugin registration itself was refactored from immediate registration calls into a named, lazy-loading pattern.

Why This adds a ready-to-use way to write and run browser-based tests for your app directly from Claude Code, without installing a separate plugin.

Read from
Names in the bundle/claude-test
What has happened since
Flag reading moved The flag server now returns nothing at all, having stopped carrying it for tengu_mellow_hollerith, read as this 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.
Flag reading moved The flag server now returns off for tengu_mellow_hollerith, read as this 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.
Flag reading moved The flag server now returns nothing at all, having stopped carrying it for tengu_mellow_hollerith, read as this 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.
Flag reading moved The flag server now returns off for tengu_mellow_hollerith, read as this 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.
Flag reading moved The flag server now returns nothing at all, having stopped carrying it for tengu_mellow_hollerith, read as this 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.
Flag reading moved The flag server now returns off for tengu_mellow_hollerith, read as this 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.
Flag reading moved The flag server now returns nothing at all, having stopped carrying it for tengu_mellow_hollerith, read as this 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.
Flag reading moved The flag server now returns off for tengu_mellow_hollerith, read as this 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.

See this across every release →

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 doubtWhether the tengu_mellow_hollerith gate is switched on for any account is unread, so nothing can be said about its status.
The name it cites is new in this buildNew in this build: tengu_mellow_hollerith

See this entry in the whole of v2.1.274 →

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