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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.257 ·

Skills reject top-level PreToolUse/PermissionRequest hooks in frontmatter

A skill declaring permission hooks outside the hooks object no longer loads them or its allowed-tools.

TierYou'll noticehow much it should matter to you
Useful2my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaSkillswhat it touches
KindBug Fixesin v2.1.257,
You'll notice

A skill declaring permission hooks outside the hooks object no longer loads them or its allowed-tools.

Skill and plugin-skill loaders now detect when a skill's frontmatter declares PreToolUse or PermissionRequest hooks outside the proper hooks object, and refuse to load that skill's hooks or allowed-tools rather than silently misapplying them.

Read from
Names in the bundleallowed-tools
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 allowed-tools, on Error reference. * `Shell command permission check failed for pattern "..."`: the command's permission check didn't allow it. [Permission checks on injected commands](/docs/en/skills#permission-checks-on-injected-commands) covers which results abort in eac… errors see the edit
Added since A small documentation edit on Fullscreen rendering touched a line naming allowed-tools after this was published. * Rules you passed with [`--allowed-tools` or `--disallowed-tools`](/docs/en/cli-reference#cli-flags), and your `--agent`, `--agents`, `--append-system-prompt`, and `--system-prompt-snapshot` flags fullscreen 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 Fullscreen rendering touched a line naming allowed-tools after this was published.

See this entry in the whole of v2.1.257 →

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