Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.277 ·

A tool-input schema case (C4) was removed from a validator

A tool-input validation case for task_id/agentId/bash_id fields was removed from a validator

TierUnder the hoodhow much it should matter to you
Useful1my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaTool Validationwhat it touches
KindInternal Changesin v2.1.277,
Under the hood

A tool-input validation case for task_id/agentId/bash_id fields was removed from a validator

What

A validator function that previously had a specific case for handling input shapes with task_id, agentId, bash_id, block, and timeout fields no longer has that case. That input type now falls through to the validator's default, which returns false.

Why

An earlier entry described a related but separate safety check for coordinator Bash calls involving these same fields (agentId, bash_id) that existed in code but was compiled off. This finding is about a different piece, a validation case being deleted from a validator, so this specific input shape is no longer recognized as valid by this function.

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 this removal is connected to the previously-described coordinator Bash safety check isn't established by the finding.

See this entry in the whole of v2.1.277 →