You'll notice
Useful3 Signal2
If a permission hook empties a tool call, you now get an explicit failure instead of silence.
What's wrong with this entry?
Anonymous. No account, no email.
What
If a permission hook or handler rewrites a tool call until it is empty, Claude Code now returns an explicit failure explaining that nothing was sent, rather than quietly issuing an empty request.
Details
- The message names both the send and subscribe cases.
Evidence
A permission handler rewrote this call so that nothing was left to send or subscribe; nothing was sent.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Related
Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.
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v2.1.234
SessionEnd hooks lose the
bypass_permissions_disabledreasonBoth mention hook
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v2.1.236
Hooks and Ctrl-C go quiet once shutdown has started
Both mention hook
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v2.1.236
Shutdown seals transcript writes and gives SessionEnd hooks more time
Both mention hook