PowerShell's -Command treats trailing argv entries as part of the
command-line text rather than as $args, so a hook with an inline
command and an arg template raised a parser error. Wrap inline commands
in a scriptblock with @args splat, and pipe $input into the block so
{{body.*}} arg templates AND stdin JSON both reach the script. Verified
end-to-end against ping, bearer (good/bad/missing), HMAC (good/bad/missing),
IP allowlist deny, async 202, and stdin+template combined.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
justin
ebac2c7c04