claude

cowork-pretooluse-shell-probe

Tests whether Cowork runs plugin-level PreToolUse hook commands through cmd.exe (like SessionStart) or a POSIX shell, and whether the inline tool_input=$(cat)|grep&&echo-block pattern actually blocks the bash tool.

0 on GitHubby kazukinagatav0.1.0MITupdated 1 month ago
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Plugin cowork-pretooluse-shell-probe from marketplace verifier-mp in kazukinagata/analyzing-claude-plugin. Commands read from the repo's manifest — 1 month ago.

This plugin runs code on your machine — its hooks fire automatically on events like tool use. The exact commands are listed below; read them before installing.

What it installs

Skills (1)

  • run-pretooluse-probe

    Triggers the plugin-level PreToolUse hooks by running a sentinel bash command, to test (via session export) whether Cowork runs PreToolUse hook commands through cmd.exe or a POSIX shell, and whether the inline block pattern actually blocks the bash tool.

Hooks (6)

  • PreToolUse

    echo PRE_CONTROL=static_no_var

  • PreToolUse

    echo PRE_HOME=$HOME

  • PreToolUse

    echo PRE_DQ="double-quoted"

  • PreToolUse

    echo PRE_NUL=$NO_SUCH_VAR_EXPECT_EMPTY

  • PreToolUse

    bash -c 'echo PRE_BASH_HOME=$HOME EXEC_HOST=$(hostname)'

  • PreToolUse

    tool_input=$(cat); echo "$tool_input" | grep -q 'PROBE_BLOCK_TRIGGER' && echo '{"decision":"block","reason":"PRE_S5_PATTERN blocked"}' || true

View source on GitHub

Problems found in this repo's manifests

  • "cowork-mcp-tool-hook-probe" points to ./cowork-mcp-tool-hook-probe, which doesn't exist in the repo — install will fail

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claude & codex plugins28 plugins