claude

cowork-subagentstart-probe

Does a plugin-level SubagentStart hook fire on Cowork, and does its JSON additionalContext reach the subagent? Compares plain stdout, matcher-less JSON and matcher-scoped JSON in one launch.

0 on GitHubby kazukinagatav0.1.0MITupdated 1 month ago
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Plugin cowork-subagentstart-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)

  • sa-check

    SubagentStart hook の additionalContext 注入が Cowork でも動くかを実機検証する probe。sa-reporter subagent を起動し、subagent 側に SA-JSON / SA-MATCHED / SA-PLAIN が届いたかを報告させ、main session 側の SA-EXECLOG（hook が実際に走ったか）と突き合わせる。

Subagents (1)

  • sa-reporter

    SubagentStart hook の additionalContext が subagent の context に実際に届くかを確認するだけの probe agent。呼ばれたら自分の context 内の SA-* マーカーをそのまま報告する。

Hooks (7)

  • SessionStart

    echo 'SA-CTL sessionstart_shell_form=alive'

  • SessionStart

    echo

  • SubagentStart

    echo 'SA-PLAIN plain_stdout=fired'

  • SubagentStart

    "${CLAUDE_PLUGIN_ROOT}/hooks/emit-json.sh"

  • SubagentStart

    "${CLAUDE_PLUGIN_ROOT}/hooks/emit-matched.sh"

  • SubagentStop

    echo 'SA-STOP subagentstop=fired'

  • PostToolUse

    "${CLAUDE_PLUGIN_ROOT}/hooks/replay-log.sh"

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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