SubagentStop

SubagentStop is a hook for coding agents from babamba2/superclaude-for-sap. Its token cost is not measured, scanned A, a copy of SessionStart, MIT.

A hook that runs when a subagent finishes. A subagent is a helper agent working on part of a larger task.

In plain words
What is it for?
Use it to track completed subagents and run a deliverables check after each one stops.
Why use it?
It lets the system record the helper's completion and check whether the expected deliverables are present.

Hook

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the sc4sap plugin — 14 skills, 26 agents, 11 hooks, 1 MCP server shipped together

One of 11 entries in hooks.json — they are configured in one file and arrive together.

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add babamba2/superclaude-for-sap
Claude Code
/plugin install sc4sap

Or install sc4sap, the plugin that ships this one along with the rest of its 14 skills, 26 agents, 11 hooks, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for SubagentStop

README.md
[![agentmods](https://agentmods.dev/badge/hooks/babamba2/superclaude-for-sap/subagent-stop.svg)](https://agentmods.dev/hooks/babamba2/superclaude-for-sap/subagent-stop)
Your own site
<a href="https://agentmods.dev/hooks/babamba2/superclaude-for-sap/subagent-stop"><img src="https://agentmods.dev/badge/hooks/babamba2/superclaude-for-sap/subagent-stop.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin 81% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

SubagentStop scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the commands this hook runs, not an audit. A hook is shell that executes on your machine at the event it names, which is why every command in it is printed with what was found.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

81% identical to SessionStart — 31 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

hooks/hooks.json · 19 lines

What it actually says

{
  "SubagentStop": [
    {
      "matcher": "*",
      "hooks": [
        {
          "type": "command",
          "command": "node \"$CLAUDE_PLUGIN_ROOT\"/scripts/run.cjs \"$CLAUDE_PLUGIN_ROOT\"/scripts/subagent-tracker.mjs stop",
          "timeout": 5
        },
        {
          "type": "command",
          "command": "node \"$CLAUDE_PLUGIN_ROOT\"/scripts/run.cjs \"$CLAUDE_PLUGIN_ROOT\"/scripts/verify-deliverables.mjs",
          "timeout": 5
        }
      ]
    }
  ]
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 19 lines scan A fd34417516d7

Subscribe to this mod's changes

SubagentStop is a hook published in the GitHub repository babamba2/superclaude-for-sap (53 stars, last pushed 13d ago), licensed MIT. Its token cost is not measured: a hook is shell that never enters the context. A static security scan graded it A with 0 findings. It is 81% identical to SessionStart, differing in 31 lines, and is treated as a copy.