agentmods.dev

SubagentStop

A subagent-stop hook is an automatic script that runs when a named helper agent finishes. This one applies to agents called implementer and runs a JavaScript file with Node.js.

In plain words
What is it for?
Use it to trigger project-specific processing after an implementer subagent completes its work.
Why use it?
It automates a follow-up action after implementation work ends, so that step does not depend on someone remembering to run it manually.

Hook

10 4mo ago A scan tokens not measured original MIT
View the source file berrzebb/quorum
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add hooks/berrzebb/quorum/subagent-stop
Clone the repo
git clone --depth 1 https://github.com/berrzebb/quorum
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 original No closer match found 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 2d 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.

hooks/hooks.json · 14 lines

What it actually says

{
  "SubagentStop": [
    {
      "matcher": "implementer",
      "hooks": [
        {
          "type": "command",
          "command": "node ${CLAUDE_PLUGIN_ROOT}/platform/adapters/claude-code/subagent-stop.mjs",
          "timeout": 10000
        }
      ]
    }
  ]
}
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. 2d ago First seen · 14 lines scan A d0c2eac1b90c

Subscribe to this mod's changes

SubagentStop is a hook published in the GitHub repository berrzebb/quorum (10 stars, last pushed 4mo 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. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

ai-agentsauditclaude-codeclicodex
Related

Other hooks, from other repositories

PreCompact

Runs before the context is compacted, running bar-hook PreCompact. From bar181/bar-observatory.

bar181/bar-observatory · not measured

PostCompact

Runs after the context is compacted, running bar-hook PostCompact. From bar181/bar-observatory.

bar181/bar-observatory · not measured

Stop

Runs when the agent finishes a response, running bar-hook Stop. From bar181/bar-observatory.

bar181/bar-observatory · not measured

ConfigChange

Runs on the ConfigChange event, running bar-hook ConfigChange. From bar181/bar-observatory.

bar181/bar-observatory · not measured

PostToolUse

Runs after a tool call finishes for Edit, Write, MultiEdit, NotebookEdit and Bash tool calls, executing py-launch.sh via sh (6 commands). From AleksandarBisevac/claude-plugins.

AleksandarBisevac/claude-plugins · not measured

SessionStart

Runs when a session starts, executing ledger-activate.js via node. From eternal-roman/ledger.

eternal-roman/ledger · not measured