agentmods.dev

RuView: Hook for Claude Code

.claude/settings.json

SubagentStart is a hook for Claude Code from ruvnet/RuView. Its token cost is not measured, scanned A, original, MIT.

A hook that runs a Node.js command whenever a subagent starts. A subagent is a smaller agent process launched to handle part of a larger task.

In plain words
What is it for?
Use it to run a status check or other project-defined setup when a subagent begins work.
Why use it?
It gives the project a fixed place to react to new subagents starting, without relying on someone to trigger the command manually.

Hook for Claude Code

Written for Claude Code: $CLAUDE_PROJECT_DIR variable.

This is ruvnet/RuView's own configuration. It tells Claude Code how to work on RuView itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything RuView configures →

One of 9 entries in settings.json upstream. Installing this one merges just its entry into your config; the other 8 are separate, each on its own page.

not rated 99krepo +1.2k today A scan ✓ AI review tokens not measured original MIT
View source ↗ ruvnet/RuView cognitum.one
About the project

RuView is a WiFi sensing platform that uses disturbances in radio signals, captured by low-cost ESP32 sensors, to detect presence, movement, breathing, and heart rate without cameras or wearables. It is intended for spatial monitoring and smart-home integrations. The catalogue add-ons support workflows for operating and integrating RuView.

ruvnet/RuView · 98,528 stars · on GitHub · cognitum.one

Reuse

Borrowing it

Nothing to install: this file belongs to ruvnet/RuView. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/ruvnet/RuView/main/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/ruvnet/RuView

Made for: Claude Code.

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 SubagentStart

README.md
[![agentmods](https://agentmods.dev/badge/hooks/ruvnet/ruview/subagent-start/github.svg)](https://agentmods.dev/hooks/ruvnet/ruview/subagent-start)
Your own site
<a href="https://agentmods.dev/hooks/ruvnet/ruview/subagent-start"><img src="https://agentmods.dev/badge/hooks/ruvnet/ruview/subagent-start/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for SubagentStart

Your own site · 80×15
<a href="https://agentmods.dev/hooks/ruvnet/ruview/subagent-start"><img src="https://agentmods.dev/badge/hooks/ruvnet/ruview/subagent-start.svg" alt="Reviewed on agentmods" width="80" 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. A grade says what 26 rules found in the file — not that it is safe. ✓ AI security review Fable 5.1 · 7 Sept 2026 📄 Read the review
Origin original No closer match found in the catalogue.
Security

Grade A, and why

SubagentStart 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 1mo 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

Copies of this mod

1 near-identical copy found in the catalogue:

.claude/settings.json · 13 lines

What it actually says

{
  "SubagentStart": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "node \"$CLAUDE_PROJECT_DIR/.claude/helpers/hook-handler.cjs\" status",
          "timeout": 3000
        }
      ]
    }
  ]
}
Same file

What else settings.json configures

This page is one entry in a file that holds 9. Installing the file brings all of them; each is measured and scanned on its own page.

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. 1mo ago First seen · 13 lines scan A ca30002482f8

Subscribe to this mod's changes

SubagentStart is a hook published in the GitHub repository ruvnet/RuView (98,528 stars, last pushed today), 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 2026-09-03.

denseposeesp32monitoringrfwifiwifi-security
Related

Other hooks, from other repositories

SessionStart

Runs when a session starts, executing codinfy-agent-monitor.js via node. From bakalagoin/codinfy-agent-monitor.

bakalagoin/codinfy-agent-monitor · not measured

PreToolUse

Runs before the agent uses a tool for Bash tool calls, running an inline shell check. From apache/superset.

apache/superset · not measured

PreToolUse

Runs before the agent uses a tool, executing pre-write.sh and pre-bash.sh (2 commands). From anthropics/claude-cookbooks.

anthropics/claude-cookbooks · not measured

PostToolUse

Runs after a tool call finishes for Bash tool calls, executing hooks.sh via sh (3 commands). From anthropics/claude-plugins-official.

anthropics/claude-plugins-official · not measured

SessionStart

Runs when a session starts on startup, executing worktree-setup.mjs via bash with --show-toplevel. From openclaw/openclaw.

openclaw/openclaw · not measured

PreCompact

Runs before the context is compacted for manual and auto tool calls, running an inline shell check (2 commands). From ruvnet/ruflo.

ruvnet/ruflo · not measured