SessionStart

SessionStart is a hook for Claude Code from jnMetaCode/superpowers-zh. Its token cost is not measured, scanned A, a copy of SessionStart, MIT.

A session-start hook configuration that runs a command when a session starts, is cleared, or is compacted. A hook is an automatic action triggered by one of these events.

In plain words
What is it for?
It is for running the project's session-start script during startup, session clearing, and context compaction.
Why use it?
It automates the superpowers-zh session-start routine instead of requiring a manual command.

Hook for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable.

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 superpowers-zh plugin — 21 skills, 1 hook shipped together

Good fit It is for running the project's session-start script during startup, session clearing, and context compaction.

Compare 6 hooks from other repositories ↓
About the project

superpowers-zh is a Chinese community edition of superpowers, a collection of practical skills and development methods for AI coding tools. It helps users apply workflows such as brainstorming, test-driven development, debugging, code review, and other programming tasks across supported coding agents. The catalogue add-ons are the project's translated and original skills, instructions, hook, and plugin components.

jnMetaCode/superpowers-zh · 8,323 stars · on GitHub · sp.aiolaola.com

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 jnMetaCode/superpowers-zh
Claude Code
/plugin install superpowers-zh

Made for: Claude Code.

Or install superpowers-zh, the plugin that ships this one along with the rest of its 21 skills, 1 hook.

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 SessionStart

README.md
[![agentmods](https://agentmods.dev/badge/hooks/jnmetacode/superpowers-zh/session-start/github.svg)](https://agentmods.dev/hooks/jnmetacode/superpowers-zh/session-start)
Your own site
<a href="https://agentmods.dev/hooks/jnmetacode/superpowers-zh/session-start"><img src="https://agentmods.dev/badge/hooks/jnmetacode/superpowers-zh/session-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 SessionStart

Your own site · 80×15
<a href="https://agentmods.dev/hooks/jnmetacode/superpowers-zh/session-start"><img src="https://agentmods.dev/badge/hooks/jnmetacode/superpowers-zh/session-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.
Origin 100% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

SessionStart 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

This is a copy

100% identical to SessionStart — 0 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 · 15 lines

What it actually says

{
  "SessionStart": [
    {
      "matcher": "startup|clear|compact",
      "hooks": [
        {
          "type": "command",
          "command": "\"${CLAUDE_PLUGIN_ROOT}/hooks/run-hook.cmd\" session-start",
          "shell": "bash",
          "async": false
        }
      ]
    }
  ]
}
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 · 15 lines scan A 9c4cd5a27fd6

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository jnMetaCode/superpowers-zh (8,323 stars, last pushed 8d 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 100% identical to SessionStart, differing in 0 lines, and is treated as a copy.