SessionEnd

An end-of-session hook that runs a Node.js command when a coding session finishes. It uses a hook orchestrator found in the project or configured plugin location.

In plain words
What is it for?
Use it to run shared orchestration logic after sessions, as long as the required hook file can be located.
Why use it?
It ensures the configured cleanup or reporting workflow is triggered automatically when the session ends.

Hook

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/tellang/triflux/session-end
Clone the repo
git clone --depth 1 https://github.com/tellang/triflux
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 1 finding. Scan, not verified.
Origin 95% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

SessionEnd scanned grade A with 1 finding 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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

"command": "node -e \"const fs=require('node:fs'),os=require('node:os'),path=require('node:path'),cp=require('node:child_process');const roots=[];try{roots.push(fs.readFileSync(path.join(os.homedir(),'.claude','scripts',
Origin

This is a copy

95% identical to SessionStart — 4 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 · 14 lines

What it actually says

{
  "SessionEnd": [
    {
      "matcher": "*",
      "hooks": [
        {
          "type": "command",
          "command": "node -e \"const fs=require('node:fs'),os=require('node:os'),path=require('node:path'),cp=require('node:child_process');const roots=[];try{roots.push(fs.readFileSync(path.join(os.homedir(),'.claude','scripts','.tfx-pkg-root'),'utf8').trim())}catch{}roots.push(process.env.PLUGIN_ROOT,process.env.CLAUDE_PLUGIN_ROOT);try{roots.push(cp.execFileSync('git',['rev-parse','--show-toplevel'],{encoding:'utf8',stdio:['ignore','pipe','ignore']}).trim())}catch{}roots.push(process.cwd());const root=roots.find(r=>r&&fs.existsSync(path.join(r,'hooks','hook-orchestrator.mjs')));if(!root){console.error('[triflux hook] cannot locate hooks/hook-orchestrator.mjs');process.exit(1)}const child=cp.spawnSync(process.execPath,[path.join(root,'hooks','hook-orchestrator.mjs')],{stdio:'inherit',env:process.env,windowsHide:true});process.exit(child.status??(child.signal?1:0));\"",
          "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. 2d ago First seen · 14 lines scan A 8c624f2abe8c

Subscribe to this mod's changes

SessionEnd is a hook published in the GitHub repository tellang/triflux (7 stars, last pushed 12d 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 1 finding (runs shell commands). It is 95% identical to SessionStart, differing in 4 lines, and is treated as a copy.