agentmods.dev

SessionStart

A session-start hook that runs a Node.js script automatically when a coding session begins.

In plain words
What is it for?
It is for running the project's on-start.js setup script before work begins.
Why use it?
It removes the need to run the same setup or startup command manually at the beginning of each session.

Hook

5 3mo ago A scan tokens not measured copy · 100% Apache-2.0
View the source file itallstartedwithaidea/gemini-cli-googleadsagent
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/itallstartedwithaidea/gemini-cli-googleadsagent/session-start
Clone the repo
git clone --depth 1 https://github.com/itallstartedwithaidea/gemini-cli-googleadsagent
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 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 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.

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.

packages/cli/src/commands/extensions/examples/hooks/hooks/hooks.json · 12 lines

What it actually says

{
  "SessionStart": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "node ${extensionPath}/scripts/on-start.js"
        }
      ]
    }
  ]
}
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 · 12 lines scan A 30141bc1a11c

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository itallstartedwithaidea/gemini-cli-googleadsagent (5 stars, last pushed 3mo ago), licensed Apache-2.0. 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.

ai-agentcligeminigoogle-adsopen-sourceterminal
Related

Other hooks, from other repositories

PreToolUse

Runs before the agent uses a tool, executing claude_hook_adapter.py via python3 with --event, --audit and --db-path. From 90le/worker-rights-cn.

90le/worker-rights-cn · not measured

SessionStart

Runs when a session starts, running an inline shell check. From n24q02m/imagine-mcp.

n24q02m/imagine-mcp · not measured

SubagentStop

Runs when a subagent finishes, running an inline shell check. From ArdurAI/ardur.

ArdurAI/ardur · not measured

SessionEnd

Runs when a session ends, executing hook.sh via bash. From 6m1w/claude-sound-fx.

6m1w/claude-sound-fx · not measured

SessionStart

Runs when a session starts, executing first-run-hook.mjs via node. From dysfunc/ai-plugins-cc.

dysfunc/ai-plugins-cc · not measured

PostToolUse

Runs after a tool call finishes for Write and Edit tool calls, executing format_and_lint.sh. From supabase/supabase.

supabase/supabase · not measured