agentmods.dev

SessionStart

SessionStart is a hook for Claude Code from labzink/cc-probeline. Its token cost is not measured, scanned A, original, MIT.

A startup check that looks for the cc-probeline program when a coding session begins.

In plain words
What is it for?
Checking whether cc-probeline is installed before using its status-line features.
Why use it?
It warns you if the program is missing, so you know why its enhanced status display may not appear.

Hook for Claude Code

Written for Claude Code: SessionStart hook event.

Part of the cc-probeline plugin — 3 commands, 1 hook shipped together

not rated 12repo 2mo ago A scan tokens not measured original MIT

Good fit Checking whether cc-probeline is installed before using its status-line features.

Compare 6 hooks from other repositories ↓
Install with agentmods
npx agentmods add hooks/labzink/cc-probeline/session-start
View source ↗ labzink/cc-probeline
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.

Clone the repo
git clone --depth 1 https://github.com/labzink/cc-probeline

Made for: Claude Code.

Or install cc-probeline, the plugin that ships this one along with the rest of its 3 commands, 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/labzink/cc-probeline/session-start/github.svg)](https://agentmods.dev/hooks/labzink/cc-probeline/session-start)
Your own site
<a href="https://agentmods.dev/hooks/labzink/cc-probeline/session-start"><img src="https://agentmods.dev/badge/hooks/labzink/cc-probeline/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/labzink/cc-probeline/session-start"><img src="https://agentmods.dev/badge/hooks/labzink/cc-probeline/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 original No closer match found 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 2mo 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 · 13 lines

What it actually says

{
  "SessionStart": [
    {
      "matcher": "startup",
      "hooks": [
        {
          "type": "command",
          "command": "command -v cc-probeline >/dev/null 2>&1 || printf '%s' 'The cc-probeline plugin is enabled but its binary is not installed yet, so the status line will not show its enhanced view. You may let the user know they can run /cc-probeline-install to install it (it asks before running any install command). Do not install anything without the user asking.'"
        }
      ]
    }
  ]
}
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. 2mo ago First seen · 13 lines scan A 8fc1b5177195

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository labzink/cc-probeline (12 stars, last pushed 2mo 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 2026-08-30.

Claude Codeaianthropicclaudeclicost-tracking
Related

SessionStart compared with hooks from other repositories

SessionStart next to 6 hooks from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
SessionStartlabzink/cc-probelineHook122mo agoMITA—Claude Code
SessionStartivan-magda/claude-code-plugin-templateHook694mo agoMITA—Claude Code
PostToolUsesupabase/supabaseHook115kyesterdayApache-2.0A—Claude Code
SessionStartsupabase/supabaseHook115kyesterdayApache-2.0A—Claude Code
SessionStartgoogle-gemini/gemini-cliHook109kyesterdayApache-2.0A—Claude Code
PreToolUseapache/supersetHook75kyesterdayApache-2.0A—Claude Code
PreToolUseanthropics/claude-cookbooksHook54k2d agoMITA—Claude Code