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SessionStart

SessionStart is a hook for Claude Code from DanceNitra/inspeximus. Its token cost is not measured, scanned A, a copy of PostToolUse, MIT.

A session-start hook that runs a Python command when a coding session begins. A hook is an automatic action triggered by an event such as opening a session.

In plain words
What is it for?
Use it to start the specified `inspeximus` process whenever a session starts.
Why use it?
It removes the need to run that setup command manually at the start of each session.

Hook for Claude Code

Written for Claude Code: SessionStart hook event.

Part of the inspeximus plugin — 5 hooks, 1 MCP server shipped together

One of 5 entries in hooks.json upstream. Installing this one merges just its entry into your config; the other 4 are separate, each on its own page.

not rated 8repo changed yesterday A scan tokens not measured copy · 88% MIT

Good fit Use it to start the specified inspeximus process whenever a session starts.

Compare 6 hooks from other repositories ↓
Install with agentmods
npx agentmods add hooks/dancenitra/inspeximus/session-start
View source ↗ DanceNitra/inspeximus dancenitra.github.io
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/DanceNitra/inspeximus

Made for: Claude Code.

Or install inspeximus, the plugin that ships this one along with the rest of its 5 hooks, 1 MCP server.

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/dancenitra/inspeximus/session-start/github.svg)](https://agentmods.dev/hooks/dancenitra/inspeximus/session-start)
Your own site
<a href="https://agentmods.dev/hooks/dancenitra/inspeximus/session-start"><img src="https://agentmods.dev/badge/hooks/dancenitra/inspeximus/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/dancenitra/inspeximus/session-start"><img src="https://agentmods.dev/badge/hooks/dancenitra/inspeximus/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 88% 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 yesterday.

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

88% identical to PostToolUse — 3 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 · 12 lines

What it actually says

{
  "SessionStart": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "uvx --default-index https://pypi.org/simple --from inspeximus==3.23.0 python -E -c \"import runpy,sys;sys.path[:]=[p for p in sys.path if p not in (str(),chr(46))];runpy._run_module_as_main(sys.argv.pop(1))\" inspeximus.claude_code"
        }
      ]
    }
  ]
}
Same file

What else hooks.json configures

This page is one entry in a file that holds 5. 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. yesterday Changed 95c0ab09b0ec
  2. 2d ago Changed ff1551cac39b
  3. 3d ago Changed da4ac07a7c78
  4. 4d ago Changed 7f685d7a06c0
  5. 7d ago Changed 9d86e4dc6f43
  6. 9d ago Changed adf69c1bc328
  7. 10d ago Changed 4d18b91193b5
  8. 12d ago Changed 149243b9ed5a
  9. 14d ago Changed b2ffe89ea468
  10. 15d ago First seen · 12 lines scan A 94859eb45db5

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository DanceNitra/inspeximus (8 stars, last pushed 2d 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 88% identical to PostToolUse, differing in 3 lines, and is treated as a copy.

agent-memorygdprllm-memorymcpmcp-servermodel-context-protocol
Related

Other hooks, from other repositories

SessionStart

Runs when a session starts, running python -m wikimoth.capture.hook SessionStart. From juliangeymonat-jpg/wikimoth.

juliangeymonat-jpg/wikimoth · not measured

SessionStart

Runs when a session starts on startup, executing install_pkgs.sh. From supabase/supabase.

supabase/supabase · 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

SessionStart

Runs when a session starts, executing on-start.js via node. From google-gemini/gemini-cli.

google-gemini/gemini-cli · 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

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