agentmods.dev

SessionStart

SessionStart is a hook for Claude Code from Nelsonochoam/nelsonochoam-claude-plugins. Its token cost is not measured, scanned A, original, no licence file.

A startup hook that runs session-start.sh with Bash whenever a coding-agent session begins.

In plain words
What is it for?
Use it for commands or checks that should run when a session starts.
Why use it?
It automates setup tasks that would otherwise need to be run at the start of every session.

Hook for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the crispy plugin — 8 skills, 1 hook shipped together

not rated 5repo 3mo ago A scan tokens not measured no licence

Good fit Use it for commands or checks that should run when a session starts.

Compare 6 hooks from other repositories ↓
Install with agentmods
npx agentmods add hooks/nelsonochoam/nelsonochoam-claude-plugins/session-start
View source ↗ Nelsonochoam/nelsonochoam-claude-plugins
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/Nelsonochoam/nelsonochoam-claude-plugins

Made for: Claude Code.

Or install crispy, the plugin that ships this one along with the rest of its 8 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/nelsonochoam/nelsonochoam-claude-plugins/session-start.svg)](https://agentmods.dev/hooks/nelsonochoam/nelsonochoam-claude-plugins/session-start)
Your own site
<a href="https://agentmods.dev/hooks/nelsonochoam/nelsonochoam-claude-plugins/session-start"><img src="https://agentmods.dev/badge/hooks/nelsonochoam/nelsonochoam-claude-plugins/session-start.svg" alt="Measured on agentmods" 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 unknown 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 7d 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.

plugins/crispy/hooks/hooks.json · 12 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 7d ago First seen · 12 lines scan A 06d62d56b922

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository Nelsonochoam/nelsonochoam-claude-plugins (5 stars, last pushed 3mo ago), with no licence file. 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 2026-08-31.

Planningagentsclaudedevelopment
Related

Other hooks, from other repositories

SessionStart

Runs when a session starts, executing session-start.js via node. From SynkraAI/aiox-core.

SynkraAI/aiox-core · not measured

BeforeAgent

Runs on the BeforeAgent event, executing before-agent.js via node. From SynkraAI/aiox-core.

SynkraAI/aiox-core · not measured

BeforeTool

Runs on the BeforeTool event for write_file, replace, shell, bash and execute tool calls, executing before-tool.js via node. From SynkraAI/aiox-core.

SynkraAI/aiox-core · not measured

AfterTool

Runs on the AfterTool event, executing after-tool.js via node. From SynkraAI/aiox-core.

SynkraAI/aiox-core · not measured

SessionEnd

Runs when a session ends, executing session-end.js via node. From SynkraAI/aiox-core.

SynkraAI/aiox-core · 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