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A-Team: Hook for Claude Code

.claude/settings.json

SessionStart is a hook for Claude Code from chemistrywow31/A-Team. Its token cost is not measured, scanned B, original, no licence file.

A startup hook that runs two shell commands when an agent session begins.

In plain words
What is it for?
It is for running a fixed shell check whenever the agent starts.
Why use it?
It checks something automatically at the start of each session, so the agent does not need to wait for a separate manual check.

Hook for Claude Code

Written for Claude Code: installed under .claude/.

This is chemistrywow31/A-Team's own configuration. It tells Claude Code how to work on A-Team itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything A-Team configures →

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

not rated 55repo 11d ago B scan tokens not measured no licence
View source ↗ chemistrywow31/A-Team
Reuse

Borrowing it

Nothing to install: this file belongs to chemistrywow31/A-Team. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/chemistrywow31/A-Team/main/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/chemistrywow31/A-Team

Made for: Claude Code.

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/chemistrywow31/a-team/session-start/github.svg)](https://agentmods.dev/hooks/chemistrywow31/a-team/session-start)
Your own site
<a href="https://agentmods.dev/hooks/chemistrywow31/a-team/session-start"><img src="https://agentmods.dev/badge/hooks/chemistrywow31/a-team/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/chemistrywow31/a-team/session-start"><img src="https://agentmods.dev/badge/hooks/chemistrywow31/a-team/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 B 1 finding. 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 B, and why

SessionStart scanned grade B 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 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

"command": "L=\"${CLAUDE_PROJECT_DIR:-.}/.claude/settings.local.json\"; case \"$(cat \"$L\" 2>/dev/null)\" in *outputStyle*) : ;; *) printf '%s\n' '<output-mode-first-run>No output style is set for this project yet. Befo
.claude/settings.json · 23 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

Same file

What else settings.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. 2mo ago First seen · 23 lines scan B 9f76df7a2e86

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository chemistrywow31/A-Team (55 stars, last pushed 11d 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 B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

SessionStart compared with hooks from other repositories

SessionStart next to 6 hooks from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
SessionStartchemistrywow31/A-TeamHook5511d agononeB—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
PostToolUseanthropics/claude-plugins-officialHook46kyesterdayApache-2.0A—Claude Code