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Claude-Code-Game-Studios: Hook for Claude Code

.claude/settings.json

SessionStart is a hook for Claude Code from Donchitos/Claude-Code-Game-Studios. Its token cost is not measured, scanned A, original, MIT.

A session-start hook that runs two shell scripts when an agent session begins. A hook is an automatic action tied to a specific event.

In plain words
What is it for?
Use it to run session setup and detect missing pieces at the start of work in a code project.
Why use it?
It performs the project's startup checks automatically, so those checks do not depend on someone remembering to run them. The supplied details do not say exactly what the scripts check.

Hook for Claude Code

Written for Claude Code: $CLAUDE_PROJECT_DIR variable.

This is Donchitos/Claude-Code-Game-Studios's own configuration. It tells Claude Code how to work on Claude-Code-Game-Studios 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 Claude-Code-Game-Studios configures →

One of 10 entries in settings.json upstream. Installing this one merges just its entry into your config; the other 9 are separate, each on its own page.

not rated 27krepo +617 changed 25d ago A scan tokens not measured original MIT
View source ↗ Donchitos/Claude-Code-Game-Studios
About the project

Claude Code Game Studios is a setup that organizes Claude Code into a coordinated game-development team of specialized AI agents. It supports game projects across design, programming, art, audio, narrative, quality assurance, and production, with skills and workflows for coordinating that work.

Donchitos/Claude-Code-Game-Studios · 26,822 stars · on GitHub

Reuse

Borrowing it

Nothing to install: this file belongs to Donchitos/Claude-Code-Game-Studios. 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/Donchitos/Claude-Code-Game-Studios/main/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/Donchitos/Claude-Code-Game-Studios

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/donchitos/claude-code-game-studios/session-start/github.svg)](https://agentmods.dev/hooks/donchitos/claude-code-game-studios/session-start)
Your own site
<a href="https://agentmods.dev/hooks/donchitos/claude-code-game-studios/session-start"><img src="https://agentmods.dev/badge/hooks/donchitos/claude-code-game-studios/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/donchitos/claude-code-game-studios/session-start"><img src="https://agentmods.dev/badge/hooks/donchitos/claude-code-game-studios/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 25d 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

Copies of this mod

6 near-identical copies found in the catalogue:

.claude/settings.json · 19 lines

What it actually says

{
  "SessionStart": [
    {
      "matcher": "",
      "hooks": [
        {
          "type": "command",
          "command": "bash \"$CLAUDE_PROJECT_DIR/.claude/hooks/session-start.sh\"",
          "timeout": 10
        },
        {
          "type": "command",
          "command": "bash \"$CLAUDE_PROJECT_DIR/.claude/hooks/detect-gaps.sh\"",
          "timeout": 10
        }
      ]
    }
  ]
}
Same file

What else settings.json configures

This page is one entry in a file that holds 10. 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. 25d ago Changed e1aef6ea61de
  2. 1mo ago First seen · 19 lines scan A 4ec46253b872

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository Donchitos/Claude-Code-Game-Studios (26,822 stars, last pushed 10d 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 Codeai-agentsai-assisted-developmentanthropicclaudegame-design
Related

Other hooks, from other repositories

PreToolUse

Runs before the agent uses a tool for Write, Edit, Bash and Bash tool calls, running "/path/to/shipworthy/hooks/pre-tool-use" (3 commands). From Vimalk0703/shipworthy.

Vimalk0703/shipworthy · not measured

SessionStart

Runs when a session starts, running "/path/to/shipworthy/hooks/session-start". From Vimalk0703/shipworthy.

Vimalk0703/shipworthy · 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 on startup, executing install_pkgs.sh. From supabase/supabase.

supabase/supabase · 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

PreToolUse

Runs before the agent uses a tool, executing pre-write.sh and pre-bash.sh (2 commands). From anthropics/claude-cookbooks.

anthropics/claude-cookbooks · not measured