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open-code-review: Hook for Claude Code

.claude/settings.json

SessionStart is a hook for Claude Code from spencermarx/open-code-review. Its token cost is not measured, scanned A, a copy of PreToolUse, Apache-2.0.

A session-start automation that runs two project scripts when an agent session begins. One restores the previous session, while the other imports saved memory.

In plain words
What is it for?
Use it to restore session state and import saved information at the beginning of an agent session.
Why use it?
It brings back project context automatically, so the agent does not always start with an empty memory or require manual setup.

Hook for Claude Code

Written for Claude Code: SessionStart hook event.

This is spencermarx/open-code-review's own configuration. It tells Claude Code how to work on open-code-review 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 open-code-review configures →

One of 9 entries in settings.json upstream. Installing this one merges just its entry into your config; the other 8 are separate, each on its own page.

not rated 382repo +2 3mo ago A scan tokens not measured copy · 86% Apache-2.0
View source ↗ spencermarx/open-code-review
Reuse

Borrowing it

Nothing to install: this file belongs to spencermarx/open-code-review. 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/spencermarx/open-code-review/main/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/spencermarx/open-code-review

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/spencermarx/open-code-review/session-start/github.svg)](https://agentmods.dev/hooks/spencermarx/open-code-review/session-start)
Your own site
<a href="https://agentmods.dev/hooks/spencermarx/open-code-review/session-start"><img src="https://agentmods.dev/badge/hooks/spencermarx/open-code-review/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/spencermarx/open-code-review/session-start"><img src="https://agentmods.dev/badge/hooks/spencermarx/open-code-review/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 86% 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 1mo 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

This is a copy

86% identical to PreToolUse — 12 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.

.claude/settings.json · 18 lines

What it actually says

{
  "SessionStart": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "node \"$(git rev-parse --show-toplevel)/.claude/helpers/hook-handler.cjs\" session-restore",
          "timeout": 15000
        },
        {
          "type": "command",
          "command": "node \"$(git rev-parse --show-toplevel)/.claude/helpers/auto-memory-hook.mjs\" import",
          "timeout": 8000
        }
      ]
    }
  ]
}
Same file

What else settings.json configures

This page is one entry in a file that holds 9. 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. 1mo ago First seen · 18 lines scan A 94d5428a454e

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository spencermarx/open-code-review (382 stars, last pushed 3mo ago), licensed Apache-2.0. 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 86% identical to PreToolUse, differing in 12 lines, and is treated as a copy.

Building agentsClaude CodeMemory and contextagentic-aiagentsaiclaude-aiclaude-code-plugin
Related

Other hooks, from other repositories

SessionStart

Runs when a session starts, executing dcode-sessionstart-hook.js via node. From vectorize-io/hindsight.

vectorize-io/hindsight · not measured

Stop

Runs when the agent finishes a response, executing dcode-stop-hook.js via node. From vectorize-io/hindsight.

vectorize-io/hindsight · not measured

PreToolUse

Runs before the agent uses a tool for Edit and Write tool calls, running minns recall --brief --file $TOOL_INPUT_FILE_PATH 'relevant . From Minns-ai/MinnsDB.

Minns-ai/MinnsDB · not measured

Stop

Runs when the agent finishes a response, running minns learn --category session_summary --from-stdin. From Minns-ai/MinnsDB.

Minns-ai/MinnsDB · 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