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claude-code-power-config: Hook for Claude Code

.claude/settings.json

PreCompact is a hook for Claude Code from AlexisBalayre/claude-code-power-config. Its token cost is not measured, scanned A, a copy of SessionStart, MIT.

A hook that runs a preservation script before the coding session's context is shortened.

In plain words
What is it for?
It is for saving state before context compaction so work can continue afterward.
Why use it?
It helps retain important working information when the session reaches its context limit.

Hook for Claude Code

Written for Claude Code: $CLAUDE_PROJECT_DIR variable.

This is AlexisBalayre/claude-code-power-config's own configuration. It tells Claude Code how to work on claude-code-power-config 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-power-config configures →

One of 4 entries in settings.json — they are configured in one file and arrive together.

not rated 2repo 25d ago A scan tokens not measured copy · 48% MIT
View source ↗ AlexisBalayre/claude-code-power-config
Reuse

Borrowing it

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

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 PreCompact

README.md
[![agentmods](https://agentmods.dev/badge/hooks/alexisbalayre/claude-code-power-config/pre-compact.svg)](https://agentmods.dev/hooks/alexisbalayre/claude-code-power-config/pre-compact)
Your own site
<a href="https://agentmods.dev/hooks/alexisbalayre/claude-code-power-config/pre-compact"><img src="https://agentmods.dev/badge/hooks/alexisbalayre/claude-code-power-config/pre-compact.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 48% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

PreCompact 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 6d 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

48% identical to SessionStart — 7 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 · 12 lines

What it actually says

{
  "PreCompact": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "\"$CLAUDE_PROJECT_DIR\"/.claude/hooks/pre-compact-preserve.sh"
        }
      ]
    }
  ]
}
Same file

What else settings.json configures

This page is one entry in a file that holds 4. 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. 6d ago First seen · 12 lines scan A 1a5460c451bc

Subscribe to this mod's changes

PreCompact is a hook published in the GitHub repository AlexisBalayre/claude-code-power-config (2 stars, last pushed 25d 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 48% identical to SessionStart, differing in 7 lines, and is treated as a copy.

Claude CodeMemory and contextagentsaianthropicclaudedeveloper-tools
Related

Other hooks, from other repositories

PreCompact

Runs before the context is compacted, executing session-transcript.py and session-learner.py via python3 (2 commands). From markmdev/meridian.

markmdev/meridian · 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

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

PreCompact

Runs before the context is compacted for manual and auto tool calls, executing hook-handler.cjs via node (4 commands). From ruvnet/RuView.

ruvnet/RuView · not measured

SessionStart

Runs when a session starts on startup, clear and compact, executing run-hook.cmd. From obra/superpowers.

obra/superpowers · not measured