It helps preserve project state before earlier conversation details are compacted or dropped.

PreCompact — Hook for Claude Code by ma-nucho-pro/Wingman

PreCompact

PreCompact is a hook for Claude Code from ma-nucho-pro/Wingman. Its token cost is not measured, scanned A, original, MIT.

An automatic action that saves a Wingman handoff just before an assistant’s conversation context is shortened. Context is the working background the assistant can keep in its conversation.

In plain words

What is it for?: Use it to automatically save context during Claude Code’s pre-compaction event.
Why use it?: It helps preserve project state before earlier conversation details are compacted or dropped.

Written for Claude Code: PreCompact hook event.

Part of the wingman plugin — 3 commands, 3 hooks shipped together

One of 3 entries in hooks.json upstream. Installing this one merges just its entry into your config; the other 2 are separate, each on its own page.

Good fit Use it to automatically save context during Claude Code’s pre-compaction event.

Compare 6 hooks from other repositories ↓

Install with agentmods

npx agentmods add hooks/ma-nucho-pro/wingman/pre-compact

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/ma-nucho-pro/Wingman

Made for: Claude Code.

Or install wingman, the plugin that ships this one along with the rest of its 3 commands, 3 hooks.

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.

README.md

[![agentmods](https://agentmods.dev/badge/hooks/ma-nucho-pro/wingman/pre-compact/github.svg)](https://agentmods.dev/hooks/ma-nucho-pro/wingman/pre-compact)

Your own site

<a href="https://agentmods.dev/hooks/ma-nucho-pro/wingman/pre-compact"><img src="https://agentmods.dev/badge/hooks/ma-nucho-pro/wingman/pre-compact/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.

Your own site · 80×15

<a href="https://agentmods.dev/hooks/ma-nucho-pro/wingman/pre-compact"><img src="https://agentmods.dev/badge/hooks/ma-nucho-pro/wingman/pre-compact.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

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 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.

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.

integrations/claude-code/hooks/hooks.json · 13 lines

What it actually says

{
  "PreCompact": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "npx -y wingman-ai@latest autosave --agent claude-code --hook --quiet --reason compact",
          "timeout": 30
        }
      ]
    }
  ]
}

Same file

What else `hooks.json` configures

This page is one entry in a file that holds 3. 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.

2mo ago First seen · 13 lines scan A c284b6ade918

Subscribe to this mod's changes

PreCompact is a hook published in the GitHub repository ma-nucho-pro/Wingman (5 stars, last pushed 1mo 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 2026-08-31.

Claude Code Memory and context agent-memory ai-agents ai-context ai-memory chatgpt

PreCompact next to 6 hooks from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
PreCompactma-nucho-pro/Wingman	Hook	5	1mo ago	MIT	A	—	Claude Code
SessionStartatomicstrata/atomicmemory	Hook	438	2d ago	none	A	—	Claude Code
PreCompactkevin-hs-sohn/hipocampus	Hook	211	5mo ago	MIT	A	—	Claude Code
UserPromptSubmitleonardsellem/hypermnesic	Hook	8	1mo ago	AGPL-3.0	A	—	Claude Code
SessionStartsupabase/supabase	Hook	115k	today	Apache-2.0	A	—	Claude Code
PostToolUsesupabase/supabase	Hook	115k	today	Apache-2.0	A	—	Claude Code
SessionStartgoogle-gemini/gemini-cli	Hook	109k	today	Apache-2.0	A	—	Claude Code