Use it before context compaction to prune oversized notes and record progress in the branch scratchpad.

It preserves the current phase, completed deliverables, next action, and blockers when earlier context may no longer be available.

How EndogenAI/dogma configures Claude Code

dogma: Hook for Claude Code

.claude/settings.json

PreCompact is a hook for Claude Code from EndogenAI/dogma. Its token cost is not measured, scanned A, original, Apache-2.0.

A pre-compaction hook that runs a scratchpad-size check and asks for a short checkpoint before the agent’s conversation context is compressed. A scratchpad is a file used to preserve working notes.

In plain words

What is it for?: Use it before context compaction to prune oversized notes and record progress in the branch scratchpad.
Why use it?: It preserves the current phase, completed deliverables, next action, and blockers when earlier context may no longer be available.

Written for Claude Code: PreCompact hook event.

This is EndogenAI/dogma's own configuration. It tells Claude Code how to work on dogma 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 dogma configures →

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

Reuse

Borrowing it

Nothing to install: this file belongs to EndogenAI/dogma. 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/EndogenAI/dogma/main/.claude/settings.json

Clone the repo

git clone --depth 1 https://github.com/EndogenAI/dogma

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.

README.md

[![agentmods](https://agentmods.dev/badge/hooks/endogenai/dogma/pre-compact/github.svg)](https://agentmods.dev/hooks/endogenai/dogma/pre-compact)

Your own site

<a href="https://agentmods.dev/hooks/endogenai/dogma/pre-compact"><img src="https://agentmods.dev/badge/hooks/endogenai/dogma/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/endogenai/dogma/pre-compact"><img src="https://agentmods.dev/badge/hooks/endogenai/dogma/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.

.claude/settings.json · 16 lines

What it actually says

{
  "PreCompact": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "uv run python scripts/prune_scratchpad.py --check-size 2>&1 | head -3"
        },
        {
          "type": "prompt",
          "prompt": "Write a '## Pre-Compact Checkpoint' section to the active scratchpad (at .tmp/<branch>/$(date +%Y-%m-%d).md) capturing: (1) active phase name and status, (2) all deliverables committed so far with commit SHAs, (3) the single next concrete step, (4) any open blockers. Keep it under 200 words."
        }
      ]
    }
  ]
}

Same file

What else `settings.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 · 16 lines scan A f7109bd6689f

Subscribe to this mod's changes

PreCompact is a hook published in the GitHub repository EndogenAI/dogma (2 stars, last pushed 2mo 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. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

AI Safety agent agents-md ai ai-governance ai-harness

PreCompact next to 6 hooks from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
PreCompactEndogenAI/dogma	Hook	2	2mo ago	Apache-2.0	A	—	Claude Code
PreToolUseQORIS-AI/knox	Hook	7	2mo ago	none	A	—	Claude Code
InstructionsLoadedQORIS-AI/knox	Hook	7	2mo ago	none	A	—	Claude Code
PostToolUseQORIS-AI/knox	Hook	7	2mo ago	none	A	—	Claude Code
SubagentStartQORIS-AI/knox	Hook	7	2mo ago	none	A	—	Claude Code
FileChangedQORIS-AI/knox	Hook	7	2mo ago	none	A	—	Claude Code
SessionStartQORIS-AI/knox	Hook	7	2mo ago	none	A	—	Claude Code