history-hygiene

history-hygiene is a skill for Claude Code, Codex from Kpa-clawbot/CoreScope. It costs 18 tokens per session (366 once invoked), scanned A, original, GPL-3.0.

A record-keeping rule for project history. It saves final outcomes in history.md instead of recording every intermediate request or decision that was later reversed.

In plain words
What is it for?
It is for maintaining a concise history.md file after work is finished.
Why use it?
It keeps the project history focused on what was ultimately decided and completed.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit It is for maintaining a concise history.md file after work is finished.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kpa-clawbot/corescope/history-hygiene
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.

Any agent
npx skills add Kpa-clawbot/CoreScope --skill history-hygiene
Clone the repo
git clone --depth 1 https://github.com/Kpa-clawbot/CoreScope

Made for: Claude Code, Codex.

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 history-hygiene

README.md
[![agentmods](https://agentmods.dev/badge/skills/kpa-clawbot/corescope/history-hygiene/github.svg)](https://agentmods.dev/skills/kpa-clawbot/corescope/history-hygiene)
Your own site
<a href="https://agentmods.dev/skills/kpa-clawbot/corescope/history-hygiene"><img src="https://agentmods.dev/badge/skills/kpa-clawbot/corescope/history-hygiene/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 history-hygiene

Your own site · 80×15
<a href="https://agentmods.dev/skills/kpa-clawbot/corescope/history-hygiene"><img src="https://agentmods.dev/badge/skills/kpa-clawbot/corescope/history-hygiene.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 366 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00018 $0.00366
Opus 5 $0.00009 $0.00183
Sonnet 5 $0.00004 $0.00073
Haiku 4.5 $0.00002 $0.00037

Measured 9d ago against content hash 1087baea8153, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

history-hygiene 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 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

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.

.squad/templates/skills/history-hygiene/SKILL.md · 37 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 9d ago First seen · 37 lines · 18 tokens per session scan A 1087baea8153

Subscribe to this mod's changes

history-hygiene is a skill published in the GitHub repository Kpa-clawbot/CoreScope (171 stars, last pushed 2d ago), licensed GPL-3.0. It adds 18 tokens to every session and 366 once invoked, about $0.0001 per session on Opus 5. 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.

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