git-security-history

git-security-history is a skill for Claude Code, Codex from tr4m0ryp/shor. It costs 86 tokens per session (1,177 once invoked), scanned A, original, no licence file.

A repository-history analysis recipe that searches Git commit messages for security fixes and vulnerability references, then ranks the files those commits changed.

In plain words
What is it for?
Use it on an already-cloned repository to create a historicalsignal.json file, optionally combining Git history with existing OSV-Scanner dependency-vulnerability results and Gitleaks secret-scan results.
Why use it?
It helps reveal files with a history of security-related changes, which can highlight areas needing closer review.

Skill for Claude CodeCodex

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

Good fit Use it on an already-cloned repository to create a historicalsignal.json file, optionally combining Git history with existing OSV-Scanner dependency-vulnerability results and Gitleaks secret-scan results.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tr4m0ryp/shor/git-security-history
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 tr4m0ryp/shor --skill git-security-history
Clone the repo
git clone --depth 1 https://github.com/tr4m0ryp/shor

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 git-security-history

README.md
[![agentmods](https://agentmods.dev/badge/skills/tr4m0ryp/shor/git-security-history.svg)](https://agentmods.dev/skills/tr4m0ryp/shor/git-security-history)
Your own site
<a href="https://agentmods.dev/skills/tr4m0ryp/shor/git-security-history"><img src="https://agentmods.dev/badge/skills/tr4m0ryp/shor/git-security-history.svg" alt="Measured on agentmods" height="20"></a>
Per session 86 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,177 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 $0.00086 $0.01177
Opus 5 $0.00043 $0.00589
Sonnet 5 $0.00017 $0.00235
Haiku 4.5 $0.00009 $0.00118

Measured 8d ago against content hash 25b0165d7ca8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

git-security-history 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 8d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (assemble.py, mine.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/static-analysis/history/git-security-history/SKILL.md · 80 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 8d ago First seen · 80 lines · 86 tokens per session scan A 25b0165d7ca8

Subscribe to this mod's changes

git-security-history is a skill published in the GitHub repository tr4m0ryp/shor (9 stars, last pushed 1mo ago), with no licence file. It adds 86 tokens to every session and 1,177 once invoked, about $0.0004 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 2026-08-31.

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