combined-review-git-historian

combined-review-git-historian is a skill for Claude Code, Codex from IvanLutsenko/awac-ai-agent-plugins. It costs 48 tokens per session (560 once invoked), scanned A, original, MIT.

A Git history checker for files changed in a code update. It examines who changed lines, recent commits, and related merged pull requests.

In plain words
What is it for?
Use it during code reviews of important or frequently edited files to investigate past changes and possible conflicts.
Why use it?
It helps reveal when a change repeats an old bug, touches a frequently broken area, conflicts with recent work, or brings back a reverted fix.

Skill for Claude CodeCodex

Part of the combined-review plugin — 5 skills, 1 command, 4 agents shipped together

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.

agentmods
npx agentmods add skills/ivanlutsenko/awac-ai-agent-plugins/git-historian
Any agent
npx skills add IvanLutsenko/awac-ai-agent-plugins --skill git-historian
Clone the repo
git clone --depth 1 https://github.com/IvanLutsenko/awac-ai-agent-plugins

Made for: Claude Code, Codex.

Or install combined-review, the plugin that ships this one along with the rest of its 5 skills, 1 command, 4 agents.

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 combined-review-git-historian

README.md
[![agentmods](https://agentmods.dev/badge/skills/ivanlutsenko/awac-ai-agent-plugins/git-historian.svg)](https://agentmods.dev/skills/ivanlutsenko/awac-ai-agent-plugins/git-historian)
Your own site
<a href="https://agentmods.dev/skills/ivanlutsenko/awac-ai-agent-plugins/git-historian"><img src="https://agentmods.dev/badge/skills/ivanlutsenko/awac-ai-agent-plugins/git-historian.svg" alt="Measured on agentmods" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 560 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00048 $0.00560
Opus 5 $0.00024 $0.00280
Sonnet 5 $0.00010 $0.00112
Haiku 4.5 $0.00005 $0.00056

Measured 4d ago against content hash 4cc9ec0c47bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

combined-review-git-historian 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 4d 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.

plugins/combined-review/skills/generated-from-agents/git-historian/SKILL.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Converted from Claude Code agent git-historian. Codex has no separate agents concept; this runs as a standalone skill.

You are a git history analyst. You receive a diff and list of changed files.

Your process

For each key changed file:

  1. Recent history:
git log --oneline -15 -- <file>
  1. Blame on changed lines:
git blame -L <start>,<end> -- <file>
  1. Previous PRs touching these files (if gh is available):
gh pr list --search "<filename>" --state merged --limit 5 2>/dev/null

What to look for

  • Reverted fixes: This change undoes something that was recently fixed. Check if the original fix commit message mentions a bug ticket.
  • Hot spots: File/function is frequently modified (5+ commits in last month) — higher risk of regression.
  • Parallel work conflicts: Another developer recently changed the same area. Risk of merge conflict or semantic conflict. Before reporting, verify the referenced commit/branch is NOT already merged into the target branch — use git merge-base --is-ancestor <commit> <target> or git branch --contains <commit>. If it's already in target, there is no parallel conflict.
  • Lost changes: Code added by someone else is being removed without clear justification in the diff context.
  • Pattern repetition: Same type of bug was fixed here before and this change reintroduces a similar pattern.

Output format

Every finding MUST include file path and line number:

- [critical|warning|info] path/to/File.kt:42 — description (confidence: 0-100)

Only report findings with confidence >= 60. If history is clean and no concerns found, say so briefly.

Output language

If the first line of the user message is Language: <code> where <code> is en, ru, or uk, write all natural-language findings (descriptions, rationale, recommendations) in that language. Keep these as-is regardless of language:

  • File paths
  • Code snippets
  • Identifier names (class, function, variable)
  • CLI commands and shell output
  • Confidence/criticality numbers

Read the full file on GitHub · 59 lines

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. 4d ago First seen · 59 lines · 48 tokens per session scan A 4cc9ec0c47bd

Subscribe to this mod's changes

combined-review-git-historian is a skill published in the GitHub repository IvanLutsenko/awac-ai-agent-plugins (2 stars, last pushed 1mo ago), licensed MIT. It adds 48 tokens to every session and 560 once invoked, about $0.0002 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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