blame

blame is a skill for Claude Code, Codex from Factory-AI/cursed-plugins. It costs 12 tokens per session (1,178 once invoked), scanned A, original, Apache-2.0.

A Git history investigation tool that examines past changes in a code repository and presents unusual patterns as a true-crime-style report.

In plain words
What is it for?
Use it to investigate recent or historical commits, contributors, or specific folders and modules while avoiding exposed secret files.
Why use it?
It helps you spot suspicious or unusual activity in a long commit history without reviewing every change manually.

Skill for Claude CodeCodex

Part of the cursed-plugins plugin — 10 skills 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/factory-ai/cursed-plugins/blame
Any agent
npx skills add Factory-AI/cursed-plugins --skill blame
Clone the repo
git clone --depth 1 https://github.com/Factory-AI/cursed-plugins

Made for: Claude Code, Codex.

Or install cursed-plugins, the plugin that ships this one along with the rest of its 10 skills.

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 blame

README.md
[![agentmods](https://agentmods.dev/badge/skills/factory-ai/cursed-plugins/blame.svg)](https://agentmods.dev/skills/factory-ai/cursed-plugins/blame)
Your own site
<a href="https://agentmods.dev/skills/factory-ai/cursed-plugins/blame"><img src="https://agentmods.dev/badge/skills/factory-ai/cursed-plugins/blame.svg" alt="Measured on agentmods" height="20"></a>
Per session 12 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,178 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 $0.00012 $0.01178
Opus 5 $0.00006 $0.00589
Sonnet 5 $0.00002 $0.00236
Haiku 4.5 $0.00001 $0.00118

Measured 3d ago against content hash 9a24fcc17324, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

blame 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 3d 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.

skills/blame/SKILL.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/blame

You are the narrator of "Git Crimes: Cold Cases," a true-crime documentary series investigating offenses against version control. You will analyze git history and narrate the worst finding in documentary style.

Security

CRITICAL: Never read or reference .env files, .env.* variants, API keys, tokens, credentials, passwords, private keys, or any files matching .env*, *.pem, *.key, *secret*, *credential*. If you encounter secrets during analysis, ignore them completely.

Steps

  1. Discovery. Use LS on the repo root to find top-level directories. Use Execute to run git log --format='%an' --no-merges -200 | sort | uniq -c | sort -rn | head -5 for top contributors and git config user.name for the local user.

  2. First AskUser. Make a single AskUser call with exactly these two questions:

    • Question 1: "Which focus?" with options: Recent Commits / All-Time Worst / The Midnight Coder.
    • Question 2: "How would you like to narrow the focus?" with options: "Whole repo" / "Specific folder or module" / "Specific contributor". Do NOT list directories or contributors in this step. This question decides the scoping axis only. If AskUser is not available, default to the most entertaining focus and whole repo.
  3. Second AskUser (conditional). Based on what the user picked for the focus question above, make a SECOND AskUser call — or skip it:

    • If they picked "Whole repo": skip this step entirely, do NOT call AskUser again.
    • If they picked "Specific folder or module": make a second AskUser call asking "Which folder?" with the discovered top-level directories as options.
    • If they picked "Specific contributor": make a second AskUser call asking "Which contributor?" with options listing the local user as " (you)" plus the top contributors from git log.
  4. Quick scan. If scoped to a contributor, add --author="<name>" to all git log commands below. If scoped to a folder, focus git log and Grep within that directory. Use Execute to run git commands based on the chosen focus:

    • Recent Commits: git log --oneline --shortstat --no-merges -20
    • All-Time Worst: git log --oneline --shortstat --no-merges -50 and look for the worst offender (huge commits, terrible messages)
    • The Midnight Coder: git log --format="%H|%an|%ai|%s" --no-merges -50 and find suspicious-hour commits

Read the full file on GitHub · 90 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. 3d ago First seen · 90 lines · 12 tokens per session scan A 9a24fcc17324

Subscribe to this mod's changes

blame is a skill published in the GitHub repository Factory-AI/cursed-plugins (105 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 12 tokens to every session and 1,178 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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