security-ownership-map

security-ownership-map is a skill for Codex from foryourhealth111-pixel/Vibe-Skills. It costs 99 tokens per session (2,079 once invoked), scanned A, a copy of security-ownership-map, Apache-2.0.

A tool that analyses Git history to map which people work on which files and identify security-sensitive ownership gaps.

In plain words
What is it for?
It helps build people-to-file ownership maps, measure bus factor, find sensitive-code ownership, analyse files that change together, and export CSV, JSON, or graph data.
Why use it?
It reveals files with concentrated knowledge or weak backup ownership, helping teams assess bus factor—the number of people whose departure could leave work unsupported.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit It helps build people-to-file ownership maps, measure bus factor, find sensitive-code ownership, analyse files that change together, and export CSV, JSON, or graph data.

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Install with agentmods
npx agentmods add skills/foryourhealth111-pixel/vibe-skills/security-ownership-map
About the project

Vibe-Skills is a collection and routing system that helps AI agents discover, select, and coordinate specialized skills for completing tasks. It is intended for agents that need to organize workflows across many installed capabilities. The catalogue entries are skills and an agent belonging to this system.

foryourhealth111-pixel/Vibe-Skills · 3,252 stars · on GitHub

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 foryourhealth111-pixel/Vibe-Skills --skill security-ownership-map
Clone the repo
git clone --depth 1 https://github.com/foryourhealth111-pixel/Vibe-Skills

Made for: 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 security-ownership-map

README.md
[![agentmods](https://agentmods.dev/badge/skills/foryourhealth111-pixel/vibe-skills/security-ownership-map/github.svg)](https://agentmods.dev/skills/foryourhealth111-pixel/vibe-skills/security-ownership-map)
Your own site
<a href="https://agentmods.dev/skills/foryourhealth111-pixel/vibe-skills/security-ownership-map"><img src="https://agentmods.dev/badge/skills/foryourhealth111-pixel/vibe-skills/security-ownership-map/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 security-ownership-map

Your own site · 80×15
<a href="https://agentmods.dev/skills/foryourhealth111-pixel/vibe-skills/security-ownership-map"><img src="https://agentmods.dev/badge/skills/foryourhealth111-pixel/vibe-skills/security-ownership-map.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 99 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,079 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 100% copy Near-identical to another mod 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 $0.00099 $0.02079
Opus 5 $0.00049 $0.01040
Sonnet 5 $0.00020 $0.00416
Haiku 4.5 $0.00010 $0.00208

Measured 9d ago against content hash f06c1a592475, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

security-ownership-map 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.

The scan reads SKILL.md. This mod also ships 4 executable files (scripts/build_ownership_map.py, scripts/community_maintainers.py, scripts/query_ownership.py, …), 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.

Origin

This is a copy

100% identical to security-ownership-map — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

bundled/skills/security-ownership-map/SKILL.md · 207 lines

How it starts

The opening of the file, as written. The whole thing — 207 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Security Ownership Map

Overview

Build a bipartite graph of people and files from git history, then compute ownership risk and export graph artifacts for Neo4j/Gephi. Also build a file co-change graph (Jaccard similarity on shared commits) to cluster files by how they move together while ignoring large, noisy commits.

Requirements

  • Python 3
  • networkx (required; community detection is enabled by default)

Install with:

pip install networkx

Workflow

  1. Scope the repo and time window (optional --since/--until).
  2. Decide sensitivity rules (use defaults or provide a CSV config).
  3. Build the ownership map with scripts/run_ownership_map.py (co-change graph is on by default; use --cochange-max-files to ignore supernode commits).
  4. Communities are computed by default; graphml output is optional (--graphml).
  5. Query the outputs with scripts/query_ownership.py for bounded JSON slices.
  6. Persist and visualize (see references/neo4j-import.md).

By default, the co-change graph ignores common “glue” files (lockfiles, .github/*, editor config) so clusters reflect actual code movement instead of shared infra edits. Override with --cochange-exclude or --no-default-cochange-excludes. Dependabot commits are excluded by default; override with --no-default-author-excludes or add patterns via --author-exclude-regex.

If you want to exclude Linux build glue like Kbuild from co-change clustering, pass:

python skills/skills/security-ownership-map/scripts/run_ownership_map.py \
  --repo /path/to/linux \
  --out ownership-map-out \
  --cochange-exclude "**/Kbuild"

Quick start

Run from the repo root:

python skills/skills/security-ownership-map/scripts/run_ownership_map.py \
  --repo . \
  --out ownership-map-out \
  --since "12 months ago" \
  --emit-commits

Defaults: author identity, author date, and merge commits excluded. Use --identity committer, --date-field committer, or --include-merges if needed.

Read the full file on GitHub · 207 lines

Files

What ships with it

7 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. 9d ago First seen · 207 lines · 99 tokens per session scan A f06c1a592475

Subscribe to this mod's changes

security-ownership-map is a skill published in the GitHub repository foryourhealth111-pixel/Vibe-Skills (3,252 stars, last pushed 12d ago), licensed Apache-2.0. It adds 99 tokens to every session and 2,079 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to security-ownership-map, differing in 0 lines, and is treated as a copy.