What is openai-security-ownership-map?

A tool for mapping which people have worked on which files in a Git repository, with a focus on security-sensitive code and the number of people who can maintain it.

Use it for security-focused ownership or bus-factor analysis based on Git history, and to export the results as CSV or JSON for graphs and visualisations.

It reveals areas where security knowledge is concentrated in too few contributors. This helps identify ownership gaps and possible single points of failure.

openai-security-ownership-map — Skill for Claude Code by trailofbits

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 trailofbits/skills-curated --skill openai-security-ownership-map

Clone the repo

git clone --depth 1 https://github.com/trailofbits/skills-curated

Made for: Claude Code.

Or install openai-security-ownership-map, the plugin that ships this one along with the rest of its 1 skill.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/trailofbits/skills-curated/openai-security-ownership-map/github.svg)](https://agentmods.dev/skills/trailofbits/skills-curated/openai-security-ownership-map)

Your own site

<a href="https://agentmods.dev/skills/trailofbits/skills-curated/openai-security-ownership-map"><img src="https://agentmods.dev/badge/skills/trailofbits/skills-curated/openai-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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/trailofbits/skills-curated/openai-security-ownership-map"><img src="https://agentmods.dev/badge/skills/trailofbits/skills-curated/openai-security-ownership-map.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 110 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,142 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.

Model	Per session	Once invoked
Fable 5.1	$0.00110	$0.02142
Opus 5.5	$0.00044	$0.00857
Sonnet 5.5	$0.00022	$0.00428
Haiku 4.5	$0.00011	$0.00214

Measured 2mo ago against content hash b03aba97be8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

openai-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 2mo 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.

plugins/openai-security-ownership-map/skills/openai-security-ownership-map/SKILL.md · 228 lines

The source is not reproduced here

Licensed CC-BY-SA-4.0

The repository is licensed CC-BY-SA-4.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

5 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.

2mo ago First seen · 228 lines · 110 tokens per session scan A b03aba97be8d

Subscribe to this mod's changes

openai-security-ownership-map is a skill published in the GitHub repository trailofbits/skills-curated (525 stars, last pushed 3mo ago), licensed CC-BY-SA-4.0. It adds 110 tokens to every session and 2,142 once invoked, about $0.0004 per session on Opus 5.5. 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.