source-owner-audit

source-owner-audit is a skill for Claude Code, Codex from perhapsspy/project-legibility. It costs 61 tokens per session (724 once invoked), scanned A, original, MIT.

A read-only check of the current code, API, settings, documentation, or behavior to find the version that should be followed and compare it with a proposed change.

In plain words
What is it for?
Use it when reviewing a migration, port, redesign, or existing behavior and you need to identify the responsible source and report what does not match.
Why use it?
It prevents decisions based on memory, outdated documents, or guesses. It clearly separates confirmed evidence, differences, unresolved choices, and recommendations.

Skill for Claude CodeCodex

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/perhapsspy/project-legibility/source-owner-audit
Any agent
npx skills add perhapsspy/project-legibility --skill source-owner-audit
Clone the repo
git clone --depth 1 https://github.com/perhapsspy/project-legibility

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 source-owner-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/perhapsspy/project-legibility/source-owner-audit.svg)](https://agentmods.dev/skills/perhapsspy/project-legibility/source-owner-audit)
Your own site
<a href="https://agentmods.dev/skills/perhapsspy/project-legibility/source-owner-audit"><img src="https://agentmods.dev/badge/skills/perhapsspy/project-legibility/source-owner-audit.svg" alt="Measured on agentmods" height="20"></a>
Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 724 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 $0.00061 $0.00724
Opus 5 $0.00030 $0.00362
Sonnet 5 $0.00012 $0.00145
Haiku 4.5 $0.00006 $0.00072

Measured 4d ago against content hash 7dbdb307465b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

source-owner-audit 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/project-legibility/skills/source-owner-audit/SKILL.md · 49 lines

How it starts

The opening of the file, as written. The whole thing — 49 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Source Owner Audit

Purpose and Scope

Answer from current source evidence:

  • What should we follow?
  • What differs?
  • What still needs a decision?

Default to read-only evidence, comparison, classification, and owner-level recommendation. Explicit investigation-only, prohibition, exclusion, and scope-limit wording is binding. Owner evidence identifies responsibility; it does not authorize edits, cleanup, implementation sequencing, or any expansion beyond the user-approved scope.

Evidence Rules

Resolve each candidate owner independently from the smallest current source path. Start with the feature, route, API, config, document, or behavior named by the user; prefer path-specific reads over broad scans. When local changes may affect the answer, inspect worktree status and the relevant diff.

Current source outranks memory, prior summaries, old task notes, stale documentation, and candidate implementations. Until the current owner is confirmed, label conclusions as inference or insufficient current evidence. Do not select an owner or product value by plausibility when evidence is insufficient; report the missing decision instead. Separate confirmed fact from inference.

Trace only the ownership path needed for the question, such as caller, adapter/client, route/API, command/service, persistence/schema, test, config, runbook, or owner document. Distinguish current production owners from derived/router, legacy/compatibility, stale/superseded, generated/copied, and evidence-only surfaces.

When the question crosses those boundaries, distinguish source/contract, caller/UX, write/read, document/task, migration, and decision owners.

Capability does not prove caller intent, access policy, product approval, or UX parity; each needs its own evidence. Preserve existing product and UX contracts unless current owner evidence says otherwise.

Compare and Decide

Compare the proposed, migrated, ported, or current surface against its owner. For UX parity, compare relevant affordances, labels, state transitions, empty/error states, density, and permission behavior—not backend capability alone.

Read the full file on GitHub · 49 lines

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. 4d ago First seen · 49 lines · 61 tokens per session scan A 7dbdb307465b

Subscribe to this mod's changes

source-owner-audit is a skill published in the GitHub repository perhapsspy/project-legibility (5 stars, last pushed today), licensed MIT. It adds 61 tokens to every session and 724 once invoked, about $0.0003 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.