r-util-lib-sync

r-util-lib-sync is a command for Claude Code from rfxn/rdf. It costs 0 tokens per session (813 once invoked), scanned B, original, GPL-2.0.

A tool that compares shared libraries across projects with their canonical version to find drift.

In plain words
What is it for?
Use it to audit shared-library consistency across projects.
Why use it?
It helps detect when copies of a shared library have diverged from the version meant to be authoritative.

Command for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the rdf plugin — 37 skills, 37 commands, 6 agents, 6 hooks shipped together

Good fit Use it to audit shared-library consistency across projects.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/rfxn/rdf/r-util-lib-sync
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.

Clone the repo
git clone --depth 1 https://github.com/rfxn/rdf

Made for: Claude Code.

Or install rdf, the plugin that ships this one along with the rest of its 37 skills, 37 commands, 6 agents, 6 hooks.

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 r-util-lib-sync

README.md
[![agentmods](https://agentmods.dev/badge/commands/rfxn/rdf/r-util-lib-sync.svg)](https://agentmods.dev/commands/rfxn/rdf/r-util-lib-sync)
Your own site
<a href="https://agentmods.dev/commands/rfxn/rdf/r-util-lib-sync"><img src="https://agentmods.dev/badge/commands/rfxn/rdf/r-util-lib-sync.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 813 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00813
Opus 5 $0.00000 $0.00407
Sonnet 5 $0.00000 $0.00163
Haiku 4.5 $0.00000 $0.00081

Measured 5d ago against content hash 0aec91f9508d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade B, and why

r-util-lib-sync scanned grade B with 1 finding 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 5d 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

2. `command chmod 750` consumer path
canonical/commands/r-util-lib-sync.md · 104 lines

The source is not reproduced here

Licensed GPL-2.0

The repository is licensed GPL-2.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 5d ago Changed · -5 lines · -12 tokens per session 0aec91f9508d
  2. 8d ago First seen · 109 lines · 12 tokens per session scan B 9af3ffbd58f7

Subscribe to this mod's changes

r-util-lib-sync is a command published in the GitHub repository rfxn/rdf (18 stars, last pushed 5d ago), licensed GPL-2.0. It costs nothing until one of its globs matches a file; then it loads 813 tokens. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.