finding-cd-bundles

finding-cd-bundles is a skill for Claude Code, Codex from rianvdm/product-ai-public. It costs 173 tokens per session (9,664 once invoked), scanned A, original, MIT.

A guide for pricing CDs saved in a Discogs wantlist against live eBay and Discogs listings. It uses the exact pressing’s barcode to distinguish it from other editions and checks whether one seller has several wanted albums.

In plain words
What is it for?
Use it to find the cheapest copy of each wanted album, compare eBay with Discogs, identify bundle opportunities, and check what a named Discogs seller has available.
Why use it?
It helps avoid comparing the wrong edition and shows whether buying from one seller or marketplace could reduce the total cost.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument; mentions OpenCode.

Good fit Use it to find the cheapest copy of each wanted album, compare eBay with Discogs, identify bundle opportunities, and check what a named Discogs seller has available.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rianvdm/product-ai-public/finding-cd-bundles
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 rianvdm/product-ai-public --skill finding-cd-bundles
Clone the repo
git clone --depth 1 https://github.com/rianvdm/product-ai-public

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 finding-cd-bundles

README.md
[![agentmods](https://agentmods.dev/badge/skills/rianvdm/product-ai-public/finding-cd-bundles/github.svg)](https://agentmods.dev/skills/rianvdm/product-ai-public/finding-cd-bundles)
Your own site
<a href="https://agentmods.dev/skills/rianvdm/product-ai-public/finding-cd-bundles"><img src="https://agentmods.dev/badge/skills/rianvdm/product-ai-public/finding-cd-bundles/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 finding-cd-bundles

Your own site · 80×15
<a href="https://agentmods.dev/skills/rianvdm/product-ai-public/finding-cd-bundles"><img src="https://agentmods.dev/badge/skills/rianvdm/product-ai-public/finding-cd-bundles.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 173 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,664 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Privilege Escalation · line 111
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
How audits are shown
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 5.1 $0.00173 $0.09664
Opus 5 $0.00086 $0.04832
Sonnet 5 $0.00035 $0.01933
Haiku 4.5 $0.00017 $0.00966

Measured 11d ago against content hash 83bdc5e3e95d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

finding-cd-bundles scanned grade A 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 11d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

`deepdiscount.com` is behind **Cloudflare Bot Management** — every path including the homepage returns `403` with a 12-byte body and sets `__cf_bm`. Both curl-with-a-browser-UA and WebFetch get the same 403. **The `claud
music/finding-cd-bundles/SKILL.md · 354 lines

How it starts

The opening of the file, as written. The whole thing — 354 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Buying wantlist CDs on eBay

Overview

Price Rian's Discogs wantlist against live eBay listings — cheapest copy of each album, and whether any seller holds enough of them to be worth bundling.

Core insight: a CD remaster carries its own UPCThriller is 074643811224 original, 074646607329 for the 2001 Special Edition, 888750438621 for the 2014 reissue. So searching eBay by the barcode of the exact wantlist pressing returns that master and skips the remasters automatically. The barcode does the same job finding-original-cds does by hand. That's the whole trick; don't re-derive it.

Corollary that matters: this tool inherits its master judgement entirely from the wantlist. If a remaster got wantlisted by mistake, this faithfully finds remasters. The wantlist is the filter — curate it with finding-original-cds first.

And check the other marketplace. Every album is also priced against the Discogs marketplace floor, because eBay loses that comparison more often than not — see The Discogs cross-check below. Never report an eBay price without it.

Buy the subset, and message the seller

Two things about bundles that are easy to get wrong, both learned the hard way on 2026-08-05:

1. Never buy a whole bundle — buy the subset that wins. A seller's price is competitive on some of their stock and bad on the rest. resellingroly held 5 wantlist albums; four of them beat the market but their Nevermind was $21.99 against $13.20 elsewhere. Buy those four, get Nevermind somewhere else. Evaluating bundles all-or-nothing made every one of 51 look like a loss — the script now computes the optimal subset (include an item whenever the seller's price undercuts the cheapest landed price elsewhere; shipping is paid once, which is what creates the room).

2. The combined-shipping discount is negotiable, not a fixed property of the seller. eBay exposes no combined-shipping rule through the API, and plenty of sellers have none configured — resellingroly charged 4 × per-item shipping to the cent, $18.98 on $24.23 of CDs. Rian messaged them and they refunded the excess. So the "if they combine" figure isn't hypothetical; it's what you get by asking, and asking worked first try. That purchase saved ~$8.66 over buying the same four separately.

Read the full file on GitHub · 354 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. 11d ago First seen · 354 lines · 173 tokens per session scan A 83bdc5e3e95d

Subscribe to this mod's changes

finding-cd-bundles is a skill published in the GitHub repository rianvdm/product-ai-public (16 stars, last pushed 2d ago), licensed MIT. It adds 173 tokens to every session and 9,664 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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