which-to-buy SKILL.md skillB
which-to-buy from mostafa-drz/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add mostafa-drz/claude-skills/which-to-buy@git:20260930.1b45796Pins git:20260930.1b45796 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- mostafa-drz/claude-skills
- Path
desktop/which-to-buy/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260930.1b45796, committed Sep 30, 2026
- Size
- 9,997 bytes
- Repository stars
- 5
- License
- MIT
Compares 2-5 products side by side on one page: specs, prices, visual differences, and a pick for what matters to you. Use for "which should I buy", "X vs Y" or "compare these".
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Which to buy Buying something shouldn't take eleven tabs. This skill researches 2–5 products, lines their specs up side by side on one calm page, shows **where they actually differ**, and puts a recommendation on top that's picked for **what matters to you**, not for a generic "best". When you want to dig in, every product and question on the page copies a ready-made prompt you paste back into this chat. It starts automatically when the request matches: "Sony XM6 vs Bose QC Ultra", "which robot vacuum should I get under $500?", "compare these three" plus links. It's not for browsing a whole category (it asks you to narrow to five), and it never buys anything. One reference, **read it every run**: [`research.md`](./references/research.md) (where specs and prices come from, what to compare, how to pick). Data shape: [`evals/example-compare.json`](./evals/example-compare.json). Defaults: [Configuration](#configuration), at the end of this file. --- ## The flow ``` Compare progress: - [ ] 0. Settings: the chat, then saved settings in memory, then Configuration - [ ] 1. Frame: what, which candidates (2-5), what matters, budget …
Read the whole file at its exact version.
How to install
mdr add mostafa-drz/claude-skills/which-to-buy@sha256:132737c8856b111bThe line at the top of this page pins the label git:20260930.1b45796, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_agqp55dridjhsrtm)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 30, 2026.
Audit of the latest version
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9997 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
mostafa-drz/claude-skills · 5 stars · license MIT · pushed 2026-10-26 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_agqp55dridjhsrtm GET https://markdownregistry.com/api/v1/resolve?ref=mostafa-drz/claude-skills/which-to-buy GET https://markdownregistry.com/api/v1/blob/132737c8856b111bdac7ea7c4734c7c3d921ff9bbeaafd7880b9430603a18e5b
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.