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.
npx skills add linkfox-ai/linkfox-skills --skill linkfox-ebay-searchgit clone --depth 1 https://github.com/linkfox-ai/linkfox-skillsWrote 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.
[](https://agentmods.dev/skills/linkfox-ai/linkfox-skills/linkfox-ebay-search)<a href="https://agentmods.dev/skills/linkfox-ai/linkfox-skills/linkfox-ebay-search"><img src="https://agentmods.dev/badge/skills/linkfox-ai/linkfox-skills/linkfox-ebay-search/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.
<a href="https://agentmods.dev/skills/linkfox-ai/linkfox-skills/linkfox-ebay-search"><img src="https://agentmods.dev/badge/skills/linkfox-ai/linkfox-skills/linkfox-ebay-search.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket warn
- Snyk warn
- NVIDIA SkillSpector warn
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 System Prompt Leakage · line 177 Skill contains instructions that could directly expose system prompts, internal rules, or hidden instructions to users or external parties.Fix: Remove any instructions that reveal, print, or output system prompts or internal rules. System instructions should never be exposed to end users.
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 | $0.00143 | $0.02749 |
| Opus 5 | $0.00072 | $0.01375 |
| Sonnet 5 | $0.00029 | $0.00550 |
| Haiku 4.5 | $0.00014 | $0.00275 |
Grade A, and why
linkfox-ebay-search 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 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.
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.
How it starts
The opening of the file, as written. The whole thing — 235 lines — stays where its author put it; the contents beside it link to each section on GitHub.
eBay Product Search
This skill guides you on how to search and retrieve eBay product listing data, helping e-commerce sellers and buyers find products, compare prices, and analyze market trends across eBay's global marketplaces.
Core Concepts
eBay Product Search provides access to eBay's front-end product listing data. It supports keyword-based search with rich filtering options including price range, item condition, buying format, sort order, seller location, and more. Results include product details such as title, price, shipping info, seller rating, sold quantity, and item condition.
Marketplace logic: The ebayDomain parameter controls which regional eBay site is searched. The default is ebay.com (US). When a user refers to a country or region, map it to the corresponding eBay domain (e.g., UK -> ebay.co.uk, Germany -> ebay.de).
Buying format: eBay supports multiple buying formats -- Auction for bid-based listings, BIN (Buy It Now) for fixed-price listings, and BO (Best Offer) for negotiable listings.
Parameter Guide
| Parameter | Type | Required | Description | Default |
|---|---|---|---|---|
| keyword | string | No | Search keyword, up to 1024 characters | - |
| ebayDomain | string | No | eBay marketplace domain | ebay.com |
| page | integer | No | Page number for pagination | 1 |
| pageSize | integer | No | Results per page: 25, 50, 100, or 200 | 50 |
| orderBy | string | No | Sort order (see Sort Options below) | 12 (Best Match) |
| priceMin | number | No | Minimum price filter | - |
| priceMax | number | No | Maximum price filter | - |
| itemCondition | string | No | Item condition code(s), pipe-separated (e.g., 1000|3000) |
- |
| buyingFormat | string | No | Buying format: Auction, BIN, or BO | - |
| showOnly | string | No | Display filters, comma-separated (e.g., Sold,Complete) |
- |
| location | integer | No | Seller location country code | - |
| prefLoc | string | No | Preferred location scope: 1=Domestic, 2=Regional, 3=Worldwide | - |
| zipCode | string | No | ZIP/postal code for regional delivery filtering | - |
| categoryId | integer | No | eBay category ID | - |
| noCache | boolean | No | Bypass cache for fresh results | false |
What ships with it
4 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.
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.
- 11d ago First seen · 235 lines · 143 tokens per session scan A f761804186bc
linkfox-ebay-search is a skill published in the GitHub repository linkfox-ai/linkfox-skills (101 stars, last pushed 21d ago), licensed MIT. It adds 143 tokens to every session and 2,749 once invoked, about $0.0007 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 2026-08-30.
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