SkillNet is infrastructure for finding, creating, evaluating, combining, and coordinating reusable capabilities for AI agents. Agent developers use it as a searchable and installable library of skills and as a system for selecting skills for particular tasks. The catalogue contains skills that can be discovered, installed, or used with SkillNet.
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 zjunlp/SkillNet --skill webshop-product-detail-checkgit clone --depth 1 https://github.com/zjunlp/SkillNetWrote 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/zjunlp/skillnet/webshop-product-detail-check)<a href="https://agentmods.dev/skills/zjunlp/skillnet/webshop-product-detail-check"><img src="https://agentmods.dev/badge/skills/zjunlp/skillnet/webshop-product-detail-check/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/zjunlp/skillnet/webshop-product-detail-check"><img src="https://agentmods.dev/badge/skills/zjunlp/skillnet/webshop-product-detail-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00076 | $0.00833 |
| Opus 5 | $0.00038 | $0.00417 |
| Sonnet 5 | $0.00015 | $0.00167 |
| Haiku 4.5 | $0.00008 | $0.00083 |
Grade A, and why
webshop-product-detail-check 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 8d 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 — 63 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Skill: Product Detail Verification
Trigger
Activate this skill when the agent has navigated to a specific product's detailed page from a search results list. The agent should have a user query containing specific requirements (e.g., product type, attributes, price constraints).
Core Objective
Analyze the product detail page to confirm if the product meets all user-specified constraints. Provide a clear "Proceed" or "Reject" recommendation.
Execution Workflow
-
Parse User Requirements: Extract key constraints from the user's instruction. Primary constraints are typically Price and Key Attributes (e.g., "long", "clip-in", "natural looking"). Store these in a structured format.
-
Scrape Product Page Data: Systematically extract the following information from the current page observation:
- Product Title
- Price
- Key Description Snippets (from Description/Features sections)
- Rating (if available)
- Availability of "Buy Now" action.
-
Constraint Verification: Compare the scraped data against the user's requirements.
- Price Check: Is the product price strictly less than the user's maximum? (e.g., < $40.00).
- Attribute Check: Do the title and description contain terms matching the user's key attributes? (e.g., confirm "clip-in" and "natural looking" are present).
- Suitability Flag: Product is suitable only if ALL hard constraints (price, mandatory attributes) are satisfied.
-
Decision & Action:
- If SUITABLE: Conclude the product matches requirements. The recommended action is
click[buy now]. - If NOT SUITABLE: Conclude the product fails one or more constraints. The recommended action is to return to search (
click[back to search]) to find another candidate.
- If SUITABLE: Conclude the product matches requirements. The recommended action is
Output Format
Your response must use the following format:
Thought: [Your reasoning, summarizing the user's constraints, the product details found, and the result of the verification check.]
Action: [The single, valid action to take: click[buy now] or click[back to search]]
What ships with it
1 file 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.
- 8d ago First seen · 63 lines · 76 tokens per session scan A cea5530589d2
webshop-product-detail-check is a skill published in the GitHub repository zjunlp/SkillNet (1,256 stars, last pushed yesterday), licensed MIT. It adds 76 tokens to every session and 833 once invoked, about $0.0004 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 2026-09-03.
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