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 agentmods add skills/zjunlp/skillnet/webshop-purchase-executornpx skills add zjunlp/SkillNet --skill webshop-purchase-executorgit 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-purchase-executor)<a href="https://agentmods.dev/skills/zjunlp/skillnet/webshop-purchase-executor"><img src="https://agentmods.dev/badge/skills/zjunlp/skillnet/webshop-purchase-executor.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00063 | $0.00501 |
| Opus 5 | $0.00032 | $0.00251 |
| Sonnet 5 | $0.00013 | $0.00100 |
| Haiku 4.5 | $0.00006 | $0.00050 |
Grade A, and why
webshop-purchase-executor 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 2d 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.
What it actually says
Skill: webshop-purchase-executor
Purpose
Execute the final purchase transaction for a verified product on an e-commerce platform. This skill is the terminal action in a shopping workflow, initiated only after a product has been confirmed to meet the user's criteria (e.g., price, description).
When to Use
- Trigger: You are on a product detail page.
- Prerequisite: The product has been verified against the user's requirements (e.g., price < $40.00, "natural looking").
- User Intent: The user has made a decision to buy the product.
- Available Action: A purchase button (e.g., "Buy Now") is present in the list of clickable elements.
Core Action
Perform a click action on the purchase button.
Execution Logic
- Locate Purchase Button: Identify the purchase button from the available actions. Common identifiers include:
buy nowadd to cart(if the instruction implies immediate purchase)purchase
- Validate Context: Ensure you are on a product page and the prior verification step is logically complete.
- Execute Click: Perform the
click[purchase_button_value]action using the exact value from the available actions list.
Important Notes
- Do not use this skill for browsing, searching, or product comparison.
- The skill assumes price and specification validation occurred in a previous step.
- If multiple purchase options exist (e.g., "Buy Now", "Add to Cart & Checkout"), prefer the most direct path to complete the transaction, typically "Buy Now".
Example
Scenario: The user wants a natural-looking wig priced under $40.00. You are on a product detail page for "Natural Looking Human Hair Wig - $34.99" and have verified it meets all criteria.
Thought: The product matches the user's requirements (natural looking, price $34.99 < $40.00). I should proceed with the purchase.
Action: click[Buy Now]
Observation: The purchase is confirmed and the transaction is complete.
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.
- 2d ago First seen · 41 lines · 63 tokens per session scan A be9812cc1044
webshop-purchase-executor is a skill published in the GitHub repository zjunlp/SkillNet (1,253 stars, last pushed yesterday), licensed MIT. It adds 63 tokens to every session and 501 once invoked, about $0.0003 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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