by jdshfhds
Buyer-run, ad-neutral shopping-agent MCP software with deterministic ranking, signed purchase mandates, and a local audit trail.
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# Add to your Claude Code skills
git clone https://github.com/jdshfhds/northcinderGuides for using ai agents skills like northcinder.
Last scanned: 8/19/2026
{
"issues": [],
"status": "PASSED",
"scannedAt": "2026-08-19T04:35:44.664Z",
"npmAuditRan": true,
"pipAuditRan": true,
"promptInjectionRan": true
}Make your shopping agent compare, explain, and ask before buying.
NorthCinder helps your AI agent search for products, compare them against your brief, and show why one option ranks above another. Seller payment and affiliate data never improve a result's position.
NorthCinder runs on your computer alongside the AI app you already use. There is no NorthCinder account or cloud service.
You need Node.js 20 or later and an AI app that supports MCP. MCP is the standard the app uses to connect to tools running on your computer.
npx northcinder init
The initializer walks you through setup and prints the configuration to add to your AI app. Once connected, try a specific brief:
Find black wool running shoes under $130. Compare price, delivery, fit, and merchant trust. Tell me why the winner ranked first and which options were ruled out.
Results reported from a browser are clearly marked as agent-observed. You can compare them and open the product page, but NorthCinder will not use them for automated checkout or a background price watch until a direct store connection confirms the offer.
Store access varies because each platform has different rules. NorthCinder reports a store as unavailable or blocked when it cannot search it, rather than presenting partial coverage as a complete market search.
| Store | What works today |
|---|---|
| Shopify | Catalog search is available after additional Shopify setup. The older per-store connection is no longer current. |
| WooCommerce | Works with stores that expose WooCommerce's public Store API. |
| eBay | Native search requires approved eBay Buy API access. |
| Etsy | Native search requires approved Etsy app access. |
| Amazon | Read-only comparison can use a browser profile you control. It stops at challenges and does not check out. |
When a native store connection is unavailable, your agent may still compare permitted product pages with browser tools it already has. NorthCinder accepts only product facts needed for comparison. It does not take over the browser or ask for cookies, page contents, passwords, one-time codes, or your AI provider key.
NorthCinder is software you run. The repository owner does not operate a NorthCinder service.
NorthCinder is open source under the MIT License.
northcinder is an open-source ai agents skill for AI coding assistants such as Claude Code, Codex CLI, and ChatGPT, built by jdshfhds. Buyer-run, ad-neutral shopping-agent MCP software with deterministic ranking, signed purchase mandates, and a local audit trail. It has 1,158 GitHub stars.
Yes. northcinder passed SkillsLLM's automated security scan — a dependency vulnerability audit plus prompt-injection heuristics — with no high-severity issues. You can read the full report in the Security Report section on this page.
Clone the repository with "git clone https://github.com/jdshfhds/northcinder" and add it to your Claude Code skills directory (see the Installation section above).
northcinder is primarily written in JavaScript. It is open-source under jdshfhds on GitHub, so you can review or fork the full source.
Yes. SkillsLLM lists many other AI Agents skills you can browse and compare side by side. Open the AI Agents category from the badge at the top of this page, or use the Related Skills and comparison links further down to weigh northcinder against similar tools.
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