NorthCinder
NorthCinder is an open-source MCP server that lets AI apps compare products across chosen stores and requires the buyer's approval before any purchase.
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Pricing and API checked by an OpenBeat editor on Nov 12, 2026 · facts from the maker’s own site ·
Tool insights
NorthCinder lets an AI app compare products across several store sources and shows where each fact came from. It also stops any purchase until the buyer gives a fresh signed approval.
AI shopping helpers can mix up sources and buy without a clear human decision. NorthCinder keeps comparisons traceable and puts the final purchase step in the buyer's hands.
Buyers who run their own MCP-capable AI app and want shopping comparisons they can check. It is not a fit for people who want a hosted service, since nobody operates one.
What it does
NorthCinder is an open-source MCP server from the maker cinderline. It lets an AI app compare products across store sources the buyer chooses. For each result it shows the source of each fact. Ranking happens locally and comes with machine-readable reasons.
Before any checkout, it asks for a fresh signed approval from the buyer. The audit log and purchase approvals stay on the buyer's own computer.
Key features
- Compares products across chosen store sources.
- Shows the source of each fact.
- Ranks results locally, with machine-readable reasons.
- Requires a fresh signed approval for every checkout.
- Keeps the audit log and purchase approvals on the local computer.
- Local mode runs without keys via
npx northcinder init. - Reminders only send notifications.
Store integrations listed are Shopify, WooCommerce, eBay and Etsy. Amazon is supported for read-only comparison.
Pricing
NorthCinder is open-source software under the MIT license. As of November 2026, the maker's page states no price, no paid plans and no hosted tier. Whether a free plan exists is not stated, but the software itself can be used under the license. Any costs would come from the AI app and model you connect to it, and those are not covered in the facts.
API and integrations
NorthCinder works through MCP, so it fits MCP-capable AI apps. It also has a command-line interface. An HTTP API is not stated on the maker's site, and no SDKs are listed. Docs and pricing links are not given. The GitHub repository and its changelog are the main references.
Good to know
- Node.js 20 or later is required.
- The repository owner does not operate a NorthCinder service. You run it yourself.
- No combination of host app and model is qualified for routine research use.
- Research results are provisional until the buyer checks them.
- Store coverage varies. Stores that are unavailable are reported.
- Recent releases: 0.1.2 (17 August 2026) published it as buyer-run open-source software. 0.2.0 and 0.2.1 (22 August 2026) added product and seller research resources, a buyer decision surface, and fixes to research evidence, decision text and adapters.
FAQ
Is NorthCinder free and open source?
Yes, NorthCinder is open-source under the MIT license. As of November 2026, the maker lists no price or paid plan. Whether a separate free plan exists is not stated on the maker's site.
Can NorthCinder buy things without my approval?
No. According to its feature list, NorthCinder requires a fresh signed approval for each checkout. The audit log and purchase approvals are kept on the buyer's local computer.
Which stores does NorthCinder work with?
It lists Shopify, WooCommerce, eBay and Etsy, plus Amazon for read-only comparison. Store coverage varies, and stores that are unavailable are reported.
What do I need to run NorthCinder?
You need Node.js 20 or later and an MCP-capable AI app, or the command line. Local mode runs without keys via `npx northcinder init`. There is no hosted service, because the repository owner does not operate one.
Are NorthCinder's research results reliable?
They are provisional until the buyer checks them. The maker also says no host and model combination is qualified for routine research use. Each fact shows its source so you can verify it.
Releases
No tracked releases yet.
In the news
No coverage yet.