# Store refs (https://sellersheetai.com/docs/mcp-api/store-refs) > Every store-scoped call names its store as - — the store and the marketplace in one string, taken verbatim from get_user_context. A store ref is the store's name, a dash and the marketplace's country code: , `myStore-DE`, . noon accounts use the same shape, such as `myNoon-AE`. It is the `store` argument of every store-scoped tool — over MCP, over the Tool API and in the sidebar alike. ## Take refs from get_user_context — never build one [#take-refs-from-get_user_context--never-build-one] `get_user_context` returns a ready-made `store_refs` list for each store. Your agent passes one **verbatim**. It never glues a name to a country code itself, and never guesses a marketplace: picking one by hand is how a call lands on a marketplace your plan doesn't cover. No Amazon seller (SP-API) tool takes a separate country code — the ref already names the marketplace. The Amazon Ads tools are the exception: they also take a `countryCode` for the advertising profile. ## A bare name is refused — with the answer [#a-bare-name-is-refused--with-the-answer] A bare store name (`myStore`) names the store but not the marketplace, so it is refused with a 400. The refusal lists **every ref that would have worked**, so your agent corrects itself in one step: For a store selling in the US, Canada and Mexico, that is `myStore-US`, `myStore-CA` and `myStore-MX`. A ref that matches two of your stores is refused too, the same way — rename one of them in the app. ## Paused stores [#paused-stores] A store whose **every** marketplace is inactive on your plan stops syncing, so its report data would be out of date. Rather than answer from stale data, SellerSheet **refuses** the store (403), naming it, your plan's usage and both remedies: * upgrade the plan, or * free a marketplace slot under **My Stores → Edit Marketplaces** — in the app, **Settings → Stores & Marketplaces → Edit markets**. `get_user_context` marks such a store `paused` with the reason, so your agent knows before it picks a store. A store with only **some** marketplaces active is not paused: it keeps syncing those and answers for them. noon marketplaces count against the same plan quota as Amazon ones, so a noon account can be the reason an Amazon marketplace is not active. ## Stores shared with you [#stores-shared-with-you] A store another account shares with you appears in your `store_refs` like your own. What you can do on it is what its owner granted you — and a key never reaches beyond that. See [Stay in control](/docs/mcp-api/control).