Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@Cin7 Core MCP How many of SKU ABC-123 do we have in stock, and where?"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
A Claude Desktop extension that lets you ask Claude about stock levels and purchase orders in your Cin7 Core account.
It is read-only. The server sends only GET requests to the Cin7 Core API, so it reads your data and leaves it unchanged.
Tool | Answers |
| How many of a product are in stock, where, and how many are on order |
| What purchase orders exist, from which supplier, and when they are due |
| What is on one purchase order and what has arrived |
Example prompts:
"How many of SKU ABC-123 do we have, and where?"
"Which purchase orders are in status ORDERED?"
"Show me purchase order PO-00123."
Related MCP server: Skulabs MCP Server
You need:
Claude Desktop on macOS or Windows
A Cin7 Core login with the "Settings: Cin7 Core API Setup" permission
The extension asks for two values when you install it: an Account ID and an API Application Key. You create both inside Cin7 Core.
Log in to Cin7 Core and open Integrations, then API. You can also go straight to https://inventory.dearsystems.com/ExternalAPI.
On the API Integration page, click the + icon at the top right.
Enter a name such as "Claude" and click Create.
Open the Setup tab. It shows the Account ID and the Key. Keep this page open so you can copy both in step 3.
Good to know:
Your Cin7 Core user needs the Settings: Cin7 Core API Setup permission to create keys. If the API page is missing, ask your Cin7 Core administrator for that permission.
Create a separate API application for Claude. Cin7 Core's limit of 60 requests per minute applies to each application, so Claude gets its own allowance.
Cin7 Core's standard plan includes two external integrations. If your account already uses two, you may need to add a licence under My Subscription first.
Treat the Account ID and Key like a login and password. Paste them only into the extension's install screen.
These steps follow Cin7's help articles Connecting to the Cin7 Core API and Zapier Integration.
Download cin7-core.mcpb. This link always gives you the newest version.
Update Claude Desktop to the latest version and restart it.
Open Settings, then Extensions, then Advanced settings.
Click Install Extension and choose the .mcpb file you downloaded.
Claude Desktop shows a notice that the extension is unsigned. Continue.
Paste the Account ID and the Key from Cin7 Core, then finish the install.
Claude Desktop stores both keys in your operating system's secure storage (Keychain on macOS, Credential Manager on Windows).
Start a new chat and ask:
What stock do we have?
Claude asks for permission the first time it uses a tool. Approve it, and the answer comes from your Cin7 Core account.
On a Team or Enterprise plan, an Owner or Primary Owner can upload the extension once so members install it from inside Claude Desktop. These steps follow Anthropic's guide, Enabling and using the desktop extension allowlist.
Open Claude Desktop and click your initials or name in the lower left corner.
Open Organization settings, then Connectors, and switch to the Desktop tab.
Click Add custom extension and choose the .mcpb file. It appears under Custom team extensions.
Click ... next to it, then Add to team. This adds it to your allowlist and enables it for your team.
Members then install it from the extension list in Claude Desktop and paste the Cin7 Core Account ID and Key when asked. See Get your Cin7 Core credentials.
The allowlist is off by default, and the Allowlist toggle sits on the same Desktop tab. Read Anthropic's guide before switching it on, because it changes what everyone in the organization can use:
Desktop extensions that members already installed are removed from their Claude Desktop.
Members can install only the extensions on the allowlist, and only from the in-app list.
Members need Claude Desktop 0.13.91 or later.
Download the newest cin7-core.mcpb from the same link.
On the Desktop tab, open the ... menu next to the extension and choose Upload new version.
Choose the new file.
Claude Desktop accepts the upload when the new file has a higher version number and the same name, which every release of this extension does.
What you see | What to do |
"Cin7 rejected the credentials" | Open the extension's settings in Claude Desktop and paste the Account ID and Key again. Check for stray spaces. |
"Cin7's rate limit was reached" | Wait a minute and ask again. Cin7 Core allows 60 requests per minute. |
The tools are missing from the chat | Check that the extension is enabled under Settings, Extensions, then restart Claude Desktop. |
Nothing happens when you choose the file | Update Claude Desktop, then try double-clicking the |
A product is missing from stock results | Cin7 Core may leave out products that have no stock record. |
Download the file again from the link in step 2 and install it the same way. Privately shared extensions update when you install the newer file.
This is an early version.
Tested: the automated test suite, install and key delivery in Claude Desktop on macOS using a test build, and the response to incorrect keys against the live Cin7 Core API.
Still to be tested: results from a live Cin7 Core account with valid keys, and installation on Windows.
Requires Node.js 20 or later.
npm install
npm test
npm run packnpm run pack builds the server into a single file and writes cin7-core.mcpb to the project root.
To run the server during development, add it to claude_desktop_config.json with CIN7_ACCOUNT_ID and CIN7_APPLICATION_KEY set in its env, pointing node at bundle/server/index.js.
Every push to main runs the typecheck and tests, builds the bundle, and saves it as a workflow artifact. A GitHub release is published when the version has no release yet.
To cut a release, set the new version in package.json, bundle/manifest.json and src/index.ts, then push to main. The build fails when the three disagree.
This server cannot be deployed
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