usefulapiCin7 Core MCP server
Read Cin7 Core products, stock by location, sales, purchases, customers, suppliers and transfers. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
What can I ask?
Turn on the Cin7 Core connector, then ask in plain words. The AI picks the tools.
- How much stock do we have of each product at each location?
- Which sales orders are still open for Acme Ltd?
- Which purchase orders are still waiting to be received from suppliers?
- Which stock transfers between our warehouses are still in transit?
What you can do with Cin7 Core in Claude and ChatGPT
For inventory and operations teams who run stock, sales and purchasing in Cin7 Core.
Check stock levels by product and location
The AI reads on hand, allocated, available, on order and in transit stock per product, location, bin and batch. It can filter by SKU or location name.
Find open sales orders for a customer
The AI lists sales by order number or customer with their order, pick, pack, ship, invoice and payment statuses, and opens one sale for its lines.
Check purchase orders waiting to be received
The AI lists purchases with supplier, required-by date and receiving and payment statuses, and opens one for its lines and stock received.
Track stock transfers between locations
The AI lists transfers with from and to location, status and dates, and opens one for its lines, bins and batches.
Review stock adjustments
The AI lists stock adjustments with date, status and reference, and opens one for its lines with product, location, batch, quantity and unit cost.
Look up a product with its suppliers and prices
The AI finds a product by name or SKU and opens it with its bill of materials, suppliers, stock movements, reorder levels and customer-specific prices.
How do I connect Cin7 Core?
Before you connect
The login page asks for your Account ID and API Application key.
In Cin7 Core (formerly DEAR Inventory) go to Integrations → API (inventory.dearsystems.com/ExternalAPI), add an API Application if you have none, and copy the Account ID and the Key. Each company has its own Account ID. The API allows 60 calls per minute per application. Your credentials are used only to call the Cin7 Core API on your behalf; they are never shown to anyone.
Claude claude.ai · Desktop
- Open Customize → Connectors, then click + Add → Add custom connector.
- Enter the name Cin7 Core and this URL, then click Add:https://
cin7-core. usefulapi. io/ mcp - Claude opens the login page: enter your Account ID and API Application key.
- In a chat, click + → Connectors and turn on Cin7 Core.
Team and Enterprise: an Owner adds the connector for the organization first.
ChatGPT chatgpt.com
- Open Plugins, click +, then Add custom MCP server.
- Enter the name Cin7 Core and this URL, choose OAuth as the authentication, confirm the warning and create it:https://
cin7-core. usefulapi. io/ mcp - ChatGPT opens the login page: enter your Account ID and API Application key.
- In Plugins, install Cin7 Core, then choose it in a chat.
No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Claude Code
Run this command, then run /mcp in Claude Code to log in:
Cursor
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"cin7-core": {
"url": "https://cin7-core.usefulapi.io/mcp"
}
}
} VS Code
Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"cin7-core": {
"type": "http",
"url": "https://cin7-core.usefulapi.io/mcp"
}
}
} Codex
Run these commands. The second one opens the login page:
Other clients
Windsurf, Cline, Zed and other MCP clients: add this URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser.
Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Account ID and API Application key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
Pricing
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper Cin7 account | $9/mo · $90/yr | 10,000 tool calls / month |
| Pro+per Cin7 account | $39/mo · $390/yr | 100,000 tool calls / month |
Each paid plan covers this Cin7 Core server only. Ask your AI to run cin7core_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with cin7core_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with cin7core_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
Tools 21
Show all 21 tools (the AI picks them for you)
Read only · 17
- Get company
cin7core_get_companyThe Cin7 Core company these credentials belong to: company name, base currency, time zone, default weight/dimension units, lock date and tax calculation method. Good first call. - List locations
cin7core_list_locationsList stock locations (warehouses) with their id, name, default flag, address, bins and pick zones. Location names are what the stock-availability and sale/purchase tools use. - List products
cin7core_list_productsList products (active by default): id, SKU, name, category, brand, type (Stock/Service), costing method, unit of measure, barcode, price tiers, average cost, reorder settings, status and description. Filter by name or SKU (contains) or by modification date. - Get product
cin7core_get_productOne product by id (including deprecated ones) with its full detail; optionally its bill of materials, suppliers, stock movements, attachments, reorder levels and customer-specific prices. - Get stock availability
cin7core_get_stock_availabilityStock levels per product, location, bin and batch: on hand, allocated, available, on order, in transit, stock on hand value and next delivery date. Filter by product id, name (starts with), exact SKU, location name, batch/serial number or category. - List customers
cin7core_list_customersList customers (active by default): id, name, display name, currency, payment term, tax rule, price tier, sales rep, location, credit limit and hold, status, addresses and contacts. Filter by name (starts with), contact name/email, or modification date. - Get customer
cin7core_get_customerOne customer by id (including deprecated ones), optionally with its customer-specific product prices. - List suppliers
cin7core_list_suppliersList suppliers (active by default): id, name, currency, payment term, tax rule, discount, status, addresses and contacts. Filter by name (starts with) or modification date. - Get supplier
cin7core_get_supplierOne supplier by id (including deprecated ones). - List sales
cin7core_list_salesList sales (sale orders) with order number, status, customer, order/invoice dates, invoice and paid amounts, currencies, and the quote/order/pick/pack/ship/invoice/payment statuses. Search by order number, customer, invoice number or customer reference; filter by dates and statuses. - Get sale
cin7core_get_saleOne sale by id with everything on it: customer, contact, addresses, terms, location, notes, quote, order lines, fulfilments (pick/pack/ship and tracking), invoices, credit notes, payments, attachments and inventory movements. - List purchases
cin7core_list_purchasesList purchases (purchase orders) with order number, status, supplier, order/invoice/required-by dates, invoice and paid amounts, currencies, type (simple/advanced/service) and the order/receiving/invoice/payment statuses. - Get purchase
cin7core_get_purchaseOne purchase by id (simple, advanced or service purchase): supplier, contact, addresses, terms, location, required-by date, note, order lines, stock received, put away, invoices, credit notes, payments and attachments. GET /advanced-purchase?ID=… (the vendor endpoint that serves every purchase type). - List stock adjustments
cin7core_list_stock_adjustmentsList stock adjustments: task id, number, effective date, status, expense account, reference and comment. - Get stock adjustment
cin7core_get_stock_adjustmentOne stock adjustment by task id with its lines (product, location, batch, quantity, unit cost) and transactions. - List stock transfers
cin7core_list_stock_transfersList stock transfers between locations: task id, number, from/to location, status, departure and completion dates, reference. - Get stock transfer
cin7core_get_stock_transferOne stock transfer by task id with its lines (product, quantity, from/to bin, batch) and status.
Your usefulapi plan · 4
- Usage status (free-tier meter)
cin7core_usage_statusReport the caller's current usage: the plan, calls used this month, the limit of the plan (the free monthly cap or the Pro fair use limit), remaining, and whether the limit is reached. Read-only; does not count against the meter. - Request a missing feature
cin7core_request_featureTell usefulapi that the user needs something the Cin7 Core tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. - Upgrade to Pro or Pro+
cin7core_upgradeGet a paid plan for Cin7 Core (the free tier caps monthly usage). Pro: 10,000 tool calls a month, for normal use — plan "monthly" ($9/month) or "yearly" ($90/year, 2 months free). Pro+: 100,000 tool calls a month, for automations and heavy use — plan "plus" ($39/month) or "plus_yearly" ($390/year). Without a plan it returns both Pro and Pro+, each with a payment link, for the user to choose; with a plan, one link. An existing Pro subscription changes to Pro+ in place: call without confirm first, as the reply states the exact charge for this account (the price difference for the rest of the period, or in a free Pro trial the full Pro+ price, as the trial ends); then call with confirm: true. Cancel any time: the plan then runs to the end of the paid period, so it also suits a one-time job. A link opens Stripe Checkout in the browser; after payment the account upgrades automatically. Does not count against the meter. - Cancel the Pro subscription
cin7core_cancel_subscriptionCancel the caller's Cin7 Core Pro subscription at the end of the paid period (no refund for the current period; Pro continues until then, then the free tier applies). Requires confirm: true. Run cin7core_upgrade later to undo the cancel before the period ends. Does not count against the meter.
FAQ
What can I do with Cin7 Core in Claude or ChatGPT?
Check stock levels by product and location. Find open sales orders for a customer. Check purchase orders waiting to be received. Track stock transfers between locations. Review stock adjustments. Look up a product with its suppliers and prices. See what you can do for the details.
Is this an official Cin7 Core product?
No. usefulapi is an independent service. It is not affiliated with or endorsed by Cin7 Core. The server calls the Cin7 Core API with your own Cin7 Core access, so it sees only the data that your account can see.
Can I connect Cin7 Core to Claude or ChatGPT?
Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.
What do I need to connect?
The login page asks for your Account ID and API Application key. See Before you connect for where to find them.
Do I put my Cin7 Core key or an Authorization header in the client config?
No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Account ID and API Application key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
How do you keep my Cin7 Core credentials?
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Cin7 Core API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Cin7 Core.
Can the AI change my Cin7 Core data?
All 17 Cin7 Core tools are marked read-only.
What does it cost?
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this Cin7 Core server only. Cancel any time: your paid plan then runs to the end of the paid period. Run cin7core_usage_status to see how many calls you used.
How do I subscribe or cancel?
Ask the AI to run cin7core_upgrade and choose Pro or Pro+, billed monthly or yearly: it returns a Stripe Checkout link. If you already have Pro, ask to change it to Pro+. After you confirm, your existing subscription changes in place, keeps its billing interval and charges the price difference for the rest of the period immediately. To cancel, run cin7core_cancel_subscription. Your paid plan continues to the end of the paid period.
What if a Cin7 Core tool that I need is missing?
Tell the AI what you wanted to do. It can send the request with cin7core_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Which AI clients can I use?
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.