Read orders, products, messages and sales stats; update orders and product stock in Sello. For online sellers who manage orders and stock across channels in Sello. Hosted by usefulapi — connect from Claude, ChatGPT, Cursor, or any MCP client.
Team and Enterprise: an Owner adds the connector for the organization first.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"sello": {
"url": "https://sello.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"sello": {
"type": "http",
"url": "https://sello.usefulapi.io/mcp"
}
}
}No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run these commands. The second one opens the login page:
Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see Before you connect.
List the orders with their rows and deliveries and open one to read the history.
sello_list_orders sello_get_order sello_list_order_rows sello_get_order_history
Read the stats summary, the daily and monthly turnover and the top sellers.
sello_get_stats_summary sello_get_daily_turnover sello_get_monthly_turnover sello_get_top_sellers
Read the total stock worth and the products with their change history.
sello_get_stock_worth sello_list_products sello_get_product_history
Set a new stock quantity for a product after a delivery.
Changes data · sello_get_product sello_update_product_quantity
Change an order, for example its status or a comment, when it ships.
Changes data · sello_list_statuses sello_update_order
Count the unread messages and read the latest ones. They include synchronization errors and warnings from your sales channels.
sello_count_unread_messages sello_list_messages
The login page asks for your Sello API key.
Create a key in Sello → Account settings (API keys). Your key is used only to call the Sello API on your behalf and to derive a private account id; it is never shown to anyone. Sello limits a key to 30 calls per minute.
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 Sello API 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.
Turn on the Sello connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
sello_get_account | read | Get account Show the Sello account: company, country, currency and invoice status. GET /account. |
sello_list_orders | read | List orders List recent orders with a limited set of fields (customer, status, total, paid/delivered flags). Use `sello_get_order` for rows. Optional local filter by `status_id`. GET /orders. |
sello_get_order | read | Get order Get one order with all fields. GET /orders/{id}. |
sello_list_order_rows | read | List order rows List the rows (products, quantity, price, tax) of one order. GET /orders/{id}/rows. |
sello_list_order_deliveries | read | List order deliveries List the deliveries (tracking) of one order. GET /orders/{id}/deliveries. |
sello_get_order_history | read | Get order history Show the change history of one order, 10 items per call. GET /orders/{id}/history. |
sello_list_products | read | List products List products with a limited set of fields (name, SKU, stock, prices per integration). Use `sello_get_product` for all fields. GET /products. |
sello_get_product | read | Get product Get one product with all fields, by Sello id or by your SKU (private reference). Give exactly one. GET /products/{id} or /products/sku/{sku}. |
sello_get_product_history | read | Get product history Show the change history of one product, 20 items per call. GET /products/{id}/history. |
sello_list_statuses | read | List order statuses List your order statuses (title, paid/delivered flags). Use the ids with `sello_update_order`. GET /status. |
sello_list_suppliers | read | List suppliers List your suppliers. GET /suppliers. |
sello_list_integrations | read | List integrations List the marketplace and webshop integrations connected to the account (status, market, last order check). Tokens are removed. GET /integrations. |
sello_list_messages | read | List messages List the last 100 marketplace sync messages (errors, warnings). Sello deletes them after 14 days. GET /messages. |
sello_count_unread_messages | read | Count unread messages Count unread sync messages. GET /messages/count. |
sello_get_stats_summary | read | Get stats summary Show the sales summary of the account. GET /account/stats. |
sello_get_daily_turnover | read | Get daily turnover Show turnover per day for the past 30 days, per integration id. GET /account/stats/turnover/daily. |
sello_get_monthly_turnover | read | Get monthly turnover Show turnover per month, per integration id. GET /account/stats/turnover/monthly. |
sello_get_stock_worth | read | Get stock worth Show the worth of the stock. GET /account/stats/stockworth. |
sello_get_top_sellers | read | Get top sellers Show the best selling products. GET /account/stats/topsellers. |
sello_update_order | write | Update order WRITE: change an order's status, notes or new-flag. Send only the fields to change. Get status ids from `sello_list_statuses`. A status change can trigger Sello automations (mail, stock). PUT /orders/{id}. |
sello_update_product_quantity | write | Update product stock WRITE: set the stock quantity of one product by Sello id or by your SKU (give exactly one). Sello then syncs the new quantity to all active marketplaces. PUT /products/{id} or /products/sku/{sku}. |
sello_usage_status | Usage status (free-tier meter) Report 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. | |
sello_request_feature | Request a missing feature Tell usefulapi that the user needs something the Sello 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. | |
sello_upgrade | Upgrade to Pro (unlimited*) Get Pro: unlimited tool calls (fair use limit: 10,000 a month) on Sello (the free tier caps monthly usage). Plans: "monthly" — $9/month; "yearly" — $90/year (2 months free). Cancel any time: Pro then runs to the end of the paid period, so it also suits a one-time job. *A fair use limit applies. For heavy use (near Pro's limit): "plus" or "plus_yearly" — Pro+, $39/month or $390/year, unlimited tool calls (fair use limit: 100,000 a month); an existing Pro subscription changes to Pro+ in place (needs confirm: true; the price difference for the rest of the period is charged at once). Otherwise returns a short link to open in your browser (it opens Stripe Checkout); after payment the account upgrades automatically. Does not count against the meter. | |
sello_cancel_subscription | Cancel the Pro subscription Cancel the caller's Sello 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 sello_upgrade later to undo the cancel before the period ends. Does not count against the meter. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper user | $9/mo · $90/yr | Unlimited* |
*Pro fair use limit: 10,000 tool calls a month on this server. For more, write to [email protected].
Pro covers this Sello server only. Subscribe with sello_upgrade (it returns a Stripe Checkout link). Cancel any time with sello_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running sello_upgrade before then undoes the cancel. Or write to [email protected].
Review today's orders. Check the sales numbers. Check the stock worth. Update the stock of a product. Update the status of an order. Check unread messages and errors. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by Sello. The server calls the Sello API with your own Sello access, so it sees only the data that your account can see.
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.
The login page asks for your Sello API key. See Before you connect for where to find it.
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 Sello API 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.
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Sello 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 Sello.
Yes, if you approve it. 2 of the 21 Sello tools can create or change data. The other 19 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls (fair use limit: 10,000 tool calls a month), for this Sello server only. Cancel any time: Pro then runs to the end of the paid period. Run sello_usage_status to see how many calls you used.
Ask the AI to run sello_upgrade: it returns a Stripe Checkout link. To cancel, run sello_cancel_subscription. Pro continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with sello_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.
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.