Read marketplace orders and action results; set order ids and send accept or ship actions in Lengow. For marketplace sellers who manage orders from several marketplaces in Lengow. 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": {
"lengow": {
"url": "https://lengow.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"lengow": {
"type": "http",
"url": "https://lengow.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 marketplace orders by status or date. Without a date filter, the list covers the last 7 days.
lengow_list_orders lengow_list_marketplaces
Check the carrier fields that the marketplace requires. Then send a ship action with the tracking number and read the result.
Changes data · lengow_list_marketplaces lengow_create_order_action lengow_list_order_actions
Send an accept action for one order. Lengow runs it in the background, so read the action list to see the result.
Changes data · lengow_create_order_action lengow_list_order_actions
List the actions sent to marketplaces. Each entry shows whether it was processed, and names the error if it failed.
lengow_list_order_actions
Set your own order id on a Lengow order. Repeating the same call with the same values is safe.
Changes data · lengow_set_merchant_order_id
The login page asks for your Lengow access_token and Lengow secret.
In Lengow open Company settings → API and copy the access_token and the secret. Generating new keys there revokes the old ones. Your keys are used only to call your own Lengow account and are never shown to anyone.
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 Lengow access_token and Lengow secret. 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 Lengow connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
lengow_list_orders | read | List orders List marketplace orders of the account with their status, lines and customer delivery data. Without a date filter, Lengow returns only the last 7 days. Use it to find orders to ship or check. Lengow API: GET /v3.0/orders/. |
lengow_list_order_actions | read | List order actions List the actions sent to marketplaces (accept, ship, cancel and others) with their result. Use it after an action to see whether the marketplace processed it: processed=true and queued=false means success; errors names the failure. Lengow API: GET /v3.0/orders/actions/. |
lengow_list_marketplaces | read | List marketplaces List the connected marketplaces with their codes, order statuses, the actions each allows and the required fields of each action (for example the carriers for ship). Call it before lengow_create_order_action. Lengow API: GET /v3.0/marketplaces/. |
lengow_set_merchant_order_id | write | Set merchant order id Store your own internal order id on a Lengow order, so later imports can skip it. Safe to repeat with the same values. Lengow API: PATCH /v3.0/orders/moi/. |
lengow_create_order_action | write | Create an order action Send an accept or ship action for one order to its marketplace. Lengow runs it asynchronously and retries it up to 5 times: check the result with lengow_list_order_actions. Ship needs tracking_number (and carrier when the marketplace requires it: see lengow_list_marketplaces). Lengow API: POST /v3.0/orders/actions/. |
lengow_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. | |
lengow_request_feature | Request a missing feature Tell usefulapi that the user needs something the Lengow 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. | |
lengow_upgrade | Upgrade to Pro (unlimited*) Get Pro: unlimited tool calls (fair use limit: 10,000 a month) on Lengow (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. | |
lengow_cancel_subscription | Cancel the Pro subscription Cancel the caller's Lengow 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 lengow_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 Lengow server only. Subscribe with lengow_upgrade (it returns a Stripe Checkout link). Cancel any time with lengow_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running lengow_upgrade before then undoes the cancel. Or write to [email protected].
Find orders to ship. Ship an order with a tracking number. Accept an order on its marketplace. Check whether a marketplace action worked. Store your internal order id on a Lengow order. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by Lengow. The server calls the Lengow API with your own Lengow 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 Lengow access_token and Lengow secret. See Before you connect for where to find them.
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 Lengow access_token and Lengow secret. 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 Lengow 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 Lengow.
Yes, if you approve it. 2 of the 5 Lengow tools can create or change data. The other 3 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 Lengow server only. Cancel any time: Pro then runs to the end of the paid period. Run lengow_usage_status to see how many calls you used.
Ask the AI to run lengow_upgrade: it returns a Stripe Checkout link. To cancel, run lengow_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 lengow_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.