n8n MCP Server (Leonardsellem): Setup for Claude, Cursor and Other Apps

• Lists the workflows in your n8n, optionally only active or inactive

  Returns every workflow in your n8n with its name and whether it is switched on. You can filter to active or inactive ones.

  Try: “Which of my n8n workflows are currently active?”

  Network · list_workflows

• Shows one workflow's full details by ID

  Fetches a single workflow by its ID, including its nodes and connections, so the assistant can explain or edit it.

  Try: “Show me how the 'Weekly report' workflow is built.”

  Network · get_workflow

• Builds a new workflow from nodes and connections

  Creates a workflow in n8n from a name, a list of nodes and the links between them. It can switch the workflow on at creation and add tags.

  Try: “Create a workflow that posts a Slack message every Monday at 9am.”

  Write · create_workflow

• Changes an existing workflow's name, nodes or connections

  Reads the current workflow, then saves your changes to its name, nodes, connections or tags. The active flag is not changed here; the activate and deactivate tools do that.

  Try: “Rename the 'Weekly report' workflow and add a step that emails the result.”

  Write · update_workflow

• Deletes a workflow from n8n

  Removes the workflow with the given ID from your n8n. Your assistant can call it without a second prompt unless your app asks you to confirm each tool call.

  Try: “Delete the old 'Test import' workflow.”

  Delete · delete_workflow

• Switches a workflow on

  Turns a workflow on so its triggers start running, and returns its name and new state.

  Try: “Activate the 'Invoice reminder' workflow.”

  Write · activate_workflow

• Switches a workflow off

  Turns a workflow off so its triggers stop firing, and returns its name and new state.

  Try: “Pause the 'Invoice reminder' workflow.”

  Write · deactivate_workflow

• Lists past workflow runs, filterable by workflow and status

  Returns recent runs from n8n. You can filter by workflow, by result (success, error, waiting, canceled), set a limit, page through results and ask for summary counts.

  Try: “Which executions of 'Weekly report' failed this week?”

  Network · list_executions

• Shows what happened in one run

  Fetches the details of a single execution by ID, so the assistant can find where it failed.

  Try: “Why did execution 4812 fail?”

  Network · get_execution

• Deletes a run from n8n's history

  Removes one stored execution record from n8n by ID. The record and its logged data are gone afterwards.

  Try: “Delete execution 4812.”

  Delete · delete_execution

• Triggers a workflow through its webhook URL

  Calls a workflow's webhook at your n8n address under /webhook/ using the name you give, with optional data and headers. It needs the webhook username and password to be set, and the workflow then actually runs.

  Try: “Trigger the 'hello-world' webhook with the message 'test'.”

  Write · run_webhook

Watch out for

• It can delete workflows and run history

  delete_workflow and delete_execution remove items from n8n for good. Back up important workflows, and keep your app's per-tool approval on. github.com

• It can rewrite and switch on live workflows

  update_workflow, activate_workflow and create_workflow change what runs on your n8n, which can send emails or call other services. Review a change before activating it. github.com

• The API key reaches your whole n8n

  The key you paste in is not limited by this server to certain workflows. Use a dedicated key on a test or non-critical n8n if you can. github.com

• The README tool names are out of date

  The README lists names like workflow_list and execution_stop, but the published code registers list_workflows and no stop tool. Prompts in plain words work either way. github.com

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