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n8n Workflow Builder
MCPOpen SourceMIT55.5
by spences10 • Workflow & Task Management
An MCP server that lets agents programmatically create, validate, manage, and execute n8n workflows via the n8n REST API.
Example Use Cases
- 1
Programmatically create or update n8n workflows with validated node types to avoid invalid node errors.
- 2
List, activate, deactivate, or delete workflows and manage workflow lifecycle without manual UI interaction.
- 3
Inspect workflow execution history and retrieve execution details for debugging or audit purposes.
Description
This Model Context Protocol (MCP) server provides tools to create, read, update, delete, activate, and deactivate n8n workflows and to list and inspect workflow executions. It validates workflow schemas and node types (offering suggestions for invalid nodes) to prevent runtime errors and includes detailed error messages and documentation. The server includes token-usage optimizations (verbosity control, object simplification, selective guide inclusion) to mitigate large JSON payloads typical of complex workflows.
Capabilities(11 total)
Tools (10)
list_available_nodes
Lists all available nodes in the n8n instance. Use this tool BEFORE creating or updating workflows to ensure you only use valid node types. This helps prevent errors caused by using node types that do not exist in the current n8n instance.
verbosity:stringcategory:string
list_workflows
Lists all workflows from n8n with their basic information including ID, name, status, creation date, and tags. Use this tool to get an overview of available workflows before performing operations on specific workflows. Results can be filtered by active status, tags, or name.
active:booleantags:stringname:stringverbosity:string
create_workflow
Creates a new workflow in n8n with specified nodes and connections. Note that only workflows with automatic trigger nodes (schedule, webhook, etc.) can be activated - workflows with only manual triggers cannot be activated. Returns the created workflow with its assigned ID.
workflow:object*activate:boolean
get_workflow
Retrieves complete details of a specific workflow by its ID, including all nodes, connections, settings, and metadata. Use this tool when you need to examine a workflow's structure before updating it or to understand how it works.
id:string*verbosity:string
update_workflow
Updates an existing workflow with new configuration. Typically used after retrieving a workflow with get_workflow, modifying its structure, and then saving the changes. The entire workflow structure must be provided, not just the parts being changed.
id:string*workflow:object*
Resources (1)
n8n Workflows
List of all workflows in n8n
URI: n8n://workflowsMIME: application/json
Quick Actions
Security
Scanned 2 month(s) agoRisk Level
MINIMAL
Read-only data retrieval, no side effects
Trust Score
B68/100
12/17 checks passed
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Quick Stats
Service TypeMCP
Pricing ModelFree
Capabilities10 Tools / 0 Prompts / 1 Resources
Ownerspences10
CategoryWorkflow & Task Management
DependenciesStandalone
Tags
WorkflowAutomationLifecycleExecution HistoryValidation