Schema | n8n-workflows-mcp

n8n-workflows-mcp

Describes the environment variables required to run the server.

Name	Required	Description	Default
`N8N_API_KEY`	Yes	REST API key, sent as X-N8N-API-KEY on every discovery request.
`N8N_MCP_TAG`	No	Tag used as the discovery/execution boundary.	mcp
`N8N_BASE_URL`	Yes	Base URL of your n8n instance, no trailing slash. Must be a valid URL.
`N8N_WEBHOOK_AUTH_HEADER_NAME`	No	Name of a header sent on every webhook call. Requires N8N_WEBHOOK_AUTH_HEADER_VALUE if set.
`N8N_WEBHOOK_AUTH_HEADER_VALUE`	No	Value of that header. Requires N8N_WEBHOOK_AUTH_HEADER_NAME if set.

Features and capabilities supported by this server

Capability	Details
`tools`	{ "listChanged": true }

Functions exposed to the LLM to take actions

Name	Description
list_workflowsA	Lists n8n workflows opted in through the configured MCP tag. This tag is the governance boundary for workflows this agent may call.
get_workflow_schemaA	Returns the input schema and webhook details needed to call a given n8n workflow.
execute_workflowA	Executes a tagged n8n workflow through its webhook using the supplied JSON input. Delivery is at-least-once: a timeout or network error does not mean the workflow didn't run, so don't blindly retry on failure.
get_execution_statusA	Fetches the status of a previously triggered n8n execution by id.

Interactive templates invoked by user choice

Name	Description
No prompts

Contextual data attached and managed by the client

Name	Description
No resources

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