Can I use n8n as a CLI?

Yes. KosmoKrator exposes a n8n CLI through kosmo integrations:call and the provider shortcut command. Commands can return JSON for scripts, CI, and coding agents.

Can I expose n8n through MCP?

Yes. The KosmoKrator MCP gateway can expose selected n8n tools to clients such as Claude Code, Cursor, Codex, and other MCP-compatible tools.

Where are n8n credentials stored?

n8n credentials are configured in KosmoKrator's local integration settings and reused by CLI, Lua, and MCP gateway surfaces.

Can I deny write access for n8n MCP tools?

Yes. Start the gateway with --write=deny for read-only clients, or use ask/allow only for trusted workspaces.

productivity

n8n MCP Integration for LangChain

Connect n8n to LangChain through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

7 functions 6 read 1 write API key auth

Submit n8n feedback View package source

Connect n8n to LangChain

Bridge LangChain agents to local KosmoKrator integration tools through MCP or headless CLI calls.

Use the MCP gateway when the agent should discover tools, or wrap kosmo integrations:call for fixed chains. The gateway is local, scoped to this integration, and starts with --write=deny so LangChain can inspect read-capable tools without receiving write access by default.

n8n MCP Config for LangChain

Keep the gateway scoped to the integration and operation class needed by the chain.

{
  "mcpServers": {
    "kosmokrator-n8n": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=n8n",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=n8n --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only n8n instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

n8n Tools Visible to LangChain

LangChain sees stable MCP tool names generated from the n8n integration catalog.

MCP tool	Source function	Type	Description
`integration__n8n__n8n_list_workflows`	`n8n.n8n_list_workflows`	Read	List n8n workflows. Supports pagination with cursor and limit parameters.
`integration__n8n__n8n_get_workflow`	`n8n.n8n_get_workflow`	Read	Get detailed information about a specific n8n workflow, including its nodes, connections, and settings.
`integration__n8n__n8n_create_workflow`	`n8n.n8n_create_workflow`	Write	Create a new n8n workflow. Requires a name. Optionally define nodes, connections, and settings.
`integration__n8n__n8n_list_executions`	`n8n.n8n_list_executions`	Read	List n8n workflow executions. Supports filtering by status and workflow ID, with pagination.
`integration__n8n__n8n_get_execution`	`n8n.n8n_get_execution`	Read	Get detailed information about a specific n8n workflow execution, including status, data, and node results.
`integration__n8n__n8n_list_credentials`	`n8n.n8n_list_credentials`	Read	List n8n credentials. Supports pagination with cursor and limit parameters.
`integration__n8n__n8n_get_current_user`	`n8n.n8n_get_current_user`	Read	Get the authenticated n8n user's profile information, including name, email, and role.

Related n8n Pages

n8n CLIUse direct JSON commands instead of MCP discovery. n8n MCPFull gateway reference and MCP tool names. KosmoKrator for LangChainClient-level gateway setup.