N8n Workflow BuilderSAFE
AI assistant integration for n8n workflow automation through Model Context Protocol (MCP). Connect Claude Desktop, ChatGPT, and other AI assistants to n8n for natural language workflow management.
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
The ultimate AI assistant integration for n8n workflow automation - Connect Claude Desktop, ChatGPT, and other AI assistants directly to your n8n instance for seamless workflow management, creation, and execution through the Model Context Protocol (MCP).
0deebedc2b6eOBSERVED · 2026-09-29Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.
claude mcp add n8n-workflow-builder --env N8N_API_KEY=${N8N_API_KEY} -- npx -y @makafeli/[email protected]{
"mcpServers": {
"n8n-workflow-builder": {
"command": "npx",
"args": [
"-y",
"@makafeli/[email protected]"
],
"env": {
"N8N_API_KEY": "${N8N_API_KEY}"
}
}
}
}Exposed tools (35)
14 read · 14 write · 7 destructive. Blast radius: 7 tools can delete or overwrite — an agent that can be talked into calling a tool can be talked into calling this one.
| Tool | Risk | Description |
|---|---|---|
activate_workflow | read | Activate an n8n workflow |
add_node | write | Add a single node to an existing workflow |
connect_nodes | read | Connect two nodes in a workflow |
create_credential | write | Create a new credential for workflow authentication. Use get_credential_schema first to understand required fields for the credential type. |
create_tag | write | Create a new workflow tag for organization and categorization |
create_workflow | write | Create and configure n8n workflows programmatically |
create_workflow_and_activate | write | Create and activate an n8n workflow |
deactivate_workflow | read | Deactivate an n8n workflow |
delete_credential | destructive | Delete a credential by ID. This will remove the credential and make it unavailable for workflows. Use with caution as this action cannot be undone. |
delete_execution | destructive | Delete a workflow execution record from the n8n instance |
delete_tag | destructive | Remove unused tags from the system |
delete_workflow | destructive | Delete an n8n workflow |
disconnect_nodes | destructive | Remove a connection between two nodes |
download_workflow | write | Download a workflow and save it to a local JSON file (avoids dumping to chat) |
execute_workflow | write | Trigger immediate execution of a workflow by its ID. Starts the workflow manually regardless of its normal triggers (webhooks, schedules, etc.). Returns execution details including status, start time, and any immediate results or errors. |
generate_audit | read | Generate a comprehensive security audit report for the n8n instance |
get_credential_schema | read | Get the schema for a specific credential type to understand what fields are required when creating credentials. |
get_execution | read | Get detailed information about a specific workflow execution |
get_tag | read | Retrieve individual tag details by ID |
get_workflow | read | Get an n8n workflow |
get_workflow_tags | read | Get all tags associated with a specific workflow |
id | read | The ID of the workflow |
list_executions | read | List workflow executions with filtering and pagination support |
list_tags | read | List all workflow tags with pagination support |
list_workflows | read | List all workflows from your n8n instance. Returns a comprehensive list of all workflows with their IDs, names, status (active/inactive), creation dates, and basic metadata. Perfect for getting an overview of your automation landscape. |
list_workflows_full | read | List all workflows with complete data including nodes and connections. Warning: high token usage. |
remove_node | destructive | Remove a node from a workflow (also removes its connections) |
update_node | write | Update a specific node |
update_node_from_file | write | Update a node parameter by reading value from a file (ideal for long SQL queries, scripts, templates) |
update_tag | write | Modify tag names for better organization |
update_workflow | write | Update an existing n8n workflow |
update_workflow_name | write | Rename a workflow without sending the full workflow object |
update_workflow_settings | write | Update workflow settings without sending full workflow |
update_workflow_tags | destructive | Assign or remove tags from workflows |
upload_workflow | write | Upload a workflow from a local JSON file to n8n (creates new workflow) |
Trust audit
SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | PASS |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | WARN |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- declared (1 observation(s))
- Network
- declared (5 observation(s))
- Shell
- declared (1 observation(s))
- Dependencies
- not all pinned
- Secrets in source
- none-found
Findings (5)
delete_credential, delete_execution, delete_tag, delete_workflow, disconnect_nodes, remove_node, update_workflow_tags
@modelcontextprotocol/sdk, axios, zod, @types/jest, @types/node, dotenv, jest, jest-junit
- You can revoke access anytime by disabling the API key
2. **Navigate to Access Tokens**: Profile → Access Tokens
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.0/install.sh | bash
Gates applied: no_behavioural_pass.
0deebedc2b6efull audit observations/trust-audit/mcp-server/makafeli__n8n-workflow-builder-1.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-09-29 | 0deebedc2b6e | SAFE | B | 89 | first audit |
Questions
What is the N8n Workflow Builder MCP server?
AI assistant integration for n8n workflow automation through Model Context Protocol (MCP). Connect Claude Desktop, ChatGPT, and other AI assistants to n8n for natural language workflow management.
What tools does N8n Workflow Builder expose?
35 in total: 14 read-only, 14 that write, and 7 that can delete or overwrite (delete_credential, delete_execution, delete_tag, delete_workflow, disconnect_nodes). Every one is listed on this page with its risk.
Is N8n Workflow Builder safe to connect to an agent?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B. Separately from the audit: 7 of its tools can destroy data, so scope the token you give it to what you actually need.
What credentials does N8n Workflow Builder need?
It reads N8N_API_KEY from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.
How does N8n Workflow Builder run?
It speaks stdio, so it runs as a local process your client starts. It is published on npm as @makafeli/n8n-workflow-builder at 0.11.0.
How current is this page?
The grade is for one exact copy of the source (0deebedc2b6e), read on 2026-09-29. The repository is watched and re-audited when it changes.