0n3
MCP servers · n8n · connector · GPT action

Connect ChatGPT to n8n

One line gives ChatGPT your n8n account as tools: 14 endpoints, workflows, executions, credentials, called with your own connection. No key in the prompt, a receipt for every call, revoke ChatGPT's access alone any time.

Get the line for ChatGPTConnect n8n first

Three steps

  1. Create a free 0n3 account and connect n8n. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into ChatGPT. A custom connector in Developer mode, or an Action on a custom GPT from the OpenAPI spec.
  3. Ask ChatGPT: whoami. Then: "List workflows in n8n".
Custom connector (needs Developer mode)
  1. Settings → Connectors (or Apps) → Advanced → Developer mode on
  2. Create → name 0n3 · MCP server URL https://0n3.app/mcp · Authentication: OAuth
  3. Finish the sign-in with your 0n account
  4. Enable the connector in a chat and ask: "whoami"

ChatGPT connectors cannot send a static header, so 0n3 signs you in through its OAuth door (dynamic client registration is on).

The line above carries a placeholder; 0n3.app/install mints a real key named for ChatGPT and fills it in.

What ChatGPT can then do in n8n

Workflows · Create and manage automation workflows8
List workflowsGET /workflows
Get a workflowGET /workflows/{workflowId}
Create a workflowPOST /workflows
Update a workflowPUT /workflows/{workflowId}
Delete a workflowDELETE /workflows/{workflowId}
Activate workflowPATCH /workflows/{workflowId}
Deactivate workflowPATCH /workflows/{workflowId}
Run a workflowPOST /workflows/{workflowId}/run
Executions · View and manage workflow execution history3
List executionsGET /executions
Get an executionGET /executions/{executionId}
Delete an executionDELETE /executions/{executionId}
Credentials · Manage integration credentials3
List credentialsGET /credentials
Create a credentialPOST /credentials
Delete a credentialDELETE /credentials/{credentialId}
Trigger workflow · Trigger a workflow via webhook or API0
Trigger a workflow via webhook or API

n8n in other AI clients

Claude Code + n8nMCP server + skillClaude (desktop & claude.ai) + n8nconnectorCodex CLI + n8nMCP serverGemini CLI + n8nMCP serverCursor + n8nMCP serverVS Code (Copilot) + n8nMCP serverWindsurf + n8nMCP server

ChatGPT with other apps

Hostinger363 endpointsTelegram132 endpointsPipedrive95 endpointsResend67 endpointsSquare57 endpointsLinkedIn50 endpointsSlack45 endpointsFigma32 endpointsCloudConvert32 endpointseBay25 endpointsQuickBooks21 endpointsCloudflare21 endpoints