The flow
Starts it 3Model 7Logic 1Service 3
The steps in the order they run, from what starts it.
- 1OpenAI Chat ModelLm Chat Open AiModel
- 2MCP ClientMcp Client ToolModel
- 3Simple MemoryMemory Buffer WindowModel
- 4Google BigQuery GetColumnsGoogle Big Query ToolService
- 5Google BigQuery Get Table listGoogle Big Query ToolService
- 6OpenAI Chat Model1Lm Chat Open AiModel
- 7Google BigQuery SQL QueryTool WorkflowModel
- 8Google BigQuery SQLQuery TriggerExecute Workflow triggerStarts it
- 9When chat message receivedChat triggerStarts it
- 10AI AgentAgentModel
- 11MCP Server TriggerMcp triggerStarts it
- 12Verify BigQuery Project & DatasetGuardrailsModel
- 13Execute a SQL queryGoogle Big QueryService
- 14Set Guardail Failed MessageSetLogic
How it's built
- Starts on
- Someone opening a chat with it
- Steps
- 14
- Size
- Medium: a working afternoon
- Connects to
- Nothing by connector; it calls services over plain HTTP
- Model
- OpenAI
- Retrieval
- Answers are drawn from documents you supply, not from the model alone
Questions
What does it need to run?
An n8n account, and a key for OpenAI. You connect your own accounts after importing it; none are included.
What starts it?
It starts on someone opening a chat with it.
Does it use AI?
Yes. It calls OpenAI. Its answers draw on documents you give it, not on the model alone. Model calls are billed by the provider, not by n8n.
How long does it take to set up?
Plan an afternoon. 14 steps is enough that you should read each one before running it.
How do I import it?
Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.
Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 14 steps before you point it at anything that matters.