n8n AI Agent tool-node boundary

Evidence-backed facts

1. The n8n AI Agent node combines a model with connected tool sub-nodes inside an executable workflow. informative
2. The agent can select a connected tool and n8n executes the corresponding workflow node according to workflow configuration. informative
3. Node credentials, workflow publication, project roles, input data, retries, and confirmation for external writes remain separate controls. informative
4. A workflow definition or successful model response does not prove the workflow is active, a tool ran, a side effect succeeded, or production access exists. informative

Primary sources