Is n8n Down?

If Prismix shows n8n as "Operational" but you're having issues:

• AI node credential error — n8n's AI nodes (OpenAI, Anthropic, Google Gemini) authenticate via stored credentials in your n8n instance. If a credential was created with an API key that has since been rotated or deleted, the node fails with a 401 at execution time. Navigate to Credentials, find the affected credential, and update the API key.
• OpenAI or Anthropic quota exceeded in workflow — n8n AI workflows can trigger hundreds of LLM calls per execution, rapidly hitting provider rate limits or monthly quotas. The node shows a 429 error and the workflow execution halts. Add a "Wait" node between AI calls or upgrade your LLM provider plan to increase limits.
• Webhook URL not reachable — Workflows triggered by webhooks require n8n's webhook server to be publicly accessible. On self-hosted instances behind a NAT or firewall, webhooks from third-party services silently fail. Verify your WEBHOOK_URL environment variable points to a publicly accessible URL, not localhost.
• Execution timeout on long AI chains — n8n has a default execution timeout (configurable via EXECUTIONS_TIMEOUT). Agentic workflows that chain multiple LLM calls can exceed this limit, causing the execution to terminate mid-run without an error message. Increase the timeout or split the workflow into sub-workflows triggered by Execute Workflow nodes.
• Binary data too large for workflow — n8n passes data between nodes in memory. Workflows processing large files (PDFs, images, audio for transcription) can exhaust the node process memory limit. Use the n8n Binary Data filesystem mode instead of memory mode, configured via N8N_DEFAULT_BINARY_DATA_MODE=filesystem.
• Memory exhaustion on self-hosted — Running n8n with many concurrent AI workflow executions on a small VM causes the Node.js process to run out of heap memory and crash. Increase the VM's RAM, set NODE_OPTIONS=--max-old-space-size=4096 in your environment, or enable queue mode to spread executions across multiple worker processes.