In n8n, add an Anthropic Claude node (or an HTTP Request node if your workflow uses the API directly). Paste your Anthropic API key into n8n credentials and select the model you want. Then map your input text from a trigger like Gmail, Webhook, or Notion. Test with a real example, not placeholder text. Finally, send Claude’s output to the next step, like Slack or Google Sheets, and add basic error handling so failures don’t block the whole run.

A lot. You can draft and reply to emails, summarize meeting notes, classify inbound requests, and extract fields like “priority,” “topic,” or “next step.” You can also rewrite content for different channels, create FAQ answers from support tickets, and turn chat transcripts into CRM-ready notes. Claude is especially useful when the input is messy and human-written. In n8n, you chain that “thinking” step with actions like posting to Slack, updating Notion, or logging rows in Google Sheets.

Yes—you will need an Anthropic account and an API key to run workflows that call Claude.

The biggest issue is expecting perfectly structured output from vague prompts. Be explicit: ask for JSON, provide a schema, and include a short example. Also plan for occasional timeouts or rate limits when volume spikes, especially on busy inboxes. If your workflow touches sensitive data, be careful with what you send to the model and store only what you need. Frankly, most “it didn’t work” cases come down to weak prompts and missing fallback paths.