n8n setup
n8n is a workflow automation tool with AI agent nodes. Its OpenAI credential accepts a custom base URL, so Claudech models work in any OpenAI chat node.
Before you start#
- A Claudech API key from API keys. API access unlocks after your first purchase.
1. Create the credential#
In Credentials → Add credential → OpenAI, fill in:
| Field | Value |
|---|---|
| API Key | your sk-... key |
| Base URL | https://api.claudech.com/v1 |
Save. Name it "Claudech" so it is easy to find.
2. Use it in a workflow#
- Add an AI Agent node (or a Basic LLM Chain) and attach an OpenAI Chat Model sub-node.
- Select the Claudech credential.
- For Model, choose By ID and enter
claude-opus-5-5(or any Claudech model id).
Tool use in AI Agent nodes works because every Claudech model supports tool calling.
Troubleshooting#
| Symptom | Fix |
|---|---|
| Model list is empty or shows OpenAI names | Choose the model By ID instead of from the list |
401 | Re-copy the key without spaces; check it is active under API keys |
402 insufficient_balance | Top up under Billing |
See all integrations for other tools. Claudech is an independent service and is not affiliated with the makers of n8n.