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n8n is a workflow automation platform with AI nodes built in. Opper ships a community node, so Opper models appear as a native chat-model sub-node rather than a generic HTTP request. Requirements: n8n 1.94.0 or later, Node.js 20.15+.

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Setup

1

Install the community node

Settings → Community Nodes → Install, then enter:
2

Add the credential

Create an Opper API credential:The credential test validates connectivity through Opper’s OpenAI-compatible GET /models endpoint.
3

Use it in a workflow

Add an AI Agent node (or Basic LLM Chain, or anything else that accepts a language-model connection) and attach Opper Chat Model as its model sub-node.

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Choosing a model

The Opper Chat Model node lists the catalog fetched with your credential, filtered by your model access rules. Agent nodes need tool calling — pick a model the catalog marks with the tools capability.

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Attributing usage per workflow

n8n instances usually run many workflows against one credential. Tag the traffic so you can tell them apart in Opper analytics — see Tags and usage attribution.

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Troubleshooting

n8n loads community nodes at startup. Restart the instance after installing.
Self-hosted n8n gates community nodes behind an environment flag, and some managed plans don’t allow them at all. Check your instance settings.
It calls GET /models. A failure usually means the key is wrong, or the base URL has an extra path segment — it should be exactly https://api.opper.ai/v3/compat.

Tags and usage attribution

Split usage per workflow or tenant.

All integrations

Every app that runs on Opper.