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n8n

n8n is a self-hostable workflow automation platform. Its OpenAI node and generic HTTP Request node both connect to Routerly out of the box.

Install​

Run n8n via Docker:

docker run -it --rm -p 5678:5678 n8nio/n8n

Or follow the full n8n installation guide.

Configure​

Option A — OpenAI node (recommended)​

  1. In n8n, go to Credentials → New → OpenAI API.
  2. Set:
    • API Key → sk-rt-YOUR_PROJECT_TOKEN
    • Base URL → http://localhost:3000/v1
  3. Save the credential with a recognisable name (e.g. Routerly).
  4. Add an OpenAI node to your workflow and select the new credential.

Option B — HTTP Request node​

For full control over the request body:

  1. Add an HTTP Request node.
  2. Set Method to POST and URL to http://localhost:3000/v1/chat/completions.
  3. Add a header: Authorization: Bearer sk-rt-YOUR_PROJECT_TOKEN.
  4. Use JSON Body:
{
  "model": "gpt-5-mini",
  "messages": [
    { "role": "user", "content": "{{ $json.prompt }}" }
  ]
}

Usage​

Connect the Routerly credential to any OpenAI node in your workflows. Cost data for each call is visible in the Routerly dashboard under Usage.