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n8n is a workflow automation platform with a visual editor and AI blocks (AI Agent, OpenAI, chains). RuAPI connects through an OpenAI credential with a changed Base URL — after that, all AI nodes route to us.

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Prerequisites

1

RuAPI account and API key

Console → Tokens → create an sk-... key. The balance tops up in USDT — see Top-up.

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Create the credential

1

Add an OpenAI credential

In n8n: Credentials → New → OpenAI.
2

Fill the fields

FieldValue
API Keysk-your-key
Base URLhttps://www.ruapi.ai/v1  — with /v1
The Base URL field may sit under “Optional fields” (the gear) in the OpenAI credential form. Save the credential.

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Use it in a node

1

Add an AI node

Drop an OpenAI node or an AI Agent (with an OpenAI Chat Model) onto the canvas.
2

Pick the RuAPI credential

In the node’s Credentials field, select the credential you created.
3

Set the model

Enter the exact model ID from the pricing page. If your model isn’t in the dropdown, set the ID manually (“By ID” mode or an expression).

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Verify

Run the node with a simple prompt (“Hi, answer in one word”). A successful reply plus an entry in RuAPI Console → Logs means the wiring works.

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Troubleshooting

  • The API Key must be a RuAPI token (sk-...).
  • Check the credential’s Base URL is https://www.ruapi.ai/v1 with /v1.
Expand the optional/additional fields in the OpenAI credential form. The field is available in current self-hosted and cloud n8n versions.
The list shows OpenAI models. Enter the model ID manually — it must match RuAPI verbatim.