Workflow FunctionsWorkflow Functions
DeveloperHow to get an OpenRouter API key

How to get an OpenRouter API key

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Create an OpenRouter API key and connect it to Workflow Functions to write functions with Claude, GPT, Gemini and more.

OpenRouter gives you one key for models from many companies - Claude, GPT, Gemini, Llama, Mistral, DeepSeek and more. To use it with Write with AI, connect your own OpenRouter key.

Create the key

  1. Go to OpenRouter and sign in (or create an account): openrouter.ai.
  2. Add credits under Credits - generation is billed to your OpenRouter account.
  3. Open Keys - direct link: openrouter.ai/settings/keys - select Create key, name it (for example Workflow Functions) and copy the key. It starts with sk-or-.

Connect it

  1. In your Shopify admin, open Workflow Functions -> Developer -> Connections.
  2. Paste the key into the OpenRouter card and select Save key. The key is checked with OpenRouter before it is saved.
  3. Pick a default model from the list, or enter any OpenRouter model id, for example anthropic/claude-sonnet-5.

Your key is encrypted and used only for generation - it is never shown again and never runs inside your functions. Then open a function and select Write with AI.

The Connections tab with cards for Anthropic, OpenAI, Google Gemini and OpenRouter
Developer, Connections: one card per AI provider.

Generation is billed to your own OpenRouter account, not your Workflow Functions plan. See Generate functions with AI.