Function generateMetadata

generateMetadata(
    systemPrompt: string,
    userPrompt: string,
    model: string,
    fallbackModels?: string[],
): Promise<GeneratedMetadata>
Sends a chat completion request to OpenRouter and parses the response into a typed GeneratedMetadata object with title, description, and tags fields.
Parameters
- systemPrompt: string
  Instructions for the AI (platform limits, format, etc.)
- userPrompt: string
  The user-facing content (filename, context)
- model: string
  OpenRouter model identifier (e.g. "openai/gpt-4o")
- OptionalfallbackModels: string[]
  Optional fallback model IDs appended after model. When provided, OpenRouter may attempt models in this order: primary model first, then each entry in fallbackModels.
Returns Promise<GeneratedMetadata>
Throws
Error if the API key is missing, the request fails, or the response is malformed / missing required fields.
- Defined in lib/ai/openrouter.ts:247