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Welcome to the LLMGenerator API documentation. Our API provides programmatic access to the core features of LLMGenerator, allowing you to integrate llms.txt generation and management directly into your applications.

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Base URL

All API endpoints are relative to the following base URL:

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Authentication

The LLMGenerator API uses API keys to authenticate requests. You can create and manage your API keys in Settings → API Keys. All authenticated requests must include an Authorization header with your API key as a Bearer token.
Keep your API keys secure. Do not share them in publicly accessible areas such as GitHub, client-side code, etc.

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Generation Methods

The API supports two distinct generation methods: You can specify the method using the generationMethod parameter in the /generate endpoint. Free plan users can only use the simple method.

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Credit System

API usage is tracked through credits:
  • Simple generation: Base credit cost per URL processed
  • Enhanced generation: 2x credit multiplier for AI processing
  • Full text: Additional credits for including full page content
Check your balance using the /credits/balance endpoint.

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Rate Limiting

API requests are rate-limited based on your subscription plan. If you exceed the rate limit, you will receive a 429 Too Many Requests response. The response headers contain rate limit information:
  • X-RateLimit-Limit: Maximum requests per minute
  • X-RateLimit-Remaining: Requests remaining in current window
  • X-RateLimit-Reset: Time when the window resets (UTC epoch seconds)

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CORS Support

Public file endpoints (/file/:siteId) support CORS and can be accessed directly from browsers. These endpoints don’t require authentication.

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Errors

The API uses standard HTTP status codes: Error responses include a JSON body:

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Webhooks

For long-running operations, you can configure webhook URLs to receive notifications when jobs complete. Contact support to enable webhooks for your account.