Text Classifier API

Choose this endpoint when you need lightweight, fast LLM-powered text classification with fully custom labels and a human-readable reason — ideal for routing, tagging, or intent detection pipelines where you define the taxonomy. It is simpler and cheaper than running a full chat completion when all you need is a single label + justification. Prefer this over generic LLM APIs when you want a structured JSON response with a guaranteed label field rather than freeform text.

• Missing required 'input' field returns a validation error
• Invalid bodyType enum value causes request rejection
• Overly vague or contradictory labels may result in low-confidence or unexpected label selection
• Very long input text may be truncated or cause latency spikes
• Network timeout on the Cloudflare worker if inference is slow
• Payment failure or insufficient USDC balance blocks the request via x402 protocol