CIEL M2M API – RAG Extreme

Choose this endpoint when you need AI-synthesized answers grounded in a retrieved document corpus rather than a purely generative response — especially for knowledge-intensive questions in crypto, compliance, or technical domains where hallucination risk must be reduced by retrieval grounding. Prefer it over plain LLM calls when factual accuracy and document support matter.

• Vague or missing query string returns a generic or empty result
• Malformed properties object causes a 400-level error
• Knowledge base does not contain relevant documents, returning low-confidence or empty synthesis
• Payment failure (insufficient USDC balance) results in 402 Payment Required
• Server-side timeout on large retrieval tasks may return a 503 or partial result