x402-service Grounded Answer with Live Web Search

Choose this endpoint when you need a factual, up-to-date answer grounded in live web sources rather than an LLM's static training data. It is especially valuable for time-sensitive questions, recent events, or any query where source citations are needed to validate claims. Prefer this over a plain LLM call when recency and verifiability matter, and over a raw URL fetch when you want synthesized, summarized answers rather than raw page content.

• Question exceeds 2000 characters — request rejected with validation error
• max_turns out of range (below 1 or above 4) — request rejected
• Web search returns no relevant results — answer may be incomplete or indicate low confidence
• Payment not included or insufficient USDC — 402 Payment Required response
• Rate limiting or upstream search provider unavailability — 503 or timeout error