{"note":"Free preview — send a POST request with {\"query\": \"your question\"} to get a live truncated preview. No payment required.","sample_query":"What are the latest developments in AI agent frameworks?","sample_result":{"summary":"AI agent frameworks are evolving rapidly in 2026. LangChain and CrewAI lead the open-source ecosystem, while x402 protocol enables native agent-to-service payments...","key_facts":["LangChain and CrewAI dominate open-source agent frameworks","x402 protocol enables agent-to-service payments without API keys"],"confidence_score":0.92},"pricing":{"research":"$0.02 USDC per query (Perplexity Sonar)","deep_research":"$0.10 USDC per query (Perplexity Sonar Pro)"},"try_it":"POST /preview with {\"query\": \"...\"} for a live preview, or POST /research with x402 payment for full results"}