{"endpoint":"/api/blah/rapport","method":"POST","description":"Real-time relationship health scoring — trust, warmth, engagement trajectory, rapport breaks, and repair suggestions","price":"$0.25 via x402 (USDC on Base or Solana)","product":"BLAH (Be Like A Human)","modes":{"personalized":"Include kyh_profile for personality-calibrated rapport baselines (Mode 1)","contextual":"Without kyh_profile, uses general rapport benchmarks (Mode 2)"},"input":{"history":"Conversation history array with role/text (required, min 2 turns)","domain":"Optional domain/industry context","relationship_type":"Optional: new | established | professional | support | sales","kyh_profile":"Optional KYH personality data"},"output":"Rapport score + trend + trust/engagement/warmth levels + signals + breaks + repair suggestions + trajectory summary"}