Get a pre-reasoned market briefing with trend signals, confidence scores, regime classification, and causal narratives for the requested domain (Bitcoin, macro, cross-asset, FX). Includes crypto, macro financial data, and cross-asset correlations (indices, bonds, volatility as BTC relationship signals). Output is decision-ready — designed to be consumed directly by reasoning agents, not parsed for individual values. Briefings are tier-gated: Free (btc.quick-check, btc.context, macro.snapshot, cross.correlations, btc.pulse, btc.grid-stress), Basic (btc.momentum, macro.liquidity, btc.on-chain, cross.breadth, btc.miner-survival, btc.etf-flows, macro.auctions, cross.delta), Pro (btc.full, btc.factors, cross.regime, fx.liquidity, btc.energy, btc.treasury, macro.rates, cross.industrial-regime, cross.inflation-regime, cross.full). Requires API key authentication via Authorization header.