Asset snapshot — one coin, one call

Composite per Binance USDT pair (any pair, not only BTC/ETH/SOL): last daily close, 7/30/90/365-day returns, relative strength vs BTC and vs ETH on the same horizons with the measured base rate beside it (base_rate_context: the median altcoin loses against Bitcoin — a positive number is a description, not an edge), F6 trend state vs BTC, ATH/drawdown/days-since-ATH on the available exchange history (ath_scope declared), SMA200 distance, realized 30d volatility + ATR%, liquidity from our own daily Binance universe measurement (24h-volume rank today vs 30 days ago, 30d mean/median volume, band), tokenomics ratios from the gem screener (Pro+, CoinGecko ratios only), derivatives (BTC only so far) and a data_quality block (history span, candle count, missing days, coverage %, source/stitch, listing status incl. delisted, mechanical A/B/C grade with its rule in the payload). sources_used / sources_unavailable make the basis auditable. Descriptive, no signal. Same function as MCP arena_get_asset_snapshot. [Free tier]