kronos-x402.vercel.app
https://kronos-x402.vercel.appCross-venue funding arbitrage signal from real-time 8h-equivalent funding rates on Binance, OKX, Bybit, KuCoin, Bitget and Hyperliquid. Returns the gross and net-of-fees spread between the best short venue and best long venue (gross_spread_bps, net_spread_bps after a 20 bps round-trip fee estimate), spread_8h_normalized, venues_count, per-venue rates with funding_interval_hours, annualized_pct,...
Paid verification
How it worksNo sponsored paid call yet.
Pay this endpoint once from your own wallet (Base USDC, up to $1.00) and we call it and record what came back. Your wallet pays the listed recipient directly; Agent Tools never holds funds. Sponsored checks prove delivery; they do not count as demand.
Quality grade
How grading works- ✓ Answers a real HTTP 402 challenge
- ✓ Publishes a /.well-known/x402 descriptor
- ✓ Payment address on record
- ✓ Settlement network declared
- ✓ Price declared
x402 readiness
Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here A, 81.0/100), which weighs availability, payability and on-chain demand. How the two differ
| Valid payment requirements | 10/10 | Payment requirements carry a payee, a mainnet network and a price. |
| Live 402 challenge | 20/25 | Endpoint reachable; its 402 challenge was seen earlier (229 ms). |
| x402 version | n/a | x402 version not observed yet. |
| Signed descriptor | n/a | No x402 standard defines a signed descriptor. |
| Uptime (30 days) | 15/15 | 32/32 probes succeeded over 30 days (100%). |
| Resource declaration | 10/10 | Declares 33 paid resource(s). |
| Verified identity | 5/10 | Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control. |
| Freshness + modern flags | 1/5 | not seen in a source for over 30 days; declares x402. |
| Security declaration | n/a | Payment is the access control for an x402 resource. |
Compared with peers
Against 10,082 reachable x402 APIs in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.
- Readiness
- Higher than 60% of peers
- This listing 81 · peer median 78
- Latency
- Faster than 45% of peers
- This listing 229 ms · peer median 205 ms
Where it loses the most points, and how to win them back
- Live 402 challenge −5
— Answer the paid path with a valid 402 challenge.
Now: Endpoint reachable; its 402 challenge was seen earlier (229 ms).
- Verified identity −5
— Claim the listing and prove control of its domain.
Now: Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
- Freshness + modern flags −4
— Keep the listing current in the registry or source it comes from.
Now: not seen in a source for over 30 days; declares x402.
Paid endpoints
33 resource(s) advertised by this origin. Each price below is that resource's own x402 price; the headline price is the range across them.
https://kronos-x402.vercel.app/api/v1/liquidations/{asset}
Forward liquidation cluster map + recent OKX prints. Estimated liq price levels for 5x/10x/25x/50x leverage bands from OI + mark price. Includes squeeze_bias label. Honest model disclaimers. All 17 assets.
https://kronos-x402.vercel.app/api/v1/alerts/{asset}
Market-regime alerts (squeeze, breakout, funding_extreme, oi_surge) in the last 2h, plus live derived funding + OI state. All 17 assets.
https://kronos-x402.vercel.app/api/v1/signals/{asset}
Perpetual swap derivatives intelligence for all 17 assets. Returns funding_rate, funding_rate_annualized, mark/index price, basis, OI, OI 1h change, funding trend, plain-language read.
https://kronos-x402.vercel.app/api/v1/funding-extremes
Up to 17 perpetual futures markets ranked by absolute funding rate (markets_evaluated says how many answered). Identifies crowded positions and squeeze risk across the market.
https://kronos-x402.vercel.app/api/v1/funding-arb/{asset}
Cross-venue funding arbitrage signal: real-time 8h-equivalent funding rates queried from up to 6 exchanges (Binance/OKX/Bybit/KuCoin/Bitget/Hyperliquid); venues_count says how many answered. Returns gross_spread_bps, net_spread_bps (after 20 bps round-trip fee), annualized_pct, actionability label,
https://kronos-x402.vercel.app/api/v1/cex-premium/{asset}
Coinbase price premium vs composite median (OKX + Kraken + Binance). Positive = US/institutional demand bias. 30d z-score and 24h percentile from cex_premium_history. Coinbase-listed assets only (BTC/ETH/SOL/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/BCH/ATOM/NEAR).
https://kronos-x402.vercel.app/api/v1/gex/{asset}
Gamma Exposure (GEX) and max-pain options tool from Deribit. Aggregate GEX strike ladder (dealer-convention net gamma per strike), gamma flip level (zero-cumulative-GEX strike), spot regime above/below flip, max-pain strikes for upcoming weekly and nearest monthly expiries, expected-move cone (ATM-I
https://kronos-x402.vercel.app/api/v1/options-iv/{asset}
Implied volatility surface from Deribit (fallback OKX). ATM IV, IV rank/percentile, term structure (weekly/1m/3m), 25-delta skew (put minus call IV), 10-delta wing IVs, max-pain strike, vol regime, and the variance risk premium (ATM IV minus 30d realized vol from Binance closes). BTC and ETH only. 1
https://kronos-x402.vercel.app/api/v1/implied-prob/{asset}
Options-implied probability that BTC or ETH is above each of up to 25 prices at a target time, backed out of the Deribit option book (skew-inclusive call-spread digitals; total variance interpolated between expiries). The options market's fair value for prediction-market crypto threshold contracts (
https://kronos-x402.vercel.app/api/v1/snapshot/{asset}
Full asset bundle in one call: spot price + derivatives signals + regime alerts + ML forecast (BTC/ETH/SOL) + options IV summary (BTC/ETH) + liquidation squeeze bias + Coinbase premium. The 'grab everything' entry call. All 16 assets.
https://kronos-x402.vercel.app/api/v1/market-pulse
Material-change feed: pass the cursor from your last call and receive ONLY what changed since (funding sign/band, funding trend, open-interest regime, alert set, source stale/recovered) for up to 5 assets. Returns an explicit no-change packet, per-asset freshness, and a next-poll time derived from t
https://kronos-x402.vercel.app/api/v1/scan
Market-wide screener across all 17 assets in one call. Per-asset: funding rate, annualized rate, OI 1h change, basis, funding trend, funding_extreme flag, regime event count. Optional ?assets=btc,eth subset.
https://kronos-x402.vercel.app/api/v1/overview
Market-wide derivatives snapshot for all 17 assets: funding rate, OI, mark price, 24h volume in one call. Replaces 17 separate signals calls.
https://kronos-x402.vercel.app/api/v1/digest/{asset}
Structured market digest: deterministic thesis from live signals (funding, basis, regime, 30d vol, Fear & Greed, VIX, ML forecast). Per-driver interpretations and honest caveats. No LLM. All 16 assets.
https://kronos-x402.vercel.app/api/v1/briefing
Composite briefing: BTC/ETH/SOL ML forecasts (1h), Crypto Fear & Greed Index, TradFi macro (VIX/DXY/US10Y/SPX/gold), and top funding-rate extremes (|z|≥2 across up to 17 markets; funding_extremes.markets_evaluated says how many answered) in one round-trip. Per-section available flags for graceful de
https://kronos-x402.vercel.app/api/v1/trade-preflight
Pre-trade context pack for one asset in one call: derivatives state, recent liquidation prints, implied-volatility surface (BTC/ETH), and active regime alerts. Replaces four separate paid calls. Each component independently marked available/unavailable/stale and never flattened into a neutral value.
https://kronos-x402.vercel.app/api/v1/macro
TradFi macro context: VIX, DXY (Dollar Index), US 10-Year yield, S&P 500 (SPX), gold. Sources: stooq.com + Yahoo Finance. 15-min cache. BTC-SPX and BTC-DXY 30d Pearson correlations computed when source data is available (null on upstream failure — never fabricated).
https://kronos-x402.vercel.app/api/v1/stablecoins
Stablecoin market cap, top stablecoins by market cap, 7-day and 30-day flows (mint/burn) sourced from DeFiLlama. Refreshed hourly; as_of_age_seconds gives the age of the data and stale turns true after 2 hours. Returns total market cap, per-coin dominance %, net capital flows, and plain-language int
https://kronos-x402.vercel.app/api/v1/unlocks
Upcoming token unlock events for a curated set of major tokens: next scheduled cliff/linear unlock per protocol, tokens released, USD value at the current price, % of circulating supply, and the largest unlock within 7 days. DeFiLlama emissions + coins.llama.fi prices, refreshed hourly. Never fabric
https://kronos-x402.vercel.app/api/v1/ohlc/{asset}
Consolidated OHLC candles for 16 assets: Binance (primary) + Coinbase (secondary) per candle, with VWAP, dollar volume, body/wick % and doji flags, plus gap and volume-anomaly flags. Accepts ?interval=1h|4h|1d (default 1h) and ?limit=1-200 (default 50).
https://kronos-x402.vercel.app/api/v1/volatility/{asset}
7-day, 30-day and 90-day annualized realized volatility for 16 assets from closed Binance daily candles: close-to-close, Parkinson and Garman-Klass estimators, annualized by sqrt(252), with percentile context and a vol-regime label.
https://kronos-x402.vercel.app/api/v1/fear-greed
Crypto Fear & Greed Index (0-100) from alternative.me with value_classification (Extreme Fear/Fear/Neutral/Greed/Extreme Greed).
https://kronos-x402.vercel.app/api/v1/price/{asset}
Volume-weighted median spot price from Binance, Coinbase, Kraken, OKX with 1% outlier rejection, cross-exchange spread %, and confidence grading. All 16 assets.
https://kronos-x402.vercel.app/api/v1/forecast/{asset}
Premium add-on: ML directional price forecast (1h/4h/24h) for BTC/ETH/SOL. Returns up_prob, expected_close, range_low/high, p10-p90 quantiles, pred_volatility, confidence, model version.
https://kronos-x402.vercel.app/api/v1/forecast-path/{asset}
3-horizon quantile fan for BTC/ETH/SOL: p10/p25/p50/p75/p90 quantiles, expected close and forward volatility at 1h, 4h and 24h horizons, from 60-path Kronos-base Monte-Carlo runs refreshed every 20 min. Discrete-horizon distributions, no interpolation.
https://kronos-x402.vercel.app/api/v1/target-prob/{asset}
Empirical P(close above/below your target) at 1h, 4h or 24h for BTC/ETH/SOL, computed directly from the 60 terminal prices of each cached Kronos-base Monte-Carlo run. Resolution ~1/60 ≈ 1.7 percentage points — an empirical sample frequency, not a market-implied probability.
https://kronos-x402.vercel.app/api/v1/forward-vol/{asset}
Model-predicted forward volatility for BTC/ETH/SOL at 1h, 4h and 24h horizons, from Kronos-base 60-path Monte-Carlo dispersion, refreshed every 20 min, alongside a realized-volatility comparison (Binance daily OHLC, close-to-close/Parkinson/Garman-Klass).
https://kronos-x402.vercel.app/api/v1/forecast-ledger
Paginated list of resolved forecasts with actual outcomes. Per-row: original ML prediction vs real result. Hit rate uses cache-source rows (matching /api/stats). Filterable by asset, horizon, date range, source.
https://kronos-x402.vercel.app/api/v1/forecast/doge
DOGE-USD directional forecast (1h/4h/24h). Kronos-base ML model (60-path Monte-Carlo, run hourly; composite heuristic when no recent run exists) — graduated from composite 2026-07-10. Per-asset served accuracy is published live at /api/stats (beta_accuracy.per_asset). Response includes model_type an
https://kronos-x402.vercel.app/api/v1/forecast/xrp
XRP-USD composite directional forecast (1h/4h/24h). Composite model (EMA/RSI/MACD/ATR off Binance klines). It has shown no directional edge; check the live per-asset figure at /api/stats (beta_accuracy.per_asset, free) before buying. Response includes model_type:composite and accuracy_note.
https://kronos-x402.vercel.app/api/v1/forecast/bnb
BNB-USD directional forecast (1h/4h/24h). Kronos-base ML model (60-path Monte-Carlo, run hourly; composite heuristic when no recent run exists) — graduated from composite 2026-07-10. Per-asset served accuracy is published live at /api/stats (beta_accuracy.per_asset). Response includes model_type and
https://kronos-x402.vercel.app/api/v1/forecast/near
NEAR-USD directional forecast (1h/4h/24h). Kronos-base ML model (60-path Monte-Carlo, run hourly; composite heuristic when no recent run exists). Per-asset served accuracy is published live at /api/stats (beta_accuracy.per_asset). Response includes model_type and accuracy_note.
https://kronos-x402.vercel.app/api/v1/forecast/ada
ADA-USD directional forecast (1h/4h/24h). Kronos-base ML model (60-path Monte-Carlo, run hourly; composite heuristic when no recent run exists). Served accuracy is published live at /api/v1/forecast-ledger and /api/stats. Response includes model_type and accuracy_note.
How to call
curl -sS -i -X GET https://kronos-x402.vercel.app # expect HTTP 402 Payment Required (about 0.02 USDC/call)
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