payment-ready until 2026-08-20
Pay-per-call real-time crypto market-data API for autonomous agents and trading bots. Covers 16 assets with derivatives intelligence (funding rates, open interest, basis), liquidation cluster maps, options implied volatility, multi-source spot pricing, macro context, and ML price forecasts. No API keys required — x402 USDC micropayments on Base mainnet. Prices range $0.001-$0.10 per call.
Pay from $0.02 to $0.10 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
first settlement 2026-07-01 · $39.90 all-time · settled via coinbase
ASSESSMENT
updated 4h agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 100%
- uptime 24h
- 100%
- uptime 7d
- 100%
- uptime 30d
- 100%
- uptime 90d
- 100%
- response p95
- 607ms
- avg response
- 323ms
- total checks
- 2,736
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
compliance A (14/14)
14 of 14 x402 conformance checks pass. Full checklist below.
price $0.02 to $0.10 (p68 in Data)
- price (min)
- $0.02
- price (max)
- $0.10
- category percentile (min)
- p68 in Data
- category percentile (max)
- p77 in Data
- endpoints / prices
- 4 / 4
- model
- tiered
- stability
- 100%
risk clean
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
- domain age
- -
- registrar
- -
- hosting
- custom
- domain created
- ---
Identity facts, not a risk score.
traction $33.936 30d · 42 buyers
- volume 30d
- $33.936
- buyers 30d
- 42
- settlements 30d
- 2,300
- first settlement
- 2026-07-01
- last settlement
- 2026-08-13
- top buyer share
- 54% of 30d volume
- trend 7d vs 30d
- 2.45x the 30d daily rate
- networks
- eip155:8453
- volume all-time
- $39.90
- settlements all-time
- 2,691
- median settlement 30d
- $0.02
- max settlement 30d
- $0.10
- settled via
- coinbase ($33.94, 2,300 tx)
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is a concentration signal, not part of the ranking score.
WHAT IT DOES
ai-derivedNo AI synthesis has been produced for this service yet.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| GET | /api/v1/briefing | $0.10 | Base | USDC | header | |
| GET | /api/v1/forecast/btc | $0.05 | Base | USDC | header | |
| GET | /api/v1/gex/btc | $0.04 | Base | USDC | header | |
| GET | /api/v1/signals/btc | $0.02 | Base | USDC | header |
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /api/v1/briefing returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i 'https://kronossignals.com/api/v1/briefing'
// 402 response (captured by monitor) · 4 payloads · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x36038e1d712c5e39f35952164ec58ec2b96caee7",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://kronossignals.com/api/v1/signals/btc",
"tags": [
"crypto",
"derivatives",
"perpetuals",
"funding-rate",
"open-interest",
"signals",
"multi-asset",
"ai-agents",
"x402"
],
"mimeType": "application/json",
"description": "Real-time crypto derivatives signals for BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT-USD: perpetual futures funding rate (raw + annualized), next_funding_time, funding_interval_hours, open interest and 1h change, basis (perp vs index), funding-rate trend. Live data from Bybit/OKX via Kronos market_signals. Pay-per-call via x402.",
"serviceName": "Kronos Crypto Data & Forecasts"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"read": "Elevated positive funding (10.9% ann., trend rising); OI growing. Heuristic only.",
"as_of": "2026-07-02T10:00:00.000Z",
"asset": "BTC-USD",
"basis": 0.000186,
"inputs": {
"samples": 12,
"mark_price": 107500,
"volume_24h": 12000000,
"data_source": "bybit",
"index_price": 107480,
"funding_rate": 0.0001,
"open_interest": 85000,
"next_funding_time": "2026-07-02T16:00:00.000Z"
},
"samples": 12,
"available": true,
"disclaimer": "Heuristic signal. Not financial advice. Data lags up to 5 minutes.",
"mark_price": 107500,
"volume_24h": 12000000,
"data_source": "bybit",
"index_price": 107480,
"funding_rate": 0.0001,
"oi_change_1h": {
"abs": 320,
"pct": 0.3765
},
"cache_ttl_sec": null,
"funding_trend": "rising",
"open_interest": 85000,
"next_funding_time": "2026-07-02T16:00:00.000Z",
"funding_interval_hours": 8,
"funding_rate_annualized": 0.1095
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x36038e1d712c5e39f35952164ec58ec2b96caee7",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://kronossignals.com/api/v1/briefing",
"tags": [
"briefing",
"composite",
"forecast",
"macro",
"fear-greed",
"funding-extremes",
"multi-asset",
"vix",
"dxy",
"spx",
"btc",
"eth",
"sol",
"ai-agents",
"x402"
],
"mimeType": "application/json",
"description": "Composite market briefing: BTC/ETH/SOL ML forecasts (1h horizon), Crypto Fear & Greed Index, TradFi macro context (VIX/DXY/US 10Y yield/S&P 500/gold), and top funding-rate extremes (|z|≥2 screened across 16 perpetual markets) — all in one round-trip. Saves 4+ separate paid calls. Per-section available flags for graceful degradation. $0.10 USDC via x402.",
"serviceName": "Kronos Crypto Data & Forecasts"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"macro": {
"dxy": {
"value": 104.2,
"source": "stooq.com",
"unavailable": false
},
"spx": {
"value": 5488,
"source": "stooq.com",
"unavailable": false
},
"vix": {
"value": 16.8,
"source": "stooq.com",
"unavailable": false
},
"gold": {
"value": 2325,
"source": "stooq.com",
"unavailable": false
},
"available": true,
"us_10y_yield": {
"value": 4.31,
"source": "stooq.com",
"unavailable": false
}
},
"forecasts": {
"BTC": {
"horizon": "1h",
"available": true,
"direction": "up",
"range_low": 106300,
"range_high": 108700,
"probability": 0.67,
"expected_close": 107620
},
"ETH": {
"horizon": "1h",
"available": true,
"direction": "up",
"range_low": 3450,
"range_high": 3590,
"probability": 0.58,
"expected_close": 3520
},
"SOL": {
"horizon": "1h",
"available": true,
"direction": "down",
"range_low": 145,
"range_high": 152,
"probability": 0.44,
"expected_close": 148
}
},
"sentiment": {
"available": true,
"fear_greed": {
"value": 75,
"timestamp": "1751443200",
"value_classification": "Greed"
}
},
"disclaimer": "Composite briefing assembled from: Kronos-base ML model (forecasts), alternative.me (Fear & Greed), stooq.com / Yahoo Finance (macro), and Kronos market_signals / Bybit (funding extremes). Informational only, not financial advice.",
"usage_hint": "One-call composite briefing: BTC/ETH/SOL ML forecasts, Fear & Greed, macro (VIX/DXY/SPX/gold), top funding extremes.",
"generated_at": "2026-07-03T10:00:00.000Z",
"funding_extremes": {
"items": [
{
"rank": 1,
"asset": "BTC-USD",
"short": "BTC",
"stale": false,
"z_score": 2.8,
"captured_at": "2026-07-03T09:55:00.000Z",
"funding_rate": 0.003,
"classification": "extreme",
"data_age_seconds": 300,
"funding_rate_annualized": 3.285
}
],
"available": true,
"extremes_count": 1,
"no_extremes_message": null
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x36038e1d712c5e39f35952164ec58ec2b96caee7",
"amount": "40000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://kronossignals.com/api/v1/gex/btc",
"tags": [
"gex",
"gamma-exposure",
"max-pain",
"options",
"dealer-positioning",
"expiry",
"derivatives",
"crypto",
"btc",
"eth",
"deribit",
"greeks",
"gamma-flip",
"pin-risk",
"expected-move",
"ai-agents",
"x402"
],
"mimeType": "application/json",
"description": "Gamma Exposure (GEX) and max-pain options tool for BTC and ETH from the Deribit public API. Returns an aggregate GEX strike ladder (dealer-convention net gamma per strike), gamma flip level (zero-cumulative-GEX strike), spot regime above or below flip, max-pain strikes for upcoming weekly and monthly expiries, an expected-move cone (ATM-IV-derived 1-sigma, front expiry), and a heuristic pin-risk score. 15-minute in-memory cache. $0.04 USDC via x402.",
"serviceName": "Kronos Crypto Data & Forecasts"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"as_of": "2026-07-02T10:00:00.000Z",
"asset": "BTC-USD",
"max_pain": [
{
"dte": 2.1,
"label": "weekly",
"expiry": "4JUL26",
"max_pain_strike": 60000
}
],
"pin_risk": [
{
"note": "Heuristic [0-1]. NOT a forecast.",
"expiry": "4JUL26",
"pin_risk_score": 0.51,
"max_pain_strike": 60000
}
],
"available": true,
"gex_total": 50000000,
"gex_units": "USD per 1% spot move per strike",
"gex_ladder": [
{
"netGex": 12500000,
"putGex": -5500000,
"strike": 60000,
"callGex": 18000000
}
],
"data_source": "deribit",
"spot_regime": "above_flip",
"expected_move": {
"dte": 2.1,
"spot": 61200,
"lower": 60300,
"upper": 62100,
"atm_iv": 42.5,
"expiry": "4JUL26"
},
"gamma_flip_level": 58500,
"underlying_price": 61200
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x36038e1d712c5e39f35952164ec58ec2b96caee7",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://kronossignals.com/api/v1/forecast/btc",
"tags": [
"bitcoin",
"btc",
"crypto",
"price-forecast",
"price-prediction",
"machine-learning",
"trading",
"ai-agents",
"x402"
],
"mimeType": "application/json",
"description": "Real-time and ML-forecasted Bitcoin (BTC) price. Kronos deep-learning model: up-probability, expected close, price range, p10-p90 quantiles, forward volatility across 1h/4h/24h horizons. Crypto price prediction / price forecast API for AI agents and trading bots. Pay-per-call via x402 on Base USDC.",
"serviceName": "Kronos Crypto Data & Forecasts"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"horizon": "1h"
}
},
"output": {
"type": "json",
"example": {
"asset": "BTC-USD",
"model": "kronos-base-60path-t1-v2",
"price": {
"atr": 800,
"close": 107500
},
"cached": true,
"source": "Kronos-base (cached, 60-path MC)",
"horizon": "1h",
"forecast": {
"n_paths": 60,
"prob_up": 0.67,
"up_prob": 0.67,
"pred_low": 106100,
"pred_high": 108500,
"quantiles": {
"p10": 106300,
"p25": 107000,
"p50": 107620,
"p75": 108200,
"p90": 108700
},
"range_low": 106300,
"confidence": 0.67,
"range_high": 108700,
"horizon_bars": 1,
"expected_close": 107620.5,
"pred_volatility": 0.0079
},
"disclaimer": "Kronos-base ML forecast (60-path Monte-Carlo), cached; regenerated every ~20 min. Informational only, not financial advice.",
"generated_at": "2026-07-01T10:00:00.000Z",
"cache_age_seconds": 180
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"horizon": {
"enum": [
"1h",
"4h",
"24h"
],
"type": "string",
"default": "1h",
"description": "Forecast horizon: 1h = 1-hour candles, 4h = 4-hour candles, 24h = daily candles"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}
] OVER TIME
All charts use the 7d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/kronos-crypto-data-forecasts/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.
Median across 4 endpoints. Use the selector to isolate one.
checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression
Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.
COMPLIANCE
14/14 checks pass · grade Alast 402 captured 2026-07-13 · last up 2026-08-13
- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
- declares the current x402 version (2)
- EIP-712 domain parameters present on every EVM entry
- x402 v2 envelope delivered in the payment-required header
SITE PILLARS
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
recent checks (18) live · click to expand
EMBED THIS BADGE
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