{"uid":"cap_QoRnCET2jJAgOj_fUeO49","slug":"kronos-signals-vwm-spot-price-api-ac57d9ab","name":"Kronos Signals VWM Spot Price API","description":"Multi-source volume-weighted median (VWM) spot price for 16 crypto assets (BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT). Aggregates Binance, Coinbase, Kraken, and OKX in parallel (2 s timeout per source). Includes 1% outlier rejection, cross-exchange spread %, confidence grading (high/medium/low), and per-source USD volume weights. Kaiko-style reference pricing — $0.02/call.","url":"https://kronossignals.com/api/v1/price/btc","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"as_of":"2026-07-02T10:00:00.000Z","asset":"BTC-USD","price":107500,"sources":[{"price":107510,"volume":1200000000,"exchange":"binance","included":true,"vol_weight":0.45},{"price":107490,"volume":800000000,"exchange":"coinbase","included":true,"vol_weight":0.3},{"price":107500,"volume":400000000,"exchange":"kraken","included":true,"vol_weight":0.15},{"price":107480,"volume":270000000,"exchange":"okx","included":true,"vol_weight":0.1}],"confidence":"high","disclaimer":"Volume-weighted median price from up to 4 exchanges. Informational only, not financial advice.","data_age_seconds":0,"outliers_rejected":0,"price_simple_median":107480,"cross_exchange_spread_pct":0.08}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_FHDy4l3Vo7y_Tms-C5fdO","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a volume-weighted median spot price for a given crypto asset, aggregated from Binance, Coinbase, Kraken, and OKX with outlier rejection and confidence grading.","exampleAgentPrompt":"What's the volume-weighted median spot price for Bitcoin right now, including the confidence grade and cross-exchange spread across Binance, Coinbase, Kraken, and OKX?","exampleUseCases":[{"title":"Risk management trade sizing check","prompt":"Before I execute this large SOL position, can you grab me a multi-source reference price for Solana with the confidence grade and spread? I want to make sure the price I'm seeing on my exchange isn't an outlier before I size in."},{"title":"Cross-exchange arbitrage opportunity detection","prompt":"Check the current volume-weighted median price for ETH across Binance, Coinbase, Kraken, and OKX and tell me the cross-exchange spread percentage — I'm trying to spot any arbitrage windows right now."},{"title":"Portfolio fair value snapshot","prompt":"I need a clean fair-value benchmark for BTC, ETH, and BNB right now — pull the aggregated consensus price for each with confidence grades so I can mark my portfolio at a manipulation-resistant reference price."}],"resultDescription":"Returns a volume-weighted median (VWM) USD spot price for the requested crypto asset, aggregated from up to four exchanges (Binance, Coinbase, Kraken, OKX) with a 2-second timeout per source. Response includes: the VWM price, cross-exchange spread percentage, a confidence grade (high/medium/low), per-source USD volume weights used in the calculation, and notes on any outliers rejected via the 1% outlier filter.","failureModes":["Insufficient sources available (fewer than 2 exchanges respond within 2s timeout) — may return low confidence or error","Unsupported asset ticker — returns 404 or error if asset not in the 16 supported list","All source exchanges timeout — no price returned","Payment not processed (x402) — 402 response requiring USDC payment","Rate limiting or network errors from upstream exchanges causing degraded confidence"],"whenToPreferThis":"Prefer this endpoint when you need a robust, manipulation-resistant reference price for a major crypto asset that accounts for exchange-specific volume and rejects outliers. Ideal as a Kaiko-style fair-value benchmark rather than a single-exchange price. Best when confidence grading and spread visibility matter, e.g. for trade sizing, risk management, or cross-exchange arbitrage detection. Choose over a single-exchange price feed when you need multi-source validation and a trust score on the price.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:40:09.870Z","isFirstParty":false}