{"version":1,"description":"TradeSonar — dYdX on-chain trading signals: market data, funding term structure, large trades, position crowding, whale/smart-money flow, and profitability leaderboards. Pay-per-call via x402 (Base USDC), API key, or RapidAPI.","resources":["GET /v1/funding/extreme","GET /v1/funding/{ticker}","GET /v1/markets","GET /v1/markets/{ticker}","GET /v1/markets/{ticker}/large-trades","GET /v1/markets/{ticker}/candles","GET /v1/markets/{ticker}/crowding","GET /v1/whales/{address}/positions","GET /v1/whales/{address}/pnl","GET /v1/whales/leaderboard","GET /v1/whales/flow"],"instructions":"TradeSonar exposes dYdX v4 on-chain trading signals as paid HTTP GET endpoints under /v1. Payment options, in priority order: (1) x402 micropayment — an unpaid GET /v1/* returns HTTP 402 with an x402 challenge in the `payment-required` response header AND JSON body; pay per call in USDC on Base mainnet (network eip155:8453, USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The AUTHORITATIVE per-call price is the `accepts[]` array in that 402 response ($0.001–$0.01 depending on endpoint). (2) `X-API-Key` header. (3) RapidAPI subscription. Machine-readable catalog at https://api.tradesonar.io/llms.txt and https://api.tradesonar.io/openapi.json. Tickers use the -USD form (e.g. ETH-USD); whale addresses are dYdX bech32 (dydx1...).","ownershipProofs":[]}