{"uid":"cap_wTqs7YS2GK9l5nYsJGRbA","slug":"crypto-market-pulse-940264bb","name":"Crypto Market Pulse","description":"Crypto market overview in one call: Fear & Greed Index, BTC, ETH and SOL price, 24h change and funding, the highest and lowest funding rates, top gainers and losers, and Hyperliquid open interest.","url":"https://chain.tollkit.dev/chain/pulse?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input"],"properties":{"input":{"type":"object","required":["type","method","body"],"properties":{"body":{"type":"object","properties":{}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json"],"type":"string"}}},"output":{"type":"object","properties":{"example":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["majors","funding_highest","funding_lowest","read_at"],"properties":{"notes":{"type":"array","items":{"type":"string"}},"majors":{"type":"array","items":{"type":"object","properties":{"coin":{"type":"string"},"chainlink_usd":{"type":["number","null"]},"perp_mark_usd":{"type":["number","null"]},"change_24h_pct":{"type":["number","null"]},"open_interest_usd":{"type":["number","null"]},"funding_hourly_pct":{"type":["number","null"]},"chainlink_updated_at":{"type":["string","null"]}}}},"read_at":{"type":"string"},"sources":{"type":"array","items":{"type":"string"}},"fear_greed":{"type":["object","null"],"properties":{"date":{"type":"string"},"value":{"type":"number"},"source":{"type":"string"},"week_ago":{"type":["object","null"]},"yesterday":{"type":["object","null"]},"source_url":{"type":"string"},"classification":{"type":["string","null"]}}},"funding_lowest":{"type":"array","items":{"type":"object"}},"top_losers_24h":{"type":"array","items":{"type":"object"}},"funding_highest":{"type":"array","items":{"type":"object"}},"top_gainers_24h":{"type":"array","items":{"type":"object"}},"hyperliquid_totals":{"type":"object"}}}}}}},"responseSchema":{"type":"json","example":{"notes":["Funding, movers and up/down counts are Hyperliquid perpetuals with at least $1M open interest. Hyperliquid pays funding every hour. funding_hourly_pct is the current hourly rate; when it is positive, longs pay shorts. funding_annualized_pct is that rate × 24 × 365, for comparison only."],"majors":[{"coin":"BTC","chainlink_usd":81637.57,"perp_mark_usd":81692,"change_24h_pct":-1.4,"open_interest_usd":3265903794,"funding_hourly_pct":0.00125,"chainlink_updated_at":"2026-10-20T06:23:59.000Z"},{"coin":"ETH","chainlink_usd":2395.39,"perp_mark_usd":2395.5,"change_24h_pct":-1.57,"open_interest_usd":2582030511,"funding_hourly_pct":0.000771,"chainlink_updated_at":"2026-10-20T06:37:23.000Z"}],"read_at":"2026-10-20T07:22:33.282Z","sources":["Hyperliquid info API (api.hyperliquid.xyz)","Crypto Fear & Greed Index by Alternative.me","Chainlink Data Feeds on Ethereum"],"fear_greed":{"date":"2026-10-20","scale":"0 = extreme fear, 100 = extreme greed. 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Give me BTC, ETH, and SOL prices, the Fear & Greed Index, and which coins are gaining or losing the most in the last 24 hours."},{"title":"Funding rate arbitrage opportunity scan","prompt":"Pull the current crypto funding rates — I want to see which perps have the highest and lowest funding rates right now so I can spot potential arbitrage opportunities."},{"title":"Automated trading dashboard refresh","prompt":"Refresh my crypto dashboard — I need current prices and 24h changes for BTC, ETH, and SOL, the latest market sentiment index, top gainers and losers, and Hyperliquid's total open interest."}],"resultDescription":"Returns a JSON object with: an array of major coins (BTC, ETH, SOL) each with Chainlink USD price, perpetual mark price, 24h change percentage, funding rate, and open interest; Fear & Greed Index (current value, classification, yesterday and week-ago comparisons); arrays of highest and lowest funding rate tokens; top 24h gainers and losers; Hyperliquid aggregate open interest totals; data sources list; and a read_at timestamp.","failureModes":["Upstream data sources temporarily unavailable — partial data returned with notes field explaining missing fields","Fear & Greed Index may be null if the external source is down","Funding rate or price data may be null for individual coins if provider is unresponsive","Payment failure via x402 protocol if USDC balance is insufficient"],"whenToPreferThis":"Choose this endpoint when you need a broad crypto market overview in a single call rather than fetching individual price or funding data separately. Ideal for agents building dashboards, generating market briefings, or making trading decisions that require sentiment plus price plus funding context simultaneously. Prefer over individual price endpoints when you need the Fear & Greed Index, cross-asset funding rate comparison, or top mover rankings alongside prices.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:11:24.884Z","isFirstParty":false,"canonicalSlug":"crypto-market-pulse-940264bb"}