{"uid":"cap_w9X0YtridiKju5gb3WcZt","slug":"barker-defi-vault-supply-yield-query-fb7aadbf","name":"Barker DeFi Vault Supply Yield Query","description":"Query real-time stablecoin supply yield pools from Barker's index of 500+ DeFi protocols. Returns ranked rows with protocol_name, chain_name, asset_symbol, supply_apy_total (decimal — multiply by 100 for %), and supply_tvl (USD). Use for questions like 'best stablecoin yield', 'where to earn on USDC', 'compare lending rates', '稳定币利率'.","url":"https://mcp.barker.money/barker_defi_vaults?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"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"],"type":"string"},"queryParams":{"type":"object","properties":{"sort":{"enum":["apy","tvl"],"type":"string","description":"Sort key"},"asset":{"type":"string","description":"Stablecoin symbol (lowercase): usdt, usdc, dai, usde, usds, fdusd, gho, crvusd, pyusd, sdai, frxusd, tusd, lusd, dola, etc."},"chain":{"type":"string","description":"Chain name (lowercase): ethereum, bsc, arbitrum, base, polygon, optimism, avalanche, solana, etc."},"limit":{"type":"integer","maximum":100,"minimum":1,"description":"Row count (default 50, max 100)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_w9WOG0VgyWTCP65WgqV9h","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x779ded0c9e1022225f8e0630b35a9b54be713736","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a ranked list of real-time stablecoin supply yield pools across 500+ DeFi protocols, with APY, TVL, protocol, chain, and asset details.","exampleAgentPrompt":"Show me the top 20 stablecoin yield pools on Ethereum right now, sorted by APY — I want to see which protocols are paying the most for USDC or USDT deposits.","exampleUseCases":[{"title":"Best USDC yield on Arbitrum","prompt":"What are the best places to earn yield on USDC right now on Arbitrum? Show me the top 10 pools sorted by APY."},{"title":"Compare stablecoin rates across protocols","prompt":"I want to compare lending rates for USDT across all chains — give me the top 50 pools sorted by APY so I can see which DeFi protocols are paying the most."},{"title":"Largest stablecoin pools by TVL","prompt":"Which stablecoin yield pools have the most liquidity on Base? Sort by TVL and show me the top 25 so I can find the most battle-tested options."}],"resultDescription":"Returns ranked rows, each containing protocol_name, chain_name, asset_symbol, supply_apy_total (decimal — multiply by 100 for percent), and supply_tvl (USD). Results can be sorted by APY or TVL and filtered by specific stablecoin asset and/or blockchain chain.","failureModes":["Invalid asset symbol returns empty results or error","Invalid chain name returns empty results or error","sort parameter must be exactly 'apy' or 'tvl' — other values rejected","limit exceeding 100 returns validation error","Real-time data may have brief staleness during protocol indexing refresh"],"whenToPreferThis":"Use this endpoint when you need a broad ranked survey of stablecoin yield opportunities across many protocols and chains simultaneously — ideal for comparison, discovery, and screening. Prefer this over single-pool dossier endpoints when you don't know which specific pool to look up, or when the user wants to see ranked options rather than details on one pool.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T12:30:28.805Z","isFirstParty":false,"canonicalSlug":"barker-defi-vault-supply-yield-query-fb7aadbf"}