{"uid":"cap_q9ayOOhsVtJKsYOSsHoRt","slug":"vape-chain-overview-e9bf3605","name":"VAPE Chain Overview","description":"VAPE chain_overview — A chain's headline TVL and its rank among all tracked chains (default Base).","url":"https://vape-x402.vapex402.workers.dev/data/chain_overview","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","required":[],"properties":{"chain":{"type":"string","description":"chain display name, default 'Base'"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"rank":7,"chain":"Base","tvl_usd":4100000000,"total_chains":300}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_eYF1I_d0LSeYWiWSXYSlK","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the headline TVL (Total Value Locked) and global rank for a specified blockchain (defaults to Base).","exampleAgentPrompt":"What's the current TVL on Base chain and how does it rank among all tracked chains — give me VAPE's chain overview for Base.","exampleUseCases":null,"resultDescription":"Returns the chain's headline Total Value Locked (TVL) figure and its numeric rank relative to all other chains tracked by VAPE, for the specified chain (defaulting to Base).","failureModes":["Unknown chain name returns an error or empty result","Network timeout if upstream DeFi data provider is unavailable","Invalid query parameter format may return a 400 error","Payment not fulfilled (x402) returns 402 Payment Required"],"whenToPreferThis":"Use this endpoint when you need a quick, high-level snapshot of a chain's TVL and relative rank — ideal for dashboards, DeFi comparisons, or answering 'how big is chain X?' questions. Prefer this over chain_protocols or chain_fees when you only need the headline number, not per-protocol breakdowns.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:31:44.159Z","isFirstParty":false}