{"uid":"cap_LkqZERnMRMAS2QOz0dZjE","slug":"chain-tvl-lookup-via-x402-653ad8da","name":"Chain TVL Lookup via x402","description":"Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.","url":"https://kr-x402-mvp.kgy5612.workers.dev/api/chain-tvl?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":{"chain":{"type":"string","examples":["Base","Ethereum"],"maxLength":40,"description":"Chain name, e.g. Base, Ethereum, Solana"},"limit":{"type":"integer","maximum":50,"minimum":1,"description":"Top chains to list (default 15)"},"protocol":{"type":"string","examples":["aave"],"maxLength":60,"description":"DefiLlama protocol slug, e.g. aave, lido, aerodrome"}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"defi":{"base":{"rank":5,"tvl_usd":3900000000,"share_pct":3.1},"flow":"flat","change_1d_pct":0.3,"change_7d_pct":-2.1,"total_tvl_usd":125000000000,"chains_counted":300,"change_30d_pct":4},"next":["/crypto/global-market","/crypto/stablecoin-peg"],"chain":{"flow":"flat","name":"Base","rank":5,"as_of":"2026-10-30","tvl_usd":3900000000,"chain_id":8453,"change_1d_pct":0.4,"change_7d_pct":-1.2,"change_30d_pct":5.6,"share_of_defi_pct":3.1},"signal":"NEUTRAL","source":"https://defillama.com","reasons":["DeFi TVL $125.0B, 7d -2.1%","Base #5 $3.90B, 7d -1.2% (flat)"],"top_chains":[{"name":"Ethereum","rank":1,"token":"ETH","tvl_usd":70000000000,"share_pct":56}],"updated_at":"2026-10-30T02:30:00Z"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_6Guflvg8hi8IIT3Gmv6d4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns DeFi TVL data for a specific blockchain or across all chains, with rankings, flow signals, and 1d/7d/30d change metrics — paid per-call via x402 USDC micropayment.","exampleAgentPrompt":"What's the current TVL on Base — is it growing or flat — and how does it rank among all chains? Show me the top 15 chains too.","exampleUseCases":[{"title":"Monitor Base DeFi health for trading bot","prompt":"Check the TVL on Base right now and tell me if it's trending up or down over the last 7 days — I want to know if DeFi activity there is growing or shrinking before my agent deploys liquidity."},{"title":"Compare chain TVL rankings for portfolio rebalancing","prompt":"Pull the top 10 blockchains by DeFi TVL and show me their rankings, 7-day changes, and share of total DeFi — I want to see which chains are gaining or losing dominance."},{"title":"Track global DeFi TVL for macro signal","prompt":"What's the total DeFi TVL across all chains today, and how has it changed over the past 30 days? I want a NEUTRAL/BULLISH/BEARISH signal on whether the DeFi market is expanding."}],"resultDescription":"Returns a JSON object with: global DeFi TVL, the queried chain's TVL rank, USD value, 1d/7d/30d percent changes, flow label (flat/inflow/outflow), DeFi share percentage, chain ID, top chains list with names/ranks/tokens/TVL, a NEUTRAL/BULLISH/BEARISH signal, human-readable reasons, source attribution, and a timestamp. Also includes suggested next endpoints.","failureModes":["Unknown chain name returns no chain-specific data or an error","Limit parameter outside 1–50 range is rejected","Network or worker timeout returns a 5xx error","x402 payment failure (insufficient USDC balance or wrong network) blocks the call","Stale data if DefiLlama upstream is delayed"],"whenToPreferThis":"Use this endpoint when an AI agent needs fast, per-call DeFi TVL data without API key management — especially useful for onchain trading agents that already hold USDC on Base and want programmatic TVL signals. Prefer over free DefiLlama API when you need a pay-as-you-go micropayment model with no rate-limit concerns, or when the agent is already in an x402 payment loop.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:42:25.851Z","isFirstParty":false,"canonicalSlug":"chain-tvl-lookup-via-x402-653ad8da"}