{"uid":"cap_lNbw7ztynezT7efYdOSqp","slug":"fastapi-online-defi-chain-tvl-lookup-61c2cba3","name":"fastapi.online — DeFi Chain TVL Lookup","description":"Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.","url":"https://api.fastapi.online/chains-tvl?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":[],"properties":{}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false}}},"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":"down","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_zram_ob-EmsLiPIlfHi-n","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches Total Value Locked (TVL) data across DeFi blockchain chains via a self-hosted proxy endpoint.","exampleAgentPrompt":"Can you pull the current Total Value Locked data for all DeFi chains so I can see which blockchains have the most liquidity right now?","exampleUseCases":[{"title":"DeFi Market Overview Dashboard","prompt":"Get me the latest TVL figures for all blockchain chains so I can build a snapshot of where DeFi liquidity is concentrated today."},{"title":"Chain Comparison for Investment Research","prompt":"Which blockchain networks have the highest total value locked in DeFi right now? Pull the chain TVL data and rank them for me."},{"title":"DeFi Ecosystem Health Check","prompt":"Fetch the current TVL across all DeFi chains — I want to see if the overall market has grown or shrunk compared to what I expect."}],"resultDescription":"Returns a list of blockchain chains with their associated Total Value Locked (TVL) figures, likely including chain name, TVL in USD, and possibly protocol counts or percentage breakdowns — sourced from an aggregated DeFi data feed.","failureModes":["Empty or malformed POST body may cause 400 Bad Request","Upstream DeFi data source unavailable leading to 502 or timeout","Payment not processed correctly resulting in 402 Payment Required","Rate limiting if called too frequently without valid payment","Missing required 'input' wrapper object causes schema validation error"],"whenToPreferThis":"Use this endpoint when you need a pay-per-call, no-signup DeFi chain TVL lookup paid via USDC crypto micropayment (x402 protocol). Prefer this over free aggregator APIs when you want on-demand, permissionless access without API key registration, or when integrating into an autonomous agent workflow that pays per query with crypto.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-14T18:28:18.212Z","isFirstParty":false,"canonicalSlug":"fastapi-online-defi-chain-tvl-lookup-61c2cba3"}