{"id":"5b06f785-f2d3-473b-8479-3360a7da716d","shortId":"qb7yYZ","kind":"x402","title":"List all DeFi protocols with TVL and category data via a single x402-paid API call.","tagline":"List all DeFi protocols with TVL and category data via a single x402-paid API call.","description":"The `/defi/protocols` endpoint is part of the DeFi Intelligence API hosted at defi.hugen.tokyo. It returns a list of all tracked DeFi protocols, including their names, TVL (Total Value Locked), and category classifications (e.g., Liquid Staking, Lending). The endpoint requires no query parameters — a simple GET request returns the full protocol list. Payment is handled via the x402 protocol at $0.01 USDC per call on Base.\n\nThis endpoint is one of 26 DeFi-focused endpoints offered by the same API, which spans token security audits, rugpull detection, bridge routing, gas prices, stablecoin analytics, DEX volume, and more. All endpoints follow the same x402 pay-per-call model with no API keys or rate limits required. Alternative access methods include a broker API (with a free API key providing $0.05 credit), an MCP server at mcp.hugen.tokyo, and a Python SDK (`x402-pay`).\n\nThe OpenAPI spec (v3.1.0) documents the endpoint but does not include a response schema for `/defi/protocols`. The x402 challenge includes a sample response showing protocol objects with `name`, `tvl`, and `category` fields. The endpoint returned a valid 402 challenge when probed, confirming it is live.","tags":[],"capabilities":["defi-protocol-list","tvl-data","protocol-categories","x402-payment","pay-per-call","no-api-key","multi-chain-defi","evm-data"],"categories":["defi","crypto","data"],"synonyms":["DeFi protocols list","protocol TVL","DeFi analytics","protocol categories","DeFi data API","total value locked","DeFi intelligence","crypto protocol data"],"warnings":["Response schema is not defined in the OpenAPI spec — the sample in the 402 challenge is the only indication of response structure.","No dedicated documentation or pricing page found (root, /pricing, /api, /README all return 404).","Sample response fields (total, protocols array with name/tvl/category) are inferred from the x402 challenge and may not represent the full response shape."],"endpointUrl":"https://defi.hugen.tokyo/defi/protocols","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60","amount":"5000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","extra":{"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"},"payTo":"4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z","amount":"5000","scheme":"exact","network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","maxTimeoutSeconds":300}]},"qualityScore":"0.620","qualityRationale":"The endpoint is live (402 challenge confirmed) and has an OpenAPI spec, but the response schema for /defi/protocols is empty. The sample response in the x402 challenge provides some structure but is only illustrative. No dedicated docs page or pricing page exists beyond the OpenAPI 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'0.01':94 '0.05':164 '26':105 '402':215 'DeFi analytics' 'DeFi data API' 'DeFi intelligence' 'DeFi protocols list' 'access':152 'altern':151 'analyt':127 'api':16,33,44,114,145,157,161 'audit':119 'base':99 'bridg':122 'broker':156 'call':17,34,97,141 'categori':8,25,65,208 'challeng':196,216 'classif':66 'confirm':219 'credit':165 'crypto protocol data' 'data':9,26 'defi':3,20,42,55,107 'defi-focus':106 'defi-protocol-list' 'defi.hugen.tokyo':47 'detect':121 'dex':128 'document':182 'e.g':67 'endpoint':37,72,101,109,133,184,211 'evm-data' 'field':209 'focus':108 'follow':134 'free':160 'full':83 'gas':124 'get':79 'handl':88 'host':45 'includ':57,154,188,197 'intellig':43 'key':146,162 'lend':70 'limit':149 'liquid':68 'list':1,18,51,85 'live':222 'lock':63 'mcp':167 'mcp.hugen.tokyo':170 'method':153 'model':142 'multi-chain-defi' 'name':59,205 'no-api-key' 'object':203 'offer':110 'one':103 'openapi':179 'paid':15,32 'paramet':76 'part':39 'pay':139,177 'pay-per-cal':138 'pay-per-call' 'payment':86 'per':96,140 'price':125 'probe':218 'protocol':4,21,56,84,92,202 'protocol TVL' 'protocol categories' 'protocol-categories' 'provid':163 'python':173 'queri':75 'rate':148 'request':80 'requir':73,150 'respons':190,200 'return':49,81,212 'rout':123 'rugpul':120 'sampl':199 'schema':191 'sdk':174 'secur':118 'server':168 'show':201 'simpl':78 'singl':12,29 'span':116 'spec':180 'stablecoin':126 'stake':69 'token':117 'total':61 'total value locked' 'track':54 'tvl':6,23,60,206 'tvl-data' 'usdc':95 'v3.1.0':181 'valid':214 'valu':62 'via':10,27,89 'volum':129 'x402':14,31,91,137,176,195 'x402-paid':13,30 'x402-pay':175 'x402-payment'","prices":[{"id":"85c20561-2272-4a49-9ff8-fb3f8a8761a3","listingId":"5b06f785-f2d3-473b-8479-3360a7da716d","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60","amount":"5000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300},{"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","extra":{"feePayer":"D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"},"payTo":"4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z","amount":"5000","scheme":"exact","network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:37.704Z"}],"sources":[{"listingId":"5b06f785-f2d3-473b-8479-3360a7da716d","source":"x402_bazaar","sourceId":"https://defi.hugen.tokyo/defi/protocols","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:37.704Z","lastSeenAt":"2026-04-22T05:32:30.001Z"}],"details":{"listingId":"5b06f785-f2d3-473b-8479-3360a7da716d","quickStartSnippet":"# Using the x402-pay Python SDK\npip install x402-pay\n\nimport x402_pay\nresponse = x402_pay.get('https://defi.hugen.tokyo/defi/protocols')\nprint(response.json())","exampleRequest":null,"exampleResponse":{"total":5000,"protocols":[{"tvl":15000000000,"name":"Lido","category":"Liquid Staking"},{"tvl":12500000000,"name":"Aave","category":"Lending"}]},"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The API offers 26 DeFi security and data endpoints with x402 pay-per-call pricing.","source_url":"https://defi.hugen.tokyo/docs"},{"claim":"The /defi/protocols endpoint is a GET with no required parameters.","source_url":"https://defi.hugen.tokyo/docs"},{"claim":"Payment is $0.01 USDC on Base per call, with broker, MCP, and SDK alternatives available.","source_url":"https://defi.hugen.tokyo/defi/protocols"},{"claim":"Sample response includes protocol objects with name, tvl, and category fields.","source_url":"https://defi.hugen.tokyo/defi/protocols"}],"useCases":["Retrieve a snapshot of all tracked DeFi protocols with their TVL for portfolio dashboards","Compare protocol categories and TVL rankings programmatically","Feed protocol metadata into an AI agent for DeFi research or risk analysis","Build leaderboards or analytics views of the DeFi ecosystem","Monitor DeFi protocol landscape changes over time"],"bestFor":["AI agents needing structured DeFi protocol data without API key setup","Developers building DeFi dashboards who want pay-per-call pricing","Quick one-off lookups of protocol TVL and categories"],"notFor":["High-frequency polling where per-call costs would accumulate quickly","Historical TVL time-series data (use /defi/tvl for per-protocol history instead)","Non-crypto use cases"],"kindDetails":{},"updatedAt":"2026-04-22T02:18:51.927Z"}}