{"id":"81aafb38-d498-44dc-93d1-48f3b453f462","shortId":"PXRVyj","kind":"x402","title":"Search for ERC20 tokens, NFTs, users, apps, and gas tokens across 60+ chains via x402 micropayment.","tagline":"Search for ERC20 tokens, NFTs, users, apps, and gas tokens across 60+ chains via x402 micropayment.","description":"Zapper's `/x402/search` endpoint lets you search across ERC20 tokens, gas tokens, NFT collections, users (ENS/Basenames), and dApps by keyword. It is one of 17 paid tools in the Zapper x402 API suite, which provides onchain data across 60+ chains including token prices, portfolios, NFT metadata, transaction history, and social identity resolution.\n\nThe search accepts a text query and optional category filters (`ERC20_TOKEN`, `GAS_TOKEN`, `NFT_COLLECTION`, `USER`, `APP`). Results are polymorphic — each result includes fields relevant to its category (e.g., `symbol` and `decimals` for tokens, `collection.floorPrice` for NFTs, `account.farcasterProfile` for users). You can limit results per category with `maxResultsPerCategory` (default 5).\n\nPayment is handled via the x402 protocol on Base (chain 8453) using USDC. Each call costs 4,500 base units of USDC (6 decimals), which equals $0.0045 per request. The endpoint also supports MPP (Tempo) settlement. The x402 challenge was confirmed live, returning a proper 402 with payment parameters. This is part of the broader Zapper API, which is migrating from its legacy v2 REST API to these x402-gated POST endpoints.","tags":[],"capabilities":["onchain-search","erc20-token-lookup","nft-collection-search","ens-resolution","basename-resolution","farcaster-user-search","dapp-search","multi-chain","x402-payment","base-usdc-settlement"],"categories":["search","blockchain","crypto"],"synonyms":["Zapper search","onchain search","token search","NFT search","ENS lookup","blockchain entity search","web3 search","crypto search API","Zapper x402"],"warnings":["Legacy Zapper API docs at /api show a deprecation notice directing users to build.zapper.xyz; the x402 endpoints appear to be the replacement but no standalone documentation site was crawlable.","Example response is inferred from the output schema in the OpenAPI spec, not from an actual captured 200 response."],"endpointUrl":"https://public.zapper.xyz/x402/search","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x43a2a720cd0911690c248075f4a29a5e7716f758","amount":"4500","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":10}]},"qualityScore":"0.820","qualityRationale":"Full OpenAPI schema with input/output descriptions, live 402 challenge confirmed, clear pricing ($0.0045/call in Base USDC), and example request/response shapes provided. Docked slightly because no actual 200 response sample was captured and the legacy docs page is deprecated with no replacement crawlable 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'0.0045':162 '17':57 '4':152 '402':181 '5':135 '500':153 '6':158 '60':12,28,71 '8453':146 'ENS lookup' 'NFT search' 'Zapper search' 'Zapper x402' 'accept':87 'account.farcasterprofile':123 'across':11,27,40,70 'also':167 'api':64,192,201 'app':7,23,102 'base':144,154 'base-usdc-settlement' 'basename-resolution' 'blockchain entity search' 'broader':190 'call':150 'categori':93,113,131 'chain':13,29,72,145 'challeng':174 'collect':46,100 'collection.floorprice':120 'confirm':176 'cost':151 'crypto search API' 'dapp':50 'dapp-search' 'data':69 'decim':117,159 'default':134 'e.g':114 'endpoint':36,166,208 'ens-resolution' 'ens/basenames':48 'equal':161 'erc20':3,19,41,95 'erc20-token-lookup' 'farcaster-user-search' 'field':109 'filter':94 'gas':9,25,43,97 'gate':206 'handl':138 'histori':80 'ident':83 'includ':73,108 'keyword':52 'legaci':198 'let':37 'limit':128 'live':177 'maxresultspercategori':133 'metadata':78 'micropay':16,32 'migrat':195 'mpp':169 'multi-chain' 'nft':45,77,99 'nft-collection-search' 'nfts':5,21,122 'onchain':68 'onchain search' 'onchain-search' 'one':55 'option':92 'paid':58 'paramet':184 'part':187 'payment':136,183 'per':130,163 'polymorph':105 'portfolio':76 'post':207 'price':75 'proper':180 'protocol':142 'provid':67 'queri':90 'relev':110 'request':164 'resolut':84 'rest':200 'result':103,107,129 'return':178 'search':1,17,39,86 'settlement':171 'social':82 'suit':65 'support':168 'symbol':115 'tempo':170 'text':89 'token':4,10,20,26,42,44,74,96,98,119 'token search' 'tool':59 'transact':79 'unit':155 'usdc':148,157 'use':147 'user':6,22,47,101,125 'v2':199 'via':14,30,139 'web3 search' 'x402':15,31,63,141,173,205 'x402-gated':204 'x402-payment' 'zapper':33,62,191","prices":[{"id":"0d3d81a6-8c6f-4b52-ac8f-b9f02c21a654","listingId":"81aafb38-d498-44dc-93d1-48f3b453f462","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x43a2a720cd0911690c248075f4a29a5e7716f758","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x43a2a720cd0911690c248075f4a29a5e7716f758","amount":"4500","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":10}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":10},"createdAt":"2026-04-21T18:32:34.129Z"}],"sources":[{"listingId":"81aafb38-d498-44dc-93d1-48f3b453f462","source":"x402_bazaar","sourceId":"https://public.zapper.xyz/x402/search","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:34.129Z","lastSeenAt":"2026-04-22T04:02:49.459Z"}],"details":{"listingId":"81aafb38-d498-44dc-93d1-48f3b453f462","quickStartSnippet":"curl -X POST https://public.zapper.xyz/x402/search \\\n  -H 'Content-Type: application/json' \\\n  -H 'X-Payment: <x402-payment-token>' \\\n  -d '{\"search\": \"USDC\", \"categories\": [\"ERC20_TOKEN\"], \"maxResultsPerCategory\": 5}'","exampleRequest":{"search":"USDC","categories":["ERC20_TOKEN"],"maxResultsPerCategory":5},"exampleResponse":{"data":{"searchV2":{"results":[{"name":"USD Coin","erc20":{"decimals":6,"networkV2":{"name":"Base"}},"symbol":"USDC","address":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","category":"ERC20_TOKEN","decimals":6,"imageUrl":"https://example.com/usdc.png"}]}}},"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The search endpoint costs 4500 base units of USDC on Base (chain 8453), equaling $0.0045 per call.","source_url":"https://public.zapper.xyz/x402/search"},{"claim":"Zapper API provides onchain data across 60+ chains — token prices, NFTs, portfolios, transactions, and more.","source_url":"https://public.zapper.xyz/x402/search"},{"claim":"Searchable categories include ERC20_TOKEN, GAS_TOKEN, NFT_COLLECTION, USER, and APP.","source_url":"https://public.zapper.xyz/x402/search"},{"claim":"The legacy Zapper API at /api shows a deprecation notice directing to build.zapper.xyz.","source_url":"https://public.zapper.xyz/api"}],"useCases":["Finding ERC20 token contract addresses and metadata by symbol or name","Discovering NFT collections by name with floor price data","Resolving ENS names and Basenames to wallet addresses","Looking up dApps indexed by Zapper","Building agent-driven crypto research workflows that need entity resolution"],"bestFor":["AI agents that need to resolve token symbols to contract addresses before making other onchain calls","Portfolio dashboards that need search-as-you-type for tokens and NFTs","Chatbots answering questions about crypto assets, users, or dApps"],"notFor":["Full-text search of transaction data or block contents","Off-chain or traditional web search","Free/unauthenticated bulk data scraping"],"kindDetails":{},"updatedAt":"2026-04-22T01:07:27.399Z"}}