{"id":"e206535c-274b-41be-ae69-3a9710ff2fb8","shortId":"u729gM","kind":"x402","title":"Database snapshot for May 2024, paid per-request via x402 on Base (USDC).","tagline":"Database snapshot for May 2024, paid per-request via x402 on Base (USDC).","description":"This endpoint at lowpaymentfee.com serves a database snapshot for the period 2024-05 via a POST request, gated by the x402 payment protocol. The endpoint returns JSON data and costs $0.02 per request, settled in USDC on the Base network. No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe hosting site lowpaymentfee.com offers a broad catalog of x402-gated APIs spanning data & analytics, AI/ML inference (sentiment, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02/request pricing model. This specific endpoint (`/api/v1/database/snapshots/2024-05`) is not listed on the homepage catalog, suggesting it may be a supplementary or less-advertised resource.\n\nDocumentation is extremely sparse. The /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no example payloads available. The actual contents and structure of the \"2024-05 snapshot\" are unknown from the available material.","tags":[],"capabilities":["x402-payment","usdc-base","database-snapshot","json-response","per-request-billing","no-api-key"],"categories":["data","storage"],"synonyms":["database export","data snapshot","May 2024 snapshot","lowpaymentfee API","x402 data endpoint","paid data access","Base USDC API"],"warnings":["No documentation available — /docs, /pricing, /api, /README all return only a wallet-connect prompt","No request or response schema provided; the contents of the 2024-05 snapshot are completely unknown","This specific endpoint is not listed on the provider's homepage catalog of available APIs","Cannot verify what data is actually returned without making a paid request"],"endpointUrl":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-05","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-05","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what the snapshot contains, no request/response schema, no examples, and the docs pages are empty. The endpoint is not even listed in the site's own catalog, making it effectively a stub 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'/api':168 '/api/v1/database/snapshots/2024-05':142 '/docs':166 '/pricing':167 '/readme':170 '/request':136 '0.02':59,135 '2024':5,19,40,203 'Base USDC API' 'May 2024 snapshot' 'actual':197 'advertis':159 'ai/ml':107 'analyt':106 'api':70,103 'attach':79 'avail':195,210 'base':13,27,67 'broad':97 'caller':77 'catalog':98,149 'classif':111 'connect':176 'content':182,198 'convers':128 'cost':58 'data':56,105 'data snapshot' 'databas':1,15,35 'database export' 'database-snapshot' 'document':161 'embed':112 'endpoint':30,53,131,141 'estim':122 'exampl':193 'exchang':117 'extrem':163 'feed':116 'financ':113 'gas':121 'gate':46,102 'generat':129 'geocod':126 'header':84 'homepag':148 'host':92 'infer':108 'infrastructur':124 'json':55 'json-response' 'key':71 'less':158 'less-advertis':157 'limit':74 'list':145 'lowpaymentfee API' 'lowpaymentfee.com':32,94 'materi':211 'may':4,18,152 'model':138 'network':68 'no-api-key' 'offer':95 'openapi':186 'page':171 'paid':6,20 'paid data access' 'payload':194 'payment':50,83,89 'per':8,22,60 'per-request':7,21 'per-request-billing' 'period':39 'post':44 'price':115,137 'prompt':178 'proof':90 'protocol':51 'quot':120 'rate':73,118 'render':173 'request':9,23,45,61 'request/response':189 'requir':76 'resourc':160 'return':54 'schema':190 'sentiment':109 'serv':33 'settl':62 'share':132 'simpli':78 'site':93 'snapshot':2,16,36,205 'span':104 'spars':164 'spec':187 'specif':140 'structur':200 'suggest':150 'summar':110 'supplementari':155 'token':119 'unknown':207 'usdc':14,28,64 'usdc-base' 'util':125 'valid':87,127 'via':10,24,42 'wallet':177 'web3':114 'x':82 'x-payment':81 'x402':11,25,49,88,101 'x402 data endpoint' 'x402-gated':100 'x402-payment'","prices":[{"id":"ebbfee98-a22f-405b-99db-a81971525547","listingId":"e206535c-274b-41be-ae69-3a9710ff2fb8","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-05","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-19T06:29:34.969Z"}],"sources":[{"listingId":"e206535c-274b-41be-ae69-3a9710ff2fb8","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-05","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T06:29:34.969Z","lastSeenAt":"2026-04-22T05:31:56.034Z"}],"details":{"listingId":"e206535c-274b-41be-ae69-3a9710ff2fb8","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/database/snapshots/2024-05 \\\n  -H \"X-PAYMENT: <x402_payment_proof>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-05"},{"claim":"All endpoints priced at $0.02 per request with no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-05"},{"claim":"maxAmountRequired is 20000 base units (USDC 6 decimals = $0.02)","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-05"}],"useCases":["Retrieving a historical database snapshot for May 2024","Programmatic data access without API key management","Agent-driven data procurement using x402 micropayments"],"bestFor":["Agents or scripts that need one-shot paid data retrieval without signup","Developers exploring x402 payment-gated API patterns","Accessing archived/snapshotted datasets via micropayments"],"notFor":["Users who need detailed documentation or schema guarantees before purchasing","High-volume bulk data retrieval where per-request fees add up","Anyone needing real-time or streaming data rather than a static snapshot"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:23.941Z"},"updatedAt":"2026-04-22T05:31:56.034Z"}}