{"id":"1275b0f6-0e2d-4718-8d26-f97e62017f14","shortId":"7y9a8F","kind":"x402","title":"US W-2 tax data for 2024 via per-request x402 micropayment on Base (USDC).","tagline":"US W-2 tax data for 2024 via per-request x402 micropayment on Base (USDC).","description":"This endpoint at lowpaymentfee.com provides access to 2024 W-2 tax-related data through a simple POST request, paid per call using the x402 protocol. Payment is settled in USDC on the Base network at $0.02 per request (20,000 base units of USDC with 6 decimals). No API keys, rate limits, or upfront commitments are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers dozens of x402-gated APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services, all priced uniformly at $0.02 per request. The specific endpoint `/api/v1/tax/w2/2024` is not documented in detail on the site's landing page (which lists other categories but not tax endpoints), so the exact input schema and response format are unknown. The x402 challenge confirms the endpoint is live, accepts POST requests, and returns application/json.\n\nBecause the provider's documentation pages (docs, pricing, README) all resolve to a minimal \"Connect wallet\" stub with no further detail, the precise fields accepted and returned by this tax endpoint remain unclear. Callers should expect to experiment or contact the provider for schema details.","tags":[],"capabilities":["x402-payment","usdc-base","w2-tax-data","per-request-billing","no-api-key","json-response"],"categories":["finance","tax"],"synonyms":["W-2 tax API","2024 W2 data","tax form API","wage and tax statement","IRS W-2","payroll tax data","x402 tax endpoint"],"warnings":["No documentation exists for the /api/v1/tax/w2/2024 endpoint — input fields and response schema are completely unknown.","This endpoint is not listed on the provider's own landing page among their advertised APIs.","All documentation pages (/docs, /pricing, /README) return only a 'Connect wallet' stub with no content.","Tax data APIs may involve regulated or sensitive information; verify compliance with applicable laws before use."],"endpointUrl":"https://lowpaymentfee.com/api/v1/tax/w2/2024","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/tax/w2/2024","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge confirms the endpoint is live and priced at $0.02 USDC on Base, but there is no documentation for the tax/w2/2024 endpoint — no input schema, no response examples, and the docs pages are empty stubs. The endpoint is not even listed on the provider's own landing page, making it effectively a stub 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'/api/v1/tax/w2/2024':142 '0.02':69,136 '000':73 '20':72 '2024':7,23,40 '2024 W2 data' '6':79 'IRS W-2' 'W-2 tax API' 'accept':180,210 'access':38 'ai/ml':125 'analyt':124 'api':82,121 'application/json':185 'attach':93 'base':15,31,66,74 'broader':111 'call':54 'caller':91,219 'categori':157 'challeng':174 'commit':88 'confirm':175 'connect':200 'contact':225 'crypto':128 'data':5,21,46,123 'decim':80 'detail':147,206,230 'doc':192 'document':145,190 'dozen':116 'endpoint':34,106,141,161,177,216 'exact':164 'expect':221 'experi':223 'field':209 'financ':127 'format':169 'gate':120 'header':98 'infer':126 'input':165 'json-response' 'key':83 'land':152 'limit':85 'list':155 'live':179 'lowpaymentfee.com':36,113 'micropay':13,29 'minim':199 'network':67 'no-api-key' 'offer':115 'page':153,191 'paid':52 'part':108 'payment':59,97,103 'payroll tax data' 'per':10,26,53,70,137 'per-request':9,25 'per-request-billing' 'platform':112 'post':50,181 'precis':208 'price':133,193 'proof':104 'protocol':58 'provid':37,188,227 'rate':84 'readm':194 'relat':45 'remain':217 'request':11,27,51,71,138,182 'requir':90 'resolv':196 'respons':168 'return':184,212 'schema':166,229 'servic':131 'settl':61 'simpl':49 'simpli':92 'site':150 'span':122 'specif':140 'stub':202 'tax':4,20,44,160,215 'tax form API' 'tax-rel':43 'unclear':218 'uniform':134 'unit':75 'unknown':171 'upfront':87 'us':1,17 'usdc':16,32,63,77 'usdc-base' 'use':55 'util':130 'valid':101 'via':8,24 'w':2,18,41 'w2-tax-data' 'wage and tax statement' 'wallet':201 'x':96 'x-payment':95 'x402':12,28,57,102,119,173 'x402 tax endpoint' 'x402-gated':118 'x402-payment'","prices":[{"id":"68bafda4-f195-4eac-ace9-037915e8737d","listingId":"1275b0f6-0e2d-4718-8d26-f97e62017f14","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/tax/w2/2024","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:57:05.711Z"}],"sources":[{"listingId":"1275b0f6-0e2d-4718-8d26-f97e62017f14","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/tax/w2/2024","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:57:05.711Z","lastSeenAt":"2026-04-26T15:33:15.518Z"}],"details":{"listingId":"1275b0f6-0e2d-4718-8d26-f97e62017f14","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/tax/w2/2024 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_proof>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/tax/w2/2024"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/tax/w2/2024"}],"useCases":["Retrieving 2024 W-2 tax information programmatically","Integrating W-2 data into tax preparation workflows","Agents that need on-demand tax document data without managing API keys"],"bestFor":["Developers needing pay-per-call W-2 tax data without subscriptions","AI agents with x402-compatible wallets on Base","Quick one-off lookups of 2024 W-2 information"],"notFor":["Bulk historical tax data retrieval across many years (only 2024 W-2 supported)","Users without a Base-network USDC wallet","Applications requiring detailed, documented input/output schemas before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:47.855Z"},"updatedAt":"2026-04-26T15:33:15.518Z"}}