{"id":"762e4a37-b233-4a68-8c40-caff0d9b02f8","shortId":"WQbbUx","kind":"x402","title":"Pay-per-call Slack integration secret endpoint via x402 on Base for $0.02 USDC","tagline":"Pay-per-call Slack integration secret endpoint via x402 on Base for $0.02 USDC","description":"This endpoint at lowpaymentfee.com provides a \"Premium API Access\" resource at the path `/api/v1/integrations/slack/secret`. It is part of a broader platform offering dozens of pay-per-call API endpoints across data analytics, AI/ML, finance/Web3, and infrastructure categories, all settled via the x402 protocol on the Base network using USDC.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. The maximum amount required is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). Payment is made per-request with no API keys, no rate limits, and no minimum commitments — you simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe specific functionality behind this particular endpoint path (`/integrations/slack/secret`) is not documented in the crawled material. The path suggests it may return a Slack integration secret or token, but the exact request body schema and response format are unknown. The platform's landing page lists this endpoint's pricing tier consistently at $0.02 per request alongside all other endpoints. The response MIME type is `application/json`.","tags":[],"capabilities":["x402-payment","per-call-billing","usdc-base","slack-integration","json-response","no-api-key","no-rate-limit"],"categories":["integrations","infrastructure"],"synonyms":["slack secret","slack integration","slack API token","x402 slack","pay-per-call slack","lowpaymentfee slack","slack webhook secret"],"warnings":["No documentation exists for the /api/v1/integrations/slack/secret endpoint specifically — its exact purpose and response format are unknown","No OpenAPI spec, request body schema, or response schema available","The platform's /api, /pricing, and /README pages all returned only a 'Connect wallet' prompt with no useful content","The endpoint name suggests it may return secrets or credentials — handle responses securely"],"endpointUrl":"https://lowpaymentfee.com/api/v1/integrations/slack/secret","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/integrations/slack/secret","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live via a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation on what this specific endpoint does, no request/response schema, and no examples. The path name is the only hint at functionality, making this effectively a stub 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'/integrations/slack/secret':155 '0.02':14,29,110,199 '000':99 '0x8335':104 '20':98 '2913':105 '6':114 'accept':90 'access':39 'across':61 'ai/ml':64 'alongsid':202 'amount':95 'analyt':63 'api':38,59,124 'application/json':211 'attach':135 'base':12,27,77,100,107 'behind':150 'bodi':179 'broader':50 'call':4,19,58 'categori':68 'challeng':83 'commit':132 'confirm':84 'consist':197 'crawl':161 'data':62 'decim':115 'document':158 'dozen':53 'endpoint':8,23,32,60,86,153,193,205 'equal':109 'exact':177 'finance/web3':65 'format':183 'function':149 'header':140 'infrastructur':67 'integr':6,21,171 'json-response' 'key':125 'land':189 'limit':128 'list':191 'live':88 'lowpaymentfee slack' 'lowpaymentfee.com':34 'made':118 'materi':162 'maximum':94 'may':167 'mime':208 'minimum':131 'network':78 'no-api-key' 'no-rate-limit' 'offer':52 'page':190 'part':47 'particular':152 'path':43,154,164 'pay':2,17,56 'pay-per-cal':1,16,55 'pay-per-call slack' 'payment':116,139,145 'per':3,18,57,120,200 'per-call-billing' 'per-request':119 'platform':51,187 'post':91 'premium':37 'price':195 'proof':146 'protocol':74 'provid':35 'rate':127 'request':92,121,178,201 'requir':96 'resourc':40 'respons':182,207 'return':168 'schema':180 'secret':7,22,172 'settl':70 'simpli':134 'slack':5,20,170 'slack API token' 'slack integration' 'slack secret' 'slack webhook secret' 'slack-integration' 'specif':148 'suggest':165 'tier':196 'token':174 'type':209 'unit':101 'unknown':185 'usd':111 'usdc':15,30,80,103,112 'usdc-base' 'use':79,113 'valid':143 'via':9,24,71 'x':138 'x-payment':137 'x402':10,25,73,82,144 'x402 slack' 'x402-payment'","prices":[{"id":"e3f6b58a-47f7-4204-a59f-e828acb51f5c","listingId":"762e4a37-b233-4a68-8c40-caff0d9b02f8","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/integrations/slack/secret","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:23.495Z"}],"sources":[{"listingId":"762e4a37-b233-4a68-8c40-caff0d9b02f8","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/integrations/slack/secret","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:23.495Z","lastSeenAt":"2026-04-22T15:03:03.143Z"}],"details":{"listingId":"762e4a37-b233-4a68-8c40-caff0d9b02f8","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/integrations/slack/secret \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/integrations/slack/secret"},{"claim":"All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/integrations/slack/secret"}],"useCases":["Retrieving a Slack integration secret or credential on demand via micropayment","Programmatic agent access to Slack configuration without pre-provisioned API keys","Automating Slack workspace setup by fetching secrets through a paid endpoint"],"bestFor":["AI agents needing on-demand Slack integration credentials","Developers who want keyless, pay-as-you-go API access on Base","Workflows requiring instant access without signup or rate limits"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","Free-tier Slack integration needs where no payment is acceptable","High-volume bulk operations where per-call pricing becomes expensive"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:05.706Z"},"updatedAt":"2026-04-22T15:03:03.143Z"}}