{"id":"3d87b3be-1bd4-4f21-a8f7-616cff12e21b","shortId":"ZV4Y3n","kind":"x402","title":"Slack integration key via x402 micropayment on Base for $0.02 per request","tagline":"Slack integration key via x402 micropayment on Base for $0.02 per request","description":"This endpoint at lowpaymentfee.com provides a Slack integration key accessible via the x402 payment protocol. It is part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance, crypto, infrastructure utilities, and integrations — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/integrations/slack/key` is listed under \"Premium API Access\" and accepts POST requests. Payment is handled inline via the x402 protocol: callers include an X-PAYMENT header with a signed USDC payment on Base. The x402 challenge confirms the endpoint is live, requesting a maximum of 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals) per call. No API keys, rate limits, or upfront commitments are required — you pay per request.\n\nDocumentation beyond the landing page is sparse. The platform's /api, /pricing, and /README pages all resolve to a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no explanation of what the Slack key endpoint actually returns or what parameters it expects. The endpoint appears to generate or retrieve a Slack integration key, but the exact behavior, required POST body, and response format are unknown.","tags":[],"capabilities":["x402-payment","usdc-base","slack-integration","per-request-billing","no-api-key"],"categories":["integrations","infrastructure"],"synonyms":["slack api key","slack integration token","slack webhook key","x402 slack","micropayment slack api","pay-per-call slack"],"warnings":["No OpenAPI spec or request/response schema available for this endpoint","No documentation explaining what the Slack integration key endpoint returns or what POST body it expects","Platform docs pages (/api, /pricing, /README) all resolve to empty 'Connect wallet' pages","The exact nature and scope of the returned Slack key is unknown"],"endpointUrl":"https://lowpaymentfee.com/api/v1/integrations/slack/key","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/key","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02/request in USDC on Base), but there is no documentation for this specific endpoint — no request schema, no response schema, no explanation of what a 'Slack key' means in this context. The /api, /pricing, and /README pages are all blank wallet-connect prompts. Effectively a stub 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'/api/v1/integrations/slack/key':84 '/pricing':169 '/readme':171 '0.02':10,22,70,136 '000':130 '20':129 '6':140 'accept':92 'access':34,90 'actual':203 'addit':182 'ai/ml':59 'analyt':58 'api':54,89,145 'appear':212 'base':8,20,79,116,131 'behavior':224 'beyond':159 'bodi':227 'broader':45 'call':53,143 'caller':103 'challeng':119 'commit':151 'confirm':120 'connect':177 'crypto':62 'data':57 'decim':141 'detail':184 'document':158,193 'dozen':48 'endpoint':26,55,83,122,202,211 'exact':223 'expect':209 'explan':196 'financ':61 'format':230 'generat':214 'given':137 'handl':97 'header':109 'i.e':135 'includ':104 'infer':60 'infrastructur':63 'inlin':98 'integr':2,14,32,66,219 'key':3,15,33,146,201,220 'land':161 'limit':148 'list':86 'live':124 'lowpaymentfee.com':28 'maximum':127 'micropay':6,18 'micropayment slack api' 'network':80 'no-api-key' 'offer':47 'openapi':188 'page':162,172 'paramet':207 'part':42 'pay':51,155 'pay-per-cal':50 'pay-per-call slack' 'payment':38,95,108,114 'per':11,23,52,71,142,156 'per-request-billing' 'platform':46,166 'post':93,226 'premium':88 'price':68 'prompt':179 'protocol':39,102 'provid':29 'rate':147 'request':12,24,72,94,125,157 'request/response':191 'requir':153,225 'resolv':174 'respons':229 'retriev':216 'return':204 'schema':192 'settl':74 'sign':112 'slack':1,13,31,200,218 'slack api key' 'slack integration token' 'slack webhook key' 'slack-integration' 'span':56 'spars':164 'spec':189 'specif':82 'technic':183 'unit':132 'unknown':232 'upfront':150 'usdc':76,113,134,138 'usdc-base' 'util':64 'via':4,16,35,99 'wallet':178 'x':107 'x-payment':106 'x402':5,17,37,101,118 'x402 slack' 'x402-payment'","prices":[{"id":"2179d781-c778-4b93-ab14-8a8c542c3153","listingId":"3d87b3be-1bd4-4f21-a8f7-616cff12e21b","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/key","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:23.297Z"}],"sources":[{"listingId":"3d87b3be-1bd4-4f21-a8f7-616cff12e21b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/integrations/slack/key","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:23.297Z","lastSeenAt":"2026-04-22T15:03:02.819Z"}],"details":{"listingId":"3d87b3be-1bd4-4f21-a8f7-616cff12e21b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/integrations/slack/key \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-signed-payment>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns HTTP 402 with an x402 challenge requesting 20,000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/integrations/slack/key"},{"claim":"All APIs on the platform are priced at $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 network","source_url":"https://lowpaymentfee.com/api/v1/integrations/slack/key"}],"useCases":["Programmatically obtaining a Slack integration key without managing API key subscriptions","Agent-driven workflows that need Slack connectivity on demand","Pay-per-use Slack key provisioning for ephemeral or short-lived integrations"],"bestFor":["Agents or bots that need one-off Slack integration keys","Developers who want to avoid Slack API key management overhead","x402-native workflows on the Base network"],"notFor":["Production Slack integrations requiring persistent, long-lived tokens with known scopes","Users who need detailed documentation or guaranteed SLAs before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:06.022Z"},"updatedAt":"2026-04-22T15:03:02.819Z"}}