{"id":"6aa2b9d1-20d4-41bf-8b68-fa0c0c655a5c","shortId":"XAXxy9","kind":"x402","title":"Bias-optimized crypto arbitrage positions via x402 micropayment endpoint","tagline":"Bias-optimized crypto arbitrage positions via x402 micropayment endpoint","description":"This endpoint from EV+ AI claims to provide bias-optimized arbitrage positions, where the bias parameter ranges from 0.1 (bearish) to 0.5 (neutral) to 0.9 (bullish). It is listed as an x402-protocol endpoint, meaning callers would normally receive a 402 Payment Required challenge with on-chain payment details before accessing the data.\n\nHowever, at the time of probing, the entire api.evplus.ai domain is experiencing a Cloudflare DNS misconfiguration (Error 1000), returning 403 responses on all paths including the root, /docs, /api, and the endpoint itself. No 402 challenge was captured, no OpenAPI schema is available, and no documentation could be retrieved. The endpoint is effectively unreachable.\n\nBecause no live response, schema, pricing information, or documentation could be obtained, nearly all details about this endpoint are inferred solely from its URL path and the existing catalog title. The bias parameter presumably controls the risk posture of returned arbitrage signals, but the exact request format, response structure, supported assets, and payment terms are unknown.","tags":[],"capabilities":["arbitrage-signals","bias-parameter","crypto-trading-signals","x402-payment"],"categories":["defi","trading"],"synonyms":["arbitrage positions","crypto arbitrage","trading signals","bias optimized signals","EV+ AI","evplus arbitrage","directional bias trading"],"warnings":["Endpoint is currently unreachable — Cloudflare Error 1000 (DNS resolution conflict) on all paths","No x402 challenge was returned; endpoint did not respond with 402 on POST or GET","No OpenAPI schema, documentation, or pricing information available","Domain-wide outage suggests the service may be abandoned or misconfigured"],"endpointUrl":"https://api.evplus.ai/api/x402/signals/bias-optimized","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0xC1A2f762F67aF72FD05e79afa23F8358A4d7dbaF","scheme":"exact","network":"base","mimeType":"","resource":"https://api.evplus.ai/api/x402/signals/bias-optimized","description":"Get bias-optimized arbitrage positions (0.1=bearish, 0.5=neutral, 0.9=bullish)","outputSchema":{"input":{"type":"http","method":"POST","discoverable":true},"output":null},"maxAmountRequired":"240000","maxTimeoutSeconds":60}]},"qualityScore":"0.100","qualityRationale":"The entire api.evplus.ai domain is down due to a Cloudflare DNS misconfiguration (Error 1000). No 402 challenge was captured, no schema or docs are available, and all information is inferred from the URL path and catalog title 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'/docs':104 '0.1':40 '0.5':43 '0.9':46 '1000':94 '402':63,111 '403':96 'EV+ AI' 'access':74 'ai':25 'api.evplus.ai':85 'arbitrag':5,15,32,171 'arbitrage positions' 'arbitrage-signals' 'asset':181 'avail':119 'bearish':41 'bias':2,12,30,36,162 'bias optimized signals' 'bias-optim':1,11,29 'bias-parameter' 'bullish':47 'caller':58 'captur':114 'catalog':159 'chain':70 'challeng':66,112 'claim':26 'cloudflar':90 'control':165 'could':123,140 'crypto':4,14 'crypto arbitrage' 'crypto-trading-signals' 'data':76 'detail':72,145 'directional bias trading' 'dns':91 'document':122,139 'domain':86 'effect':129 'endpoint':10,20,22,56,108,127,148 'entir':84 'error':93 'ev':24 'evplus arbitrage' 'exact':175 'exist':158 'experienc':88 'format':177 'howev':77 'includ':101 'infer':150 'inform':137 'list':50 'live':133 'mean':57 'micropay':9,19 'misconfigur':92 'near':143 'neutral':44 'normal':60 'obtain':142 'on-chain':68 'openapi':116 'optim':3,13,31 'paramet':37,163 'path':100,155 'payment':64,71,183 'posit':6,16,33 'postur':168 'presum':164 'price':136 'probe':82 'protocol':55 'provid':28 'rang':38 'receiv':61 'request':176 'requir':65 'respons':97,134,178 'retriev':125 'return':95,170 'risk':167 'root':103 'schema':117,135 'signal':172 'sole':151 'structur':179 'support':180 'term':184 'time':80 'titl':160 'trading signals' 'unknown':186 'unreach':130 'url':154 'via':7,17 'would':59 'x402':8,18,54 'x402-payment' 'x402-protocol':53","prices":[{"id":"bb0ed9f7-5b4a-4f22-bbd6-b55f121d03e4","listingId":"6aa2b9d1-20d4-41bf-8b68-fa0c0c655a5c","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"240000","chain":"base","payTo":"0xC1A2f762F67aF72FD05e79afa23F8358A4d7dbaF","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0xC1A2f762F67aF72FD05e79afa23F8358A4d7dbaF","scheme":"exact","network":"base","mimeType":"","resource":"https://api.evplus.ai/api/x402/signals/bias-optimized","description":"Get bias-optimized arbitrage positions (0.1=bearish, 0.5=neutral, 0.9=bullish)","outputSchema":{"input":{"type":"http","method":"POST","discoverable":true},"output":null},"maxAmountRequired":"240000","maxTimeoutSeconds":60}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":60},"createdAt":"2026-04-21T18:32:33.497Z"}],"sources":[{"listingId":"6aa2b9d1-20d4-41bf-8b68-fa0c0c655a5c","source":"x402_bazaar","sourceId":"https://api.evplus.ai/api/x402/signals/bias-optimized","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:33.497Z","lastSeenAt":"2026-04-22T05:32:24.921Z"}],"details":{"listingId":"6aa2b9d1-20d4-41bf-8b68-fa0c0c655a5c","quickStartSnippet":"# Endpoint is currently unreachable (Cloudflare DNS error 1000).\n# When live, an x402 call would look like:\ncurl https://api.evplus.ai/api/x402/signals/bias-optimized?bias=0.5","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"POST","discoverable":true},"output":null},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"All pages on api.evplus.ai return Cloudflare Error 1000 (DNS resolution conflict)","source_url":"https://api.evplus.ai"},{"claim":"Endpoint returned 403 on both POST and GET, not the expected 402 x402 challenge","source_url":"https://api.evplus.ai/api/x402/signals/bias-optimized"}],"useCases":["Fetching arbitrage opportunities with a bearish, neutral, or bullish directional bias","Integrating crypto trading signals into automated trading bots","Adjusting arbitrage strategy exposure based on market sentiment"],"bestFor":["Crypto traders seeking directional arbitrage signals","Automated trading systems that pay per API call via x402","Agents needing on-demand bias-adjusted position recommendations"],"notFor":["Users needing a currently reachable and documented API","Traditional fiat-only payment workflows without x402 support"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:12:44.243Z"},"updatedAt":"2026-04-22T05:32:24.921Z"}}