{"id":"be6ba4c2-34d3-4f8d-8af5-0a852e6e4c2c","shortId":"KXXqFJ","kind":"x402","title":"Bias-optimized crypto arbitrage signals via x402 micropayment endpoint.","tagline":"Bias-optimized crypto arbitrage signals via x402 micropayment endpoint.","description":"This endpoint at evplus-funding-server.onrender.com claims to provide bias-optimized arbitrage position signals. The bias parameter ranges from 0.1 (bearish) to 0.9 (bullish), with 0.5 representing a neutral stance. The service is intended to be gated behind the x402 payment protocol, suggesting per-request micropayments for access to trading signals.\n\nVery little is known about this service beyond its URL and title. All crawled pages (root, /docs, /api, /pricing, /README) returned 404 Not Found. The probe did not return a 402 challenge from the endpoint, meaning the x402 payment flow could not be verified. No OpenAPI schema, documentation, pricing information, or example responses were discovered. The server is hosted on Render's free/shared tier (onrender.com), which may indicate cold-start latency or limited availability.\n\nGiven the complete absence of documentation, schema, and a working 402 challenge, this listing is effectively a stub. Prospective users should exercise caution and verify the endpoint is operational before relying on it for any trading decisions.","tags":[],"capabilities":["crypto-arbitrage-signals","bias-parameter","funding-rate-analysis","x402-payment-gated"],"categories":["finance","crypto"],"synonyms":["funding rate arbitrage","crypto arbitrage signals","bias-optimized trading","EV+ funding","perpetual futures arbitrage","crypto funding rate","bearish bullish signals"],"warnings":["Endpoint did not return a 402 challenge during probing — x402 payment flow is unverified","All documentation and informational pages return 404 Not Found","No OpenAPI schema or response examples available","Hosted on Render free tier — may experience cold starts or downtime","No pricing information discoverable","Financial signals endpoint with no disclaimers or regulatory information"],"endpointUrl":"https://evplus-funding-server.onrender.com/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://evplus-funding-server.onrender.com/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":"All crawled pages return 404, no 402 challenge was returned, and no documentation, schema, pricing, or examples exist. The listing is a stub based solely on the endpoint URL and its 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'/docs':88 '/pricing':90 '/readme':91 '0.1':39 '0.5':45 '0.9':42 '402':102,157 '404':93 'EV+ funding' 'absenc':150 'access':68 'arbitrag':5,15,31 'avail':146 'bearish':40 'bearish bullish signals' 'behind':57 'beyond':79 'bias':2,12,29,35 'bias-optim':1,11,28 'bias-optimized trading' 'bias-parameter' 'bullish':43 'caution':169 'challeng':103,158 'claim':25 'cold':141 'cold-start':140 'complet':149 'could':112 'crawl':85 'crypto':4,14 'crypto arbitrage signals' 'crypto funding rate' 'crypto-arbitrage-signals' 'decis':183 'discov':126 'document':119,152 'effect':162 'endpoint':10,20,22,106,173 'evplus-funding-server.onrender.com':24 'exampl':123 'exercis':168 'flow':111 'found':95 'free/shared':134 'funding rate arbitrage' 'funding-rate-analysis' 'gate':56 'given':147 'host':130 'indic':139 'inform':121 'intend':53 'known':75 'latenc':143 'limit':145 'list':160 'littl':73 'may':138 'mean':107 'micropay':9,19,66 'neutral':48 'onrender.com':136 'openapi':117 'oper':175 'optim':3,13,30 'page':86 'paramet':36 'payment':60,110 'per':64 'per-request':63 'perpetual futures arbitrage' 'posit':32 'price':120 'probe':97 'prospect':165 'protocol':61 'provid':27 'rang':37 'reli':177 'render':132 'repres':46 'request':65 'respons':124 'return':92,100 'root':87 'schema':118,153 'server':128 'servic':51,78 'signal':6,16,33,71 'stanc':49 'start':142 'stub':164 'suggest':62 'tier':135 'titl':83 'trade':70,182 'url':81 'user':166 'verifi':115,171 'via':7,17 'work':156 'x402':8,18,59,109 'x402-payment-gated'","prices":[{"id":"433c68cf-4fed-421e-a760-330c91e33fe2","listingId":"be6ba4c2-34d3-4f8d-8af5-0a852e6e4c2c","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://evplus-funding-server.onrender.com/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":"2026-04-18T18:30:20.407Z"}],"sources":[{"listingId":"be6ba4c2-34d3-4f8d-8af5-0a852e6e4c2c","source":"x402_bazaar","sourceId":"https://evplus-funding-server.onrender.com/api/x402/signals/bias-optimized","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:30:20.407Z","lastSeenAt":"2026-04-23T20:01:12.305Z"}],"details":{"listingId":"be6ba4c2-34d3-4f8d-8af5-0a852e6e4c2c","quickStartSnippet":"# Endpoint expects x402 payment; direct call shown for illustration\ncurl https://evplus-funding-server.onrender.com/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 crawled pages (root, /docs, /api, /pricing, /README) returned 404 Not Found","source_url":"https://evplus-funding-server.onrender.com"},{"claim":"Endpoint did not return a 402 challenge during probing","source_url":"https://evplus-funding-server.onrender.com/api/x402/signals/bias-optimized"}],"useCases":["Retrieving arbitrage position recommendations with a directional bias","Integrating crypto funding-rate signals into automated trading bots","Exploring bias-adjusted arbitrage opportunities across perpetual futures markets"],"bestFor":["Crypto traders seeking directional arbitrage signals","Automated trading agents that can pay per request via x402","Developers experimenting with micropayment-gated financial data"],"notFor":["Users needing guaranteed uptime or SLA-backed services","Anyone requiring comprehensive documentation or schema validation before integration","Regulated financial advisory use cases"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-03-05T11:02:05.04Z"},"updatedAt":"2026-04-23T20:01:12.305Z"}}