{"uid":"cap_O8k74ZJefxvf3Mt6HvtS8","slug":"sigmagrid-registry-spread-signal-30f30628","name":"SigmaGrid Registry – Spread Signal","description":"Real-time quantitative signals for algorithmic trading, gated via the x402 payment protocol.","url":"https://api.sigmagrid.app/v1/spread/%7Bticker%7D?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_-8a7oYUjPtjxwU0ig6Auv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a real-time quantitative spread signal for a given ticker, gated via the x402 micropayment protocol for algorithmic trading use.","exampleAgentPrompt":"Pull the current spread signal for TSLA from SigmaGrid so I can feed it into my algo trading strategy.","exampleUseCases":[{"title":"Optimize market-making spreads in real-time","prompt":"Check the live spread signal for SPY on SigmaGrid and tell me if I should tighten or widen my quotes right now."},{"title":"Feed algo strategy with live microstructure data","prompt":"Grab the latest quantitative spread metrics for QQQ from SigmaGrid so my momentum bot can adjust its entry positions."},{"title":"Monitor spread conditions across index components","prompt":"Give me the current spread signals from SigmaGrid for the top 5 holdings in my portfolio so I can assess liquidity before executing any large orders."}],"resultDescription":"Returns a real-time quantitative spread signal for the requested ticker, likely including spread value, timestamp, and related microstructure metrics useful for algorithmic trading decisions. Each call costs $0.02 USDC via x402 payment.","failureModes":["Invalid or unrecognized ticker symbol — 404 or validation error","Payment not authorized or insufficient USDC balance — 402 Payment Required","Ticker market is closed or no real-time data available — possible 503 or empty response","Rate limit exceeded — 429 Too Many Requests","Malformed request body — 400 Bad Request"],"whenToPreferThis":"Choose this endpoint when you need real-time spread or microstructure signals for a specific ticker to feed into an algorithmic or quantitative trading system. Best suited for agents executing per-call micropayment workflows via x402 where low per-query cost ($0.02 USDC) matters. Prefer over REST market data aggregators when the x402 pay-per-call model fits your agent's architecture.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T19:25:16.301Z","isFirstParty":false,"canonicalSlug":"sigmagrid-registry-spread-signal-30f30628"}