{"uid":"cap_wzSUWeaiT1V3-1Y9TmcnB","slug":"usenami-orderbook-depth-quote-single-venue-symbol-1fa3c106","name":"Usenami Orderbook Depth Quote — Single Venue/Symbol","description":"Depth quote for one crypto perp on ONE named venue: best bid/ask, depth per side, and est_slippage_for_size_usd_bps — the cost of filling size_usd here, in BASIS POINTS over the mid, not dollars. On a book deep enough to fill at the touch it equals half the spread and is the same for $1K/$5K/$10K; on a thinner book it grows with size. Equal values across sizes mean the book covers you, not that size_usd was ignored. All venues: /v1/orderbook/multi-venue-slippage. $10K cap per DIS-022.","url":"https://api.usenami.io/v1/orderbook/depth/:venue/:symbol?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SHOLlmuQ2ZhjZoP2TD90p","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns best bid/ask, per-side depth, and estimated slippage in basis points over mid for a specific crypto perpetual on a named exchange venue.","exampleAgentPrompt":"What's the orderbook depth and estimated slippage in basis points to fill $5,000 of BTC-PERP on Binance right now?","exampleUseCases":[{"title":"Pre-trade slippage check before execution","prompt":"Before I place a $10K buy on ETH-PERP on Bybit, can you tell me how deep the book is and how many basis points of slippage I should expect over the mid?"},{"title":"Assess liquidity on a thin DEX venue","prompt":"How liquid is the SOL-PERP market on Hyperliquid right now — give me the best bid/ask and the estimated slippage cost in bps to fill $1,000 notional."},{"title":"Monitor execution cost for algorithmic trading","prompt":"I need to know the current orderbook depth and basis-point slippage estimate for AVAX-PERP on OKX — I'm deciding whether the spread is tight enough to trade here."}],"resultDescription":"Returns the best bid and ask prices, available liquidity depth per side of the book, and est_slippage_for_size_usd_bps — a pre-computed estimate of fill cost in basis points over the mid price. On deep books this equals roughly half the spread regardless of size; on thin books it increases with order size. Capped at $10K notional per call (DIS-022).","failureModes":["Unknown venue name returns 404 or error — must use exact venue identifiers from supported venue list","Unsupported symbol returns empty or error response","Book is temporarily unavailable for a venue, returning stale or null data","size_usd above $10K cap may be rejected or clamped per DIS-022","Network latency may cause slightly stale snapshot data in fast-moving markets"],"whenToPreferThis":"Use this endpoint when you need slippage cost in basis points and depth data for a single specific venue and symbol pair — ideal for pre-trade analysis, execution cost modeling, or deciding whether a particular venue is liquid enough. Use /v1/orderbook/multi-venue-slippage instead when you want to compare slippage across all venues simultaneously. Use the top-of-book endpoint if you only need best bid/ask without depth or slippage estimates.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T09:26:51.169Z","isFirstParty":false,"canonicalSlug":"usenami-orderbook-depth-quote-single-venue-symbol-1fa3c106"}