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OptionsOptions FlowEvery options print, from OPRA, Cboe and Cboe GTH.Unusual PrintsSweeps, blocks and opening size, flagged as they hit.ScreenerServer-side filters over every contract and ticker.Exposure (GEX / DEX / VEX / CEX)Modeled dealer positioning by strike and expiry.Key LevelsRanked walls, gamma flip, max pain, expected move.Overnight GEXGTHSPX exposure from live Cboe GTH flow.
FuturesOrder Flow / FootprintBid × ask at every price, with imbalances.Depth MapResting liquidity as a live heatmap.Volume ProfileFull-session profile, POC and value area.DOM / LadderBook, executed volume and delta per price.GEX levels on ES/NQ charts
StocksEquity PrintsLarge prints with venue, size and conditions.Dark Pool LevelsPrices ranked by off-exchange notional.Dark FlowOff-exchange notional through the session.Charts and NewsCandles, live quotes and headlines in one place.
PlatformDashboards / Workspace43 widgets on a saved snap grid.AlertsPrice, Greek and unusual-print rules.ReplayPlay back a session at any speed.
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Pick how you trade. Each page shows the widgets that matter and the one plan that covers them.

GEX and dealer positioningWalls, flip and exposure by strikeOptions planOptions flow tradersTape, sweeps, unusual printsOptions planOrder flow and scalpersFootprint, DOM, depth mapFutures planVolume profile and auction marketPOC, value area, session profileFutures planDevelopers and quantsREST, WebSocket and MCPDeveloper API
DocsQuick start, guides and the full API reference.BlogSession reviews and product notes.Trades spottedSetups the post-session scan flagged, after the close.PartnersThe affiliate program and partner codes.

Getting started

Plans and entitlements

Two API plans share one set of endpoints, one key format and one rate limit. They differ in history window, overnight data and WebSocket streams.
On this page

Compare the plans#

API DeveloperAPI Pro
Price$149.99 per month$249.99 per month
REST, MCP and exportsYes: 149 REST endpoints, 48 MCP toolsYes
Rate limits250 per minute, 30 per second250 per minute, 30 per second
History window30 days365 days
Overnight (gth) dataNoYes
WebSocket streamsNoYes: one connection per stream, up to 20 analytics subscriptions
Free trialNoneNone

The history windows are the defaults. GET /v1/account returns the ones that apply to you in entitlements.history_days, together with plan, overnight, streaming and the enabled datasets.

There are no credits and no overage charges: usage is limited only by the rate limits, which are the same on every plan.

History window#

Endpoints that read past data list the time parameters the window applies to: start_time, end_time, timestamp and date. They are shown as x-history-params in the OpenAPI document and as the history-bounded badge on an endpoint page. A request that reaches back past the window is 403 history_limit_exceeded.

The window is a ceiling, not a promise: what exists is also limited by retention. See Data coverage and limits.

Overnight data#

Overnight (gth) option data exists for SPX, SPXW, XSP, VIX, VIXW, RUT and RUTW. It needs API Pro in three situations:

  • session=gth or session=all on an endpoint that accepts them (marked overnight in the reference).
  • Reading live chains and contract snapshots of those roots outside weekday 09:30 to 16:15 ET.
  • The futures-implied index price endpoint, /v1/indices/implied-price.

During the regular session, parts of a contract that come from the overnight session are withheld (null) for plans without it. They are listed in meta.coverage.missing and counted in meta.coverage.withheld. An overnight request without API Pro is 403 overnight_required.

WebSocket streams#

Streaming needs API Pro: one connection per stream, and up to 20 analytics subscriptions. Without it the upgrade is refused with 403 streaming_not_in_plan. See WebSockets.

Dataset releases#

Data is grouped into four datasets that a deployment enables separately. entitlements.datasets in GET /v1/account lists the enabled ones, and an endpoint of a dataset that is not enabled answers 403 dataset_release_restricted.

DatasetEndpoints
options/v1/options/*
futures/v1/futures/*
indices/v1/indices/*
equities/v1/stocks/*, /v1/news and /v1/market/overview. The index and futures parts of the overview also need indices and futures, below.
none/v1/status, /v1/openapi.json, /v1/catalog, /v1/account/*, /v1/market/* other than the overview, /v1/indices/list and /v1/futures/sessions.

Some endpoints combine datasets. /v1/indices/basis, /v1/indices/basis/snapshot and /v1/indices/implied-price need both futures and indices. /v1/market/overview needs equities and also carries index values and front futures prices: a key whose releases do not include indices or futures gets that part empty, named in meta.coverage.missing with meta.coverage.complete set to false, instead of a refusal. The WebSocket streams belong to the same datasets, and /v1/ws/indices/basis needs futures and indices.