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Start L25

L25 roams a whole venue — pick which one (Polymarket prediction markets, Hyperliquid or Kalshi); each venue is its own subscription, so plans for other venues add up alongside this one. History before your 7-day lookback is bought as backfill, below or later from your plan page. Confirm the seat terms below; checkout happens on Stripe's hosted page.

L25

$99/ month

Whole venue · roaming · single seat

✓Full 25-level book + L1 + trades + ticker for every series
✓The CF Benchmarks index feed Kalshi's crypto markets settle on
✓REST API (600 req/min), SFTP, fair-use caps
✓Pay yearly and the archive at purchase is included
✓Backfill from 27 Sep 2026: $99 a month
✓Trades back to June 2021 (trades only, whole exchange): $7.50 a month

this plan is for

Polymarket prediction markets · prediction markets + perps
Every prediction market on the venue — L1, L2, trades, candles, on-chain fills.Hyperliquid · hyperliquid
Every Hyperliquid perp, spot pair and HIP-3 market since January 2025 — top of book on every change, the 25-level order book on every change, and every trade, reconstructed from the chain's own order-event stream rather than sampled from a websocket.Kalshi · kalshi
Every Kalshi series from our own capture (from 27 September 2026): the 25-level book on every change, top of book, every trade and Kalshi's ticker, plus every Kalshi trade back to June 2021 as trades-only history.

Each venue is its own subscription: add another venue's plan whenever you like, monthly or yearly, and they add up.

billing

Monthly · $99 / month
Charged every month. Cancel any time.Yearly · $1,188 / year
$99 a month, charged once a year — twelve monthly payments, and the archive at purchase (up to twelve months of history at this depth) is included. Access runs to the end of the paid year.

Kalshi's book starts with our capture on 27 September 2026: the days from then to your lookback can be added below. Its trade history back to June 2021 (trades only) is bought as backfill from your plan page once you subscribe.

history (backfill, one-time)

Your plan reaches 7 days back from today (2026-10-17). Add earlier months now, paid once with the first invoice and downloadable for twelve months — or buy them later from your account page. Kalshi has no whole month before that yet: the days back to its archive's start are charged by the day.

depthwhole months backthe 16 days before that this month ($51.10)

No backfill in the cart. Six months cost five, twelve cost eight.

This plan is for one named user only. Credentials, downloads, API keys and data access may not be shared, and the data may not be resold or redistributed. I agree to the Terms and Conditions.

Last step: your accountthen straight to secure payment on Stripe

Tick the seat terms above to continue.

Monthly billing · cancel anytime, self-serve · Stripe-hosted checkout