Order-book depth & history for Polymarket, Kalshi & Limitless. Keyless demo, key for full access.
Scored across 15 tools
Tools are largely separable by venue prefix plus resource (Kalshi/Limitless/Polymarket orderbook vs. snapshots vs. search), and bars/backtest_paths/screener occupy distinct roles. The weakest spot is market discovery: polymarket_all_markets, polymarket_search_markets, and polymarket_get_market overlap in intent, though descriptions do spell out the differences (all categories vs. crypto up/down vs. single market).
The venue-scoped tools follow a clean venue_verb_noun pattern (kalshi_get_candles, limitless_search_markets, polymarket_get_snapshots). But the cross-venue tools break it entirely with bare nouns or single verbs (bars, screener, whoami, backtest_paths), so the set reads as two conventions stitched together. Still readable, just not predictable as a whole.
15 tools is well within a healthy range and each earns its place: three venues x (search, latest book, history) plus cross-venue bars, screening, backtesting, and session introspection. No obvious filler or duplicate wrappers.
Covers the full read lifecycle for prediction-market data — discovery, live depth, historical snapshots, candles — plus equity/crypto OHLCV and backtest paths, with no destructive operations required for a data feed. Minor asymmetries exist (history depth differs by asset class and venue, no deeper Binance book beyond screener top-of-book), but agents can work around them.
Mid-price path per Polymarket market for backtesting, resampled to a fixed interval and bounded to each market's own lifetime so post-settlement books cannot leak in as risk-free fills. Returns {interval_seconds, markets:{<market_id>:{points:[[ts_ms, price_up, coin_price], …]}}} — up to 1000 points per market. Pass 1 to 50 market ids from polymarket_search_markets. History is bounded by the plan window and the interval floor by plan; both fail closed rather than silently coarsening.
Inputs: ids (required), coin, interval.
OHLCV price bars for US equities and ETFs, Binance spot pairs, and perpetual futures. One minute is the finest resolution; 5Min, 15Min, 1Hour and 1Day are rolled up from it and say so with derived. Spell a crypto pair the way the venue does (BTCUSDT, not BTC) and a perpetual with a .P suffix (BTCUSDT.P) — spot and perp are different instruments at different prices. BTCU, ETHU and WLDU are each both a US ETF and a Binance pair, and resolve to the equity — pass venue=binance to reach the pair instead. Optional venue selects the market explicitly: us-equities, binance (spot) or binance-futures (perpetuals). Bounded by the same plan history window as every other read (403 HISTORY_LIMIT_EXCEEDED past it); the plan also sets how many symbols one request may carry.
Inputs: symbols (required), end_time, timeframe, start_time.
Hourly OHLC candles (yes bid, yes ask, traded price) plus volume and open interest for a Kalshi market. This is the only history that exists for non-crypto Kalshi markets — Kalshi serves no historical order book — and it reaches back up to a year, far past the order-book capture. price is null in periods with no trade. Every account plan; history is bounded by your plan window.
Inputs: ticker (required), limit, cursor, end_time, +2 more.
Latest yes/no order-book depth for a Kalshi market by ticker. Every account plan; only the keyless demo surface is refused.
Inputs: ticker (required).
Historical yes/no depth snapshots for a Kalshi market by ticker. Every account plan; history is bounded by your plan window.
Inputs: ticker (required), fill, limit, cursor, +3 more.
List Kalshi crypto markets (full yes/no depth, DepthFeed-exclusive). Every account plan; the keyless demo surface returns a 402 upsell.
Inputs: coin, type, limit, cursor.
Latest L2 depth (bids desc / asks asc) for a Limitless market by slug. Every account plan; only the keyless demo surface is refused.
Inputs: slug (required).
Historical L2 depth snapshots (time series) for a Limitless market by slug. Every account plan; history is bounded by your plan window.
Inputs: slug (required), fill, limit, cursor, +3 more.
List currently-open Limitless (Base CLOB) markets, DepthFeed-exclusive. Every account plan; only the keyless demo surface is refused.
Inputs: coin, type, limit, cursor.
Paid data plan required. Return every active Polymarket market across all categories, not only crypto. AI execution credits do not unlock this export. The text result is one LLM-readable line per market: MARKET_NAME | OUTCOME PRICES | DEADLINE | MARKET_ID. The sweep fails closed if complete pagination cannot be verified and includes timestamp, count, source-page count, and SHA-256.
Inputs: no named parameters.
Fetch a single Polymarket crypto up/down market by market_id or slug from polymarket_search_markets. Provide exactly one of market_id or slug. Other categories, including weather, use REST discovery at /v3/polymarket/markets with an account plan.
Inputs: coin, slug, market_id.
Historical order-book snapshots for one Polymarket crypto up/down market; use market_id from polymarket_search_markets. Use interval to downsample and include_orderbook for the full ladder. Other categories, including weather, use REST /v3/polymarket/{asset_id}/snapshots with an outcome token asset_id and an account plan. History is subject to plan limits and actual captured data; catalog presence does not guarantee stored snapshots.
Inputs: market_id (required), coin, fill, limit, +5 more.
List Polymarket up/down crypto prediction markets for a coin. Returns market id, slug, window, status and timing. Use the returned id/slug with polymarket_get_market or polymarket_get_snapshots.
Inputs: coin, type, limit, cursor, +3 more.
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Polymarket orderbook history, live books, trades and settlements, plus Hyperliquid perp books.
Live prediction markets: Polymarket + Kalshi prices, odds, order books. Pay-per-call USDC, no key.
Live Polymarket odds, order books, fee-inclusive quotes and non-custodial prediction trading.
Read-only prediction-market data across Kalshi, Polymarket, Limitless: venues, fees, lookups, stats.
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