Prediction market trading terminal.
Launch terminalA live trading desk interface for Kalshi and Polymarket event contracts. Stream prices, inspect candlestick charts, read orderbook depth, and move from discovery into execution-aware workflows — all over the same data layer that powers the SimpleFunctions API, CLI, and agents.
Markets
Kalshi and Polymarket event contracts in one streaming watchlist.
Charts
Candlestick history, step-line, event mode, and live last-trade marker.
Orderbook
Top-of-book bids, asks, depth bars, spread, and midpoint.
Workflow
From inspection into venue links and execution-aware tools.
Built for prediction market operators.
SimpleFunctions Terminal is not a generic charting screen. It is built around event contracts, cents pricing, venue metadata, orderbook depth, market context, and trading workflows.
For desks that need more than venue tabs.
Use the web terminal for human inspection, the API for systems, and the CLI for scriptable workflows. The product surfaces are connected, not separate demos.
How to use the terminal
Four moves from a cold open to a routed order. Each step maps to one panel in the terminal — search, watchlist, chart, orderbook.
Step 1
Open the terminal
Visit app.simplefunctions.dev. The web terminal loads with a default watchlist of active Kalshi and Polymarket event contracts. No install, no account required to inspect markets.
Step 2
Search a market
Press ⌘K to open the search palette and type a query — by event, ticker, or category. Filter to Kalshi (K), Polymarket (P), or both. Pin markets with the star to add them to your watchlist.
Step 3
Inspect the chart
Pick a market in the watchlist to load the chart panel. Switch timeframe (1m, 5m, 15m, 1h, 1d) and chart mode (candles, step, event, quote). The OHLC row shows live last, open, high, low, close, and volume.
Step 4
Read the orderbook
The right panel shows live bids and asks with cumulative depth bars, spread, and midpoint. Use it to size entries, gauge liquidity, and watch for level changes before routing an order at the venue.
What the terminal owns
The terminal is the human surface over the same market state used by SimpleFunctions APIs and agents. Streaming prices, depth, history, and venue metadata land here first.
Market watchlist
Streaming list of Kalshi and Polymarket event contracts with live cents prices, 24h change, venue badges, and pinned favorites.
Candlestick charts
Multi-timeframe price history with auto-resolution, candles, step-line, event mode, and live last-trade marker.
Live orderbook
Top-of-book bids and asks, cumulative depth bars, bid-ask spread, midpoint price, and update freshness.
Contract context
Title, venue, ticker, last price, close time, volume, and full contract metadata without leaving the terminal.
Terminal versus API versus CLI
Trading terminal
Human operators inspecting markets, candles, depth, context, and venue metadata
visual workspace
Prediction Market API
Agents, dashboards, internal systems, data pipelines, and structured state consumers
JSON
Kalshi CLI
Local automation, scriptable search, terminal workflows, and runtime operations
commands and JSON
Execution workflows
Intent, trigger, status, monitoring, and handoff logic
auditable workflow state
FAQ
What is a prediction market trading terminal?
A prediction market trading terminal is a trader-facing interface for searching event contracts, viewing live prices in cents, inspecting orderbook depth and spread, reading contract context, and monitoring markets before routing orders through venue or workflow systems. SimpleFunctions Terminal is built specifically for Kalshi and Polymarket event contracts.
Does SimpleFunctions Terminal support Kalshi?
Yes. The terminal is built around Kalshi market discovery, contract pages, prices in cents, volume, candlestick chart history, depth-of-book bids and asks, contract metadata, close times, and links back to venue workflows where applicable.
Does it include Polymarket?
Yes. SimpleFunctions infrastructure normalizes Kalshi and Polymarket into the same market schema across API surfaces. The terminal is the visual trading surface over that combined market universe, with venue-aware contract metadata, condition-id resolution, and per-venue depth.
How real-time is the data?
The terminal streams from the same backend that powers SimpleFunctions APIs and agents. Active-market depth refreshes every few seconds, watchlist prices refresh every 25 seconds, and per-market candle history is cached and revalidated stale-while-revalidate. Polling pauses when the tab is hidden to avoid wasted requests.
Is this the same as the SimpleFunctions API?
No. The /prediction-market-api endpoint returns machine-readable market state for agents and systems. The trading terminal is the human operator surface — chart, watchlist, orderbook, contract panel — built on top of that same data layer.
What does the orderbook show?
The orderbook panel shows top-five bids and top-five asks in cents per contract, with cumulative depth bars, the bid-ask spread, midpoint price, and last update timestamp. Levels animate on update so the trader sees liquidity move.
Does SimpleFunctions provide brokerage or investment advice?
No. SimpleFunctions is not a broker, exchange, custodian, FCM, or investment adviser. The terminal is software for market information, workflow context, and operator inspection. All trading happens at the underlying venues.
How do I open the terminal?
Click "Launch terminal" at the top of this page or visit app.simplefunctions.dev directly. The terminal runs in the browser — no install required.
Related surfaces
Prediction Market API
Machine-readable market state for agents and systems.
Kalshi CLI
Command-line workflows for prediction market operators.
Prediction Market Execution
Intent, trigger, routing, and monitoring workflows.
Prediction Market Data
Kalshi and Polymarket data surfaces for research and products.
Prediction Market Index
Market-wide disagreement, risk, breadth, and activity.
Market Universe Browser
Search Kalshi and Polymarket event contracts.
Probability Index
Liquidity-weighted probabilities across venues, refreshed every 15 min.
Institutional Infrastructure
Custom data and workflow infrastructure for desks.