| What it does | Open-source components for trading screens, charts, order entry, and price boards
| Data and simulation layer for prediction markets on Kalshi and Polymarket
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Open source
| Freemium
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| Pricing | Not given
| Free ($0/month) with 60-second delay on live data, 60 API requests/minute, 1 concurrent stream, 5 subscriptions, 20 sim runs/month; Builder ($49/month) with 10-second delay, 600 requests/minute, 5 streams, 25 subscriptions, 100 sim runs/month; Standard ($199/month) with 2-second delay, 3,000 request
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| Key features | - 18 chart types with Canvas 2D or WebGL rendering
- 134 technical indicators
- 69 drawing tools including trend lines and Fibonacci
- Complete trading widget with watchlists and position tracking
- Realtime price board supporting 1,000 symbols at 30,000 ticks per second
- Order flow visualization with liquidity heatmap
- Mobile-responsive design with touch gestures
- Bar replay and paper trading
- Support for TypeScript, React, Vue and Svelte
- Works with any exchange
| - Order-book history with outcomes and rules for every market on Kalshi and Polymarket
- Live context synchronized on one clock: speech, official text and data releases
- Simulator with venue's real fees and timing for backtesting
- Full REST, WebSocket and SSE access with signed webhooks
- Python and TypeScript SDKs and CLI for programmatic access
- MCP server with phrase and market subscription tools
- Fair-value and live probability models for markets
- Signed receipts and provenance reports for evidence
- Paper trading mode on live record before switching to real exchange keys
- Timestamped facts for resolved market outcomes with speaker attribution
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| What makes it different | - No third-party runtime dependencies
- Headless chart at 176 KB gzipped
- Processes live ticks into indicators in microseconds
- MIT licensed and free for any market
- Performance tested: 1 million bars panned at 60 fps
| - Synchronized context on the same clock: order books, market rules, and every speech or data release that moves prices
- Speaker attribution and verdict for each phrase: whether it counts under market rules
- Live recording of order books for every open market rolling out
- No trading signals: users control all decisions and trades with their own exchange keys
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 10 | 0 |
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| Referring domains (Majestic) | 1 | 0 |
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TradeCanvas
Langbot