What is PredRadar?
Coverage labels include Polymarket, Kalshi and Betfair, although the live platform counter can show fewer active feeds. Search by venue, topic and market attributes, then open the exact contract before comparing another site’s price.
The pricing FAQ describes REST refreshes every 30–60 seconds. Pro WebSocket support is marked coming soon, and Enterprise stream availability depends on the contract. An extreme displayed gap can reflect stale data or mismatched contracts rather than an executable opportunity.
Who it is for
- Researchers searching several venues at once.
- Users monitoring price changes and closing dates.
- Developers building a lightweight API or MCP monitor.
Features and coverage
- Search and watchlists
Filter aggregated markets by platform, topic and attributes, then keep selected markets together in a watchlist.
- Price-gap scanner
Inspect flagged cross-platform differences and direction labels; validate both contracts, fees and executable depth.
- Movers, calendar and resolved markets
Organize price changes, upcoming deadlines and completed contracts in specialized views.
- Whale and trader activity
Paid tools include a large-trade feed and trader leaderboard.
- Detailed market data
Review historical prices, open interest, liquidity and token fee rates in the deeper market views.
- API, MCP and Enterprise files
Choose daily request allowances by plan, or request historical arbitrage data, bulk files and custom delivery through Enterprise.
Workflows with PredRadar
Find a contract
Search the event, narrow the venue and check the exact contract and closing date.
Review a flagged gap
Compare both rule sets, fees and executable depth. Treat warning-marked extreme gaps as items needing extra investigation.
Build a monitor
Estimate daily request volume and account for the refresh interval before choosing a plan and polling the API.
Pricing and total cost
Public browsing is complemented by paid analytics and custom data delivery. Daily API/MCP limits differ by plan.
Free
$0
- Market aggregation and search
- Basic prices and volume
- API and MCP: 100 requests/day
Pro
$30/month
- Arbitrage scanner and spread alerts
- Whale activity
- Price history and liquidity
- API and MCP: 10,000 requests/day
Enterprise
Custom
- Historical arbitrage data
- CSV/JSON bulk export
- Custom feeds and delivery
Fees and usage costs
- Annual billing advertises a 44% saving; check the total at checkout.
Getting started
Before you start: A displayed gap can be stale or involve mismatched contracts.
- Browse the public market table and select venues and categories.
- Open the exact contract detail and check equivalence before using the gap scanner.
- Register for watchlists or paid tools.
- Review daily API limits and delivery conditions before integrating.
The FAQ describes 30–60-second REST refreshes; Pro WebSocket support is still labeled coming soon.
Useful links
What to check
- A displayed gap can be stale or involve mismatched contracts.
- Coverage labels and the number of currently active feeds can differ.
- Pro WebSockets are planned, not established as available.
- Enterprise stream delivery depends on contractual terms.
A closer look
Ratings & reviews
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Related tools
Browse categoryFrequently asked questions about PredRadar
What does the free tier include?
Market search, basic detail and a daily API/MCP allowance of 100 requests.
How often does the data refresh?
The pricing FAQ specifies 30–60-second REST polling. Pro WebSocket support is labeled coming soon.
Is every displayed gap tradable?
No. Inspect contract equivalence, fees and executable depth; stale or mismatched data can produce extreme gaps.
Can I obtain bulk exports?
Enterprise lists CSV/JSON bulk exports, historical arbitrage data and custom feeds or delivery.


