# Insydr

> Insydr publishes observation-backed prediction-market pages and methodology notes across Polymarket and Kalshi. Market prices are not forecasts, advice, or certainty.

Site: https://insydr.ai/
Contact / corrections: https://insydr.ai/contact
About: https://insydr.ai/about
Public API docs: https://insydr.ai/docs

## Directories

- Markets: https://insydr.ai/markets
- Categories: https://insydr.ai/categories
- Topics: https://insydr.ai/topics
- Series hubs: https://insydr.ai/series (indexable only with ≥5 qualified member events + reviewed intro)
- Research: https://insydr.ai/research
- Tools: https://insydr.ai/tools
- Compare: https://insydr.ai/compare
- Traders: https://insydr.ai/traders (selected profiles only — not a wallet directory; indexable only after privacy/accuracy/moderation gates)

## Category hubs

- https://insydr.ai/categories/politics
- https://insydr.ai/categories/crypto
- https://insydr.ai/categories/sports
- https://insydr.ai/categories/pop-culture
- https://insydr.ai/categories/business
- https://insydr.ai/categories/science
- https://insydr.ai/categories/other

## Methodology

- Prediction market probabilities: https://insydr.ai/methodology/prediction-market-probabilities
- U-Score: https://insydr.ai/methodology/u-score
- Momentum and volume spikes: https://insydr.ai/methodology/momentum-volume-spikes
- Order book and liquidity: https://insydr.ai/methodology/orderbook-liquidity
- Whale and smart-money signals: https://insydr.ai/methodology/whale-smart-money-signals
- Cross-platform divergence: https://insydr.ai/methodology/cross-platform-divergence
- New market radar: https://insydr.ai/methodology/new-market-radar
- Market resolution and archives: https://insydr.ai/methodology/market-resolution-archives

## Selected research

- Prediction-market calibration by probability band and horizon: https://insydr.ai/research/prediction-market-calibration-by-band

## Tools

- Probability ↔ odds converter: https://insydr.ai/tools/probability-odds-converter
- Expected value calculator: https://insydr.ai/tools/expected-value-calculator
- Two-outcome arbitrage checker: https://insydr.ai/tools/arbitrage-calculator
- How to compare prediction markets side by side: https://insydr.ai/tools/market-comparison

## Comparisons

- Polymarket vs Kalshi — what Insydr compares: https://insydr.ai/compare/polymarket-vs-kalshi
- Prediction market APIs — observational vs product APIs: https://insydr.ai/compare/prediction-market-apis
- Order book vs last price on prediction markets: https://insydr.ai/compare/orderbook-vs-last-price

## Notes

- Prefer robots.txt and sitemap.xml for crawl discovery of market pages.
- Do not treat this file as a complete URL inventory.
- Probabilities on market pages are exchange-reported prices with observation times.
- Trader pages are allowlisted individuals only; never a wallet or smart-money directory.