# Changelog of Kalshi & Polymarket Prediction Market Odds Scraper (`scrapebench/kalshi-polymarket-prediction-market-scraper`) Actor

- **URL**: https://apify.com/scrapebench/kalshi-polymarket-prediction-market-scraper/changelog.md
- **Full Actor documentation**: https://apify.com/scrapebench/kalshi-polymarket-prediction-market-scraper.md

## Changelog

### 0.1.0 — 2026-09-07

First release (#156).

- Kalshi read through `/events?with_nested_markets=true`, not `/markets`: on 2026-09-07 the
  markets endpoint returned 25,000 rows of which 24,992 were auto-generated multivariate parlay
  legs, and paging never escapes them. The events tree returns the same exchange with none.
- Kalshi's current field names (`*_dollars`, `*_fp`, decimal strings). The previous names were
  removed upstream; an actor still reading them returns a dataset of nulls.
- A run aborts with a `source_changed` notice if no market carries a recognised price field,
  rather than shipping correctly-shaped rows with no prices.
- Polymarket's JSON-encoded `outcomes` / `outcomePrices` decoded; its offset ceiling (2000)
  reported as a `truncated` notice rather than passed off as the whole exchange.
- Temperature markets parsed into city, settlement station and bracket bounds.