polymarket-historical-data
Free Polymarket historical data: order books, trades and outcomes for 2,278 markets across 7 events (Bitcoin 5 minute markets, MLB, the World Cup final, UFC 330, Counter-Strike, weather, Apple), Parquet and CSV, backtestable with the marketlens Python SDK. Full archive at marketlens.trade
Details
- External ID
- 1367163041
- Source
- GITHUB
- Company
- —
- Product
- polymarket-historical-data
- Website domain
- marketlens.trade
- Launched
- Sept. 12, 2026
- Cohort
- —
- Upvotes
- 7
- Upvotes percentile
- 0.05976172175249808
- Tags
- backtesting, csv, dataset, finance, historical-data, market-data, open-data, order-book, parquet, polymarket, prediction-markets, python
- Fetched at
- Sept. 16, 2026, 1:18 a.m.
- Updated at
- Sept. 16, 2026, 1:18 a.m.
Enrichment
- Theme
- financial intelligence and trading tools
- Vertical
- Fintech
- Function
- Data infrastructure
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- historical order book and trade datasets for prediction market traders
- Manually corrected
- False
Could you build this?
Partial The client SDK and basic CSV/Parquet viewer are easy to vibe code, but scraping, streaming, storing, and continuously normalizing massive high-frequency L2 order book data across thousands of markets is a heavy data engineering task.
What it would actually take: A working system requires a distributed ingestion cluster maintaining persistent WebSocket connections to Polymarket/CLOB endpoints, handling reconnects, sequence deduplication, and parsing high-throughput order book snapshots and diffs. The backend requires columnar storage (e.g., DuckDB, ClickHouse, Apache Parquet on S3) optimized for petabyte-scale historical time-series queries, requiring solid data infrastructure engineering.
Competitors
Other products that read as similar to this one — 106 launches clear the similarity bar, closest 8 shown.
Attention rank: #107 of 107 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 318 days after the earliest competitor.
- PredictionMarkets.tools · ph · 2026-09-28 · 1 upvotes · similarity 0.48
- GhostLeg · ph · 2026-09-16 · 3 upvotes · similarity 0.48
- Predictefy · ph · 2026-09-30 · 1 upvotes · similarity 0.45
- synpath · github · 2026-09-28 · 26 upvotes · similarity 0.43
- TLDR.Market · hn · 2025-12-22 · 5 upvotes · similarity 0.43
- FanPredikt · ph · 2026-09-30 · 2 upvotes · similarity 0.43
- Prediction Market Data Aggregate · hn · 2025-11-14 · 5 upvotes · similarity 0.42
- market-echo · github · 2026-09-13 · 29 upvotes · similarity 0.42
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a data infrastructure tool for Media & entertainment yet.