> Markdown version of [/tools/marketlens](https://launchpoly.com/tools/marketlens) — served by LaunchPoly, the #1 Polymarket tools directory. [Back to Tools](/tools) ![Marketlens](/_next/image?url=https%3A%2F%2Fulueyulgndpwxivsvcbk.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Ftool-images%2Ftools%2Fmarketlens%2Flogos%2Frebuilt.png&w=2048&q=75&dpl=dpl_CUj6TDZDZFqzqr1idfm4yEi2e55Q) # Marketlens The historical data and backtesting API for Polymarket. [ Trading ](/category/trading)[ Data & APIs ](/category/data)[ Developer Tools ](/category/api) api web Freemium ![Marketlens screenshot 1](/_next/image?url=https%3A%2F%2Fulueyulgndpwxivsvcbk.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Ftool-images%2Ftools%2Fmarketlens%2Fscreenshots%2Frebuilt-1.png&w=2048&q=75&dpl=dpl_CUj6TDZDZFqzqr1idfm4yEi2e55Q) Click to expand [Visit Website](https://marketlens.trade/) Upvote(2) Share ### Promote this tool Pay with card or SOL · instant activation $15 Boost 5 days featured on the homepage + Trending badge — climbs the live Trending board Boost Marketlens ◎or pay with SOL BEST IMPACT $69 Launch Package 10 days featured + top of Trending + SEO article + social post Get Launch Package ◎or pay with SOL [More options — homepage banner ad, enhanced profile](/pricing#addons) Payments promote **Marketlens** on LaunchPoly. One-time · Card or crypto · Instant activation. ## About Marketlens Marketlens is a historical data and backtesting API covering roughly 4,000 live Polymarket markets, including 5-minute crypto up/down windows, monthly options strikes, per-game sports markets, and daily weather buckets across cities in the Americas, Europe, and Asia-Pacific. It records every order book at tick resolution, providing L2 snapshots and deltas, trades, and candles. A Python SDK offers auto-paginating iterators, DataFrame output, and bulk Parquet exports, and data can be streamed from the API or run fully offline from a downloaded export. The backtesting engine replays strategies against real historical book depth at millisecond resolution, modeling queue priority, latency, slippage, and fill realism rather than idealized fills. It also includes a bar-cadence mode where a strategy declares target exposures per signal and the engine trades toward them, along with tools for extracting implied probability distributions and survival curves from multi-outcome markets. The tool is aimed at people building or testing Polymarket trading bots and quantitative strategies who need real order book depth rather than just price history. Data collection is checked against CLOB ground truth with automatic reseeding on drift and redundant connections. Pricing is freemium: a free tier (180 requests/minute, 5M events/day, 1 API key) requires no card, with paid Pro ($39/month, 3,600 req/min, 5B events/day, 5 keys) and Enterprise ($199/month, 10,800 req/min, unlimited events/day, 25 keys) tiers for heavier use. The SDK is open source on GitHub, and the data can also be accessed through an MCP server for agent-based workflows. Marketlens is a freemium trading tool built for Polymarket traders — The historical data and backtesting API for Polymarket. It is listed in the LaunchPoly directory, where it was added on August 2, 2026 and currently has 2 community votes this week. Marketlens records every Polymarket order book at tick resolution. You get L2 snapshots and deltas, trades, and candles across ~4,000 live markets. Coverage spans Polymarket's recurring markets: 5-minute crypto up/down windows, monthly options strikes, per-game sports markets, and daily weather buckets. The Python SDK ships clients with auto-paginating iterators, DataFrame output, and bulk Parquet exports. The backtesting engine replays strategies against real book depth. Queue priority, latency, slippage, and fill realism are all modeled. For alpha research there is a bar-cadence mode: declare target exposures per signal and the engine trades to them. Data streams from the API, or runs fully offline from a downloaded export. Free tier included, no card required. ## Marketlens at a glance Category Trading, Data & APIs, Developer Tools Pricing freemium Platforms api, web Votes this week 2 Listed August 2, 2026 Last updated September 9, 2026 ## Frequently asked questions about Marketlens ### What is Marketlens? Marketlens is a freemium trading tool for Polymarket. The historical data and backtesting API for Polymarket. ### Is Marketlens free to use? Marketlens is freemium: there is a free tier, with paid plans for advanced features. ### What category does Marketlens belong to? Marketlens is listed under Trading, Data & APIs, Developer Tools on LaunchPoly's Polymarket tools directory. ### How is Marketlens ranked on LaunchPoly? Marketlens is ranked by community votes from real Polymarket traders. Votes reset every Sunday, and it currently has 2 votes this week. ## Links & Resources [GitHub](https://github.com/marketlenstrade/marketlens-python)[X](https://x.com/marketlenstrade)[Documentation](https://marketlens.trade/docs)[Get featured free](/tools/marketlens/badge) Report ## More like this [Browse all Trading](/category/trading) [ ![Nevua Markets](/_next/image?url=https%3A%2F%2Fulueyulgndpwxivsvcbk.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Ftool-images%2Ftools%2Fnevua-markets%2Flogos%2Frebuilt.png&w=2048&q=75&dpl=dpl_CUj6TDZDZFqzqr1idfm4yEi2e55Q) ### Nevua Markets Real-time alerts and market intelligence for traders 37 votes ](/tools/nevua-markets)[ ![Polyfollow](/_next/image?url=https%3A%2F%2Fulueyulgndpwxivsvcbk.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Ftool-images%2Ftools%2Fpolyfollow%2Flogos%2Frebuilt.png&w=2048&q=75&dpl=dpl_CUj6TDZDZFqzqr1idfm4yEi2e55Q) ### Polyfollow Pro-level Polymarket copy trading with zero latency 37 votes ](/tools/polyfollow)[ M ### MIRA AI-enhanced prediction market analysis and insights 31 votes ](/tools/mira) ## Related guides [All guides](/blog) [ ### Top 10 Polymarket Trading Strategies That Actually Work (2026) Master these proven trading strategies to maximize your returns on Polymarket. From arbitrage to sentiment analysis, learn how the pros trade. ](/blog/polymarket-trading-strategies-2025)[ ### How to Make Money on Polymarket: A Realistic Guide Most Polymarket traders lose money. Here's what separates the ones who don't — the actual edge sources, strategies that work, and common mistakes that drain bankrolls. ](/blog/how-to-make-money-on-polymarket)[ ### Polymarket Bot vs Manual Trading: Which Actually Wins? Bots are sold as the path to consistent Polymarket profit. The data on actual trader outcomes is more honest than the marketing. ](/blog/polymarket-bot-vs-manual-trading) ![Marketlens](/_next/image?url=https%3A%2F%2Fulueyulgndpwxivsvcbk.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Ftool-images%2Ftools%2Fmarketlens%2Flogos%2Frebuilt.png&w=2048&q=75&dpl=dpl_CUj6TDZDZFqzqr1idfm4yEi2e55Q) Marketlens 2 Boost $15◎or SOL [Visit](https://marketlens.trade/)