Polymarket Prediction Market Scraper
Pricing
from $22.50 / 1,000 results
Polymarket Prediction Market Scraper
Scrapes Polymarket prediction markets by search query, category slug, or volume threshold. Returns each market as a flat row with prices, volume, liquidity, and optional CLOB orderbook depth.
Pricing
from $22.50 / 1,000 results
Rating
0.0
(0)
Developer
ParseForge
Maintained by CommunityActor stats
0
Bookmarked
9
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0
Monthly active users
9 days ago
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Polymarket Prediction Market Scraper
Scrape Polymarket prediction market data by search term, category, or volume, up to a million markets per run. Every market comes with its prices, volume, liquidity, and optional orderbook depth. No API key required. Export to CSV, JSON, Excel, or XML.
Polymarket's public API is rate-limited and returns paginated results that are hard to join across events and markets. This Actor reads the full market catalog directly, filters by category, status, volume, liquidity, and date range, and returns each match in one fixed schema. It works for traders tracking odds shifts, researchers building datasets, and anyone who needs clean prediction-market data without writing their own collector.
| Who uses it | What they scrape Polymarket for |
|---|---|
| Prediction market traders | Monitor odds shifts and volume spikes across hundreds of markets in real time. |
| Quantitative researchers | Build historical datasets of event probabilities, trading volume, and liquidity for backtesting. |
| Crypto analysts | Track which narratives and tokens are attracting the most betting volume on Polymarket. |
| Newsrooms and journalists | Pull current event odds to report on what the market believes will happen next. |
What it does
This Actor collects Polymarket prediction markets by search query, category slug, or volume threshold, and returns each one as a flat row with prices, volume, liquidity, and optional CLOB orderbook depth.
- 📋 Two scrape modes: Events returns one record per event with all child binary markets nested inside. Markets returns one row per individual binary question, so you can pivot on single Yes/No outcomes.
- 🏷️ Category and status filters: Narrow results to politics, sports, crypto, AI, or any of the 1,000+ supported category slugs. Filter by active, closed, or archived status.
- 📊 Volume and liquidity thresholds: Set minimum total volume or minimum liquidity in USDC so only the most traded markets reach your dataset.
- 📅 Date range filters: Limit results to markets that start or end within a chosen window, useful for tracking event-driven trading.
- 📖 Optional orderbook depth: Toggle on full CLOB orderbook bids and asks for every outcome token. One extra HTTP call per token, off by default.
Results export to CSV, JSON, Excel, or XML, or straight from the API.
What you can do with Polymarket data
📈 Monitor real-time odds shifts.
A trader runs the Actor every 15 minutes on a handful of political category slugs, exports the CSV, and spots which candidate markets are moving before the news breaks.
🧪 Build a research dataset.
A data scientist scrapes all closed markets for the past year with minVolume set to 50,000 USDC, then trains a model on how probabilities evolved over time.
📰 Power a newsroom dashboard.
A journalist pulls active markets filtered to the geopolitics category, sorts by 24-hour volume, and publishes a daily roundup of what the market expects.
🔍 Find arbitrage opportunities.
A quant enables orderbook depth, scrapes multi-outcome events, and computes fee-adjusted basket returns to identify mispriced legs.
Why choose this scraper
| What you get | |
|---|---|
| No API key | Reads public Polymarket endpoints directly. No registration, no OAuth, no rate-limit headaches. |
| Two output shapes | Choose Events mode for grouped event-level records or Markets mode for one row per binary question. |
| Full CLOB data | Optional orderbook depth with bids and asks for every outcome token, pulled on demand. |
| Sort and cap | Sort by volume, liquidity, open interest, price change, or date, then cap at the number of markets you need. |
How it compares
This Actor focuses on raw market data with flexible filtering and optional orderbook depth, while the competitors below target specific arbitrage workflows or lighter data snapshots.
| Feature | ParseForge | Polymarket Scraper | $1 / 1k | Fast & Reliable | Polymarket + Kalshi Arbitrage Finder | Polymarket Multi-Outcome Arbitrage Scanner |
|---|---|---|---|---|
| Full CLOB orderbook depth (bids and asks) | Yes, optional per-outcome-token fetch | Not listed | Not listed | Not listed |
| Events mode with nested child markets | Yes, one record per event with markets array | Not listed | Not listed | Not listed |
| Category filtering by 1,000+ slugs | Yes, multi-select from full Polymarket category list | Not listed | Not listed | Not listed |
| Volume and liquidity thresholds | Yes, minVolume and minLiquidity filters | Not listed | Not listed | Not listed |
| Date range filters (start and end date) | Yes, four datepicker fields | Not listed | Not listed | Not listed |
| Cross-platform arbitrage detection | Not listed | Not listed | Yes, Polymarket vs Kalshi | Not listed |
| Multi-outcome mathematical arbitrage scanning | Not listed | Not listed | Not listed | Yes, fee-adjusted basket returns |
Configure the run
Drive the Actor from a free-text search query, one or more category slugs, or leave everything blank to pull the full Polymarket catalog ordered by 24-hour volume. Filters run as each market is read so only matches reach your dataset. The Input tab lists every parameter.
A first run with the defaults:
A larger pull:
Pricing
Pay-per-result: $0.054 per result collected. You pay only for the results written to your dataset.
| Results collected | Approximate cost |
|---|---|
| 100 results | $5.40 |
| 1,000 results | $54.00 |
| 10,000 results | $540.00 |
New Apify accounts start with $5 in free credit.
Free users
Free-plan runs return up to 10 results as a preview. Upgrade your Apify plan to collect up to 1,000,000 results per run.
Run it
- Create a free Apify account with $5 in credit.
- Open the Polymarket Prediction Market Scraper.
- Set your inputs and any filters, then click Start.
- Export the results as CSV, Excel, JSON, or XML from the Dataset tab.
Run it programmatically through the Apify API (run-sync-get-dataset-items) or the ApifyClient for JavaScript and Python.
Use with AI agents (MCP)
Give an AI agent live access to Polymarket through the Model Context Protocol. Add the Actor to Claude, Cursor, or any MCP client:
Then prompt it in plain language to run the scraper and read back the results.
Troubleshooting
Why am I getting no results?
Check your filters. If you set a high minimum volume or liquidity threshold, or picked a narrow date range, you may be excluding all markets. Try relaxing the filters or setting Status to All to see if closed markets appear.
Why is the run slow when I enable orderbook depth?
Orderbook depth adds one extra HTTP request per outcome token. A single event with 10 binary markets can mean 20 extra calls. Disable this option unless you need the full bids and asks.
Why do I see fewer results than my maxItems setting?
The Actor stops when it has collected maxItems matches that pass your filters. If Polymarket has fewer matching markets than your limit, you will get everything available. Try broadening your search or removing category filters.
Why are some markets missing fields like volume or liquidity?
Polymarket sometimes returns null or zero for fields on brand-new or very thin markets. This is expected. Use the minVolume or minLiquidity filters to exclude them.
Why do I get an error about invalid category slugs?
The category slug list is pre-loaded from Polymarket. If a slug has been renamed or removed, the API may reject it. Try removing the slug and re-running, or leave categories blank to pull everything.
Can I scrape markets that are not in English?
Polymarket primarily lists markets in English, but some event titles may include other languages. The search query and category filters work on the raw text Polymarket provides.
FAQ
| Question | Answer |
|---|---|
| Do I need a Polymarket API key to use this Actor? | No. This Actor reads the same public endpoints your browser hits when you visit polymarket.com. No registration, no API key, no OAuth flow. |
| What is the difference between Events mode and Markets mode? | Events mode returns one record per prediction-market event, with all its child binary markets nested inside an array. Markets mode flattens everything so each binary Yes/No question gets its own row. Use Events for grouped analysis and Markets for row-level pivoting. |
| How do I filter by a specific category like politics or sports? | Use the Categories multi-select input. You can pick one or more slugs such as politics, sports, crypto, geopolitics, ai, or economy. The Actor will return only markets tagged with those categories. |
| Can I scrape only markets with high trading volume? | Yes. Set the Minimum total volume (USDC) or Minimum liquidity (USDC) fields. Markets below your threshold are skipped before they reach your dataset. |
| What does the orderbook depth option do? | When enabled, the Actor fetches the full CLOB order book for every outcome token in every market. You get arrays of bids and asks with price and size. This adds one HTTP call per token, so it is off by default. |
| How many markets can I scrape in one run? | You can set the Maximum markets field up to 1,000,000. The Actor respects the limit and stops once it has collected that many matches. |
| Can I search for markets by keyword? | Yes. The Search term field does a free-text search across event and market titles. Leave it blank to browse the full catalog. |
| What export formats are supported? | Like every Apify Actor, you can export your dataset to CSV, JSON, Excel, XML, or push it directly to a webhook, S3 bucket, or database. |
| Does this Actor handle closed or resolved markets? | Yes. Set the Status filter to Closed (resolved), Archived, or All to pull historical markets. Active is the default. |
| Can I sort results by something other than 24-hour volume? | Yes. The Sort by dropdown lets you order by total volume, liquidity, open interest, price change over various windows, start date, end date, or creation date. |
| Is this Actor suitable for arbitrage scanning? | It collects the raw data you would need, including optional orderbook depth. You can feed the output into your own arbitrage logic, but this Actor does not compute arbitrage opportunities itself. |
| How often should I run this Actor? | That depends on your use case. Traders often run it every 5 to 15 minutes on a schedule. Researchers building historical datasets may run it once a day or once a week. |
Related actors
Browse the full ParseForge collection for more scrapers.
🆘 Need help? Email parseforge@protonmail.com with your run ID, your input, and what you expected.
⚠️ Disclaimer. This Actor is unofficial and is not affiliated with, endorsed by, or sponsored by Polymarket. It collects only publicly available data. You are responsible for using the collected data in compliance with the source's terms of service and applicable data-protection laws, including GDPR, CCPA, and PIPL. Do not use it to collect personal data unlawfully.
