🗳️ PredictIt Markets Scraper

🚀 Export every active PredictIt prediction market in seconds, with all contracts, last trade prices, and best buy/sell quotes, straight from the public predictit.org marketdata feed.

🕒 Last updated: 2026-05-29 · 📊 12 fields per record · All active PredictIt markets · Political prediction trading

The PredictIt Markets Scraper pulls the full PredictIt market book in one call, flattening each market with its nested contracts, prices, and quotes into clean structured records.

🎯 Target Audience	💡 Primary Use Cases
🗳️ Political analysts	Track election odds
📊 Forecasters	Compare vs Polymarket / Kalshi
🏢 Hedge funds	Event-driven trading signals
🤖 ML researchers	Build forecasting datasets
📰 Journalists	Real-time event probabilities
👩‍💻 Developers	Mirror PredictIt locally

📋 What the PredictIt Markets Scraper does

• Calls https://www.predictit.org/api/marketdata/all/.
• Flattens every market with its contracts and quotes.
• Optionally filters by market name substring.
• Exports as CSV, Excel, JSON, JSONL, XML, RSS, or HTML.

💡 Why it matters: PredictIt is one of the longest-running US prediction markets. Their public feed is the source of truth for political odds reporting.

🎬 Full Demo

🚧 Coming soon.

⚙️ Input

Field	Type	Required	Description
maxItems	integer	No	Free 10, paid up to 1M.
nameContains	string	No	Substring on market name.

Example 1:

{ "maxItems": 10 }

Example 2:

{ "nameContains": "president" }

⚠️ Good to Know: The PredictIt marketdata feed is fully public. No key required.

📊 Output

Field	Type	Description
🖼️ imageUrl	string	Market image.
🆔 market_id	number	PredictIt market ID.
📛 name	string	Full market name.
🔖 short_name	string	Short label.
🔗 url	string	Public URL.
🟢 status	string	Market status.
📜 contracts	array	All contracts with prices.
💲 last_trade_price	number	First contract last trade.
🟩 best_buy_yes	number	First contract best buy yes.
🟥 best_sell_yes	number	First contract best sell yes.
🕒 scrapedAt	string	When fetched.
❌ error	string	Error if upstream failed.

Sample record:

{
  "imageUrl": "https://predictit.org/image.png",
  "market_id": 7456,
  "name": "Who will win the 2028 US presidential election?",
  "short_name": "2028 POTUS",
  "url": "https://www.predictit.org/markets/detail/7456",
  "status": "Open",
  "contracts": [{ "id": 1, "name": "Candidate X", "last_trade_price": 0.32 }],
  "last_trade_price": 0.32,
  "best_buy_yes": 0.33,
  "best_sell_yes": 0.31,
  "scrapedAt": "2026-05-29T13:00:00.000Z",
  "error": null
}

✨ Why choose this Actor

| 🆓 | Public PredictIt feed, no key. | | 🗳️ | Full market book in one call. | | 🔢 | Numeric casting on every price. | | 🛟 | Errors surfaced cleanly. | | 🔌 | Name substring filter. | | 💾 | CSV / Excel / JSON / XML / RSS / HTML. |

📈 How it compares to alternatives

Approach	Setup	Numeric cast?	Filter?	Errors?
Raw fetch	15 min	❌	❌	❌
Custom parser	30+ min	partial	partial	partial
This Actor	5 sec	✅	✅	✅

🚀 How to use

1. Click Try for free.
2. Optional nameContains filter.
3. Click Start.

💼 Business use cases

📊 Election odds dashboards. Build live dashboards for news desks.

💼 Hedge fund signals. Trade event-driven baskets.

📰 Newsroom. Verify probability claims in stories.

🤖 ML. Build forecast training sets.

🔌 Automating PredictIt Markets Scraper

• Make / Zapier to Airtable / Slack.
• Cron schedule native Apify.
• Webhooks on completion.
• Pipe to BigQuery / Snowflake / Postgres.

🌟 Beyond business use cases

🎓 Education. Teach forecasting / Bayesian inference.

🧪 Personal research. Track your favourite markets.

🤝 Open data. Public political odds dashboards.

🧰 Prototyping. Quick feed.

🤖 Ask an AI assistant about this scraper

Drop this README into ChatGPT or Claude.

❓ Frequently Asked Questions

❓ API key? None.

❓ Refresh? Per-call snapshot.

❓ Filter? Yes, by name substring.

❓ Cast? Yes.

❓ Errors? Clean {error} record.

❓ Schedule? Yes.

❓ API or scraping? Public marketdata feed.

❓ Schema stable? Yes.

❓ Formats? CSV, Excel, JSON, JSONL, XML, RSS, HTML.

❓ Coverage? All active PredictIt markets.

🔌 Integrate with any app

Apify integrations with Make, Zapier, Slack, Discord, Google Drive, Google Sheets, Gmail, Airbyte, Keboola, Telegram, GitHub, REST/webhook.

🔗 Recommended Actors

Actor	What it does
ParseForge Metaculus Questions Scraper	Forecasting questions.
ParseForge The Odds API Sports Scraper	Sports betting markets.
ParseForge Stocktwits Trending Symbols Scraper	Retail sentiment.
ParseForge Alpha Vantage Public Scraper	Stocks, FX, crypto.

💡 Pro Tip: browse the complete ParseForge collection for 900+ scrapers.

---

Disclaimer: This actor scrapes only publicly available data. ParseForge is not affiliated with, endorsed by, or sponsored by any of the third-party services referenced. Users are responsible for complying with the target site's terms of service and applicable law. Create a free account w/ $5 credit.