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Structured public web data APIs for search, maps, geocoding, streaming, travel, real estate, marketplaces, apps, social, audio, crypto, finance, and AI workflows with managed execution and credit-based usage.

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Web Scraping APIFeaturesPlatformsTravel APIsReal Estate APIsPricing
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Google SearchGoogle MapsGoogle TrendsBing SearchAmazonLinkedInApple PodcastsZillowTripAdvisorShopifyAll platforms
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DocsGetting StartedAPI ExamplesPlaygroundSDKsChangelogBlogGitHub
Use cases
SERP MonitoringGoogle Maps LeadsProperty Market IntelligenceAmazon Product MonitoringCrypto Market ResearchAI Agent Web DataAll use cases
Legal
ContactTermsPrivacy
© 2026 Crawlora. All rights reserved.·Built by Tony Wang
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  3. /Prediction Market Data
Normalized JSONAPI-key usage trackingCredit-based pricingPlatform-specific APIsPrediction marketsNon-advisory data

Prediction Market Data API for Polymarket, Kalshi, and Metaculus

Collect structured public records from Polymarket, Kalshi, and Metaculus for research dashboards, forecast tracking, and AI research assistants — without treating Crawlora as a trading feed or investment adviser.

Polymarket APITry PlaygroundView Pricing

Crawlora platform

Structured public web data

01

API-first

Documented endpoints and Playground testing.

02

JSON-first

Normalized records instead of raw HTML parsing.

03

Infrastructure managed

Proxy routing, browser rendering, retries, and scaling controls.

04

Responsible boundaries

Public web data workflows with transparent failure handling.

The problem

Prediction-market research needs repeatable public records, not screenshots or one-off scrapes

Research teams, analysts, and AI workflows often need public prediction-market events, markets, prices, order books, and community forecasts in a structured pipeline. Maintaining that internally means parsing several Polymarket, Kalshi, and Metaculus page and API shapes and handling upstream changes yourself.

Infrastructure

Proxy routing, browser execution, retries, and usage controls are operational work.

Normalization

Raw pages must become stable records before products and data teams can use them.

Product fit

Use-case landing pages should map directly to buyer workflows and internal data models.

Responsible use

Structured public web data workflows still need clear legal, privacy, and platform boundaries.

What you can collect

Structured data categories

Example fields may include public event, market, price, order-book, and forecast fields where supported.

event and market ids, titles, and slugs
outcome prices, midpoints, and spreads
order-book bid and ask levels
volume, liquidity, and open-interest fields
series, tags, sports, and category context
Kalshi exchange schedule and status
Metaculus questions and option labels
community forecast values and history
resolution and timing fields
source URLs and fetch timestamps
request IDs and usage context

Relevant Crawlora APIs

Platform-specific endpoints for this workflow

Start from the platform page or endpoint docs, then test the same route in Playground before production integration.

Polymarket API

Events, markets, prices, order books, tags, sports, leaderboards, and trade activity.

Open

Polymarket markets

Collect public Polymarket market rows for monitoring and research.

Open

Polymarket event detail

Fetch one normalized public Polymarket event.

Open

Kalshi API

Events, markets, series, trades, order books, and historical market data.

Open

Kalshi markets

Collect public Kalshi market rows for prediction-market monitoring.

Open

Kalshi events

Collect public Kalshi event rows and metadata.

Open

Metaculus API

Forecasting questions, community forecasts and history, metadata, and comments.

Open

Metaculus questions

Collect public Metaculus forecasting questions for research workflows.

Open

Example workflow

From target definition to product output

Crawlora keeps the scraping execution layer behind documented APIs so your product can focus on storage, analysis, alerts, and user workflows.

  1. 01

    Define research scope

    Choose events, markets, series, tags, or forecasting questions across Polymarket, Kalshi, and Metaculus.

  2. 02

    Call the endpoints

    Use Crawlora's documented routes with API-key auth and generated Playground examples.

  3. 03

    Normalize snapshots

    Store market rows, prices, order books, forecast values, source URLs, timestamps, and usage context.

  4. 04

    Power research outputs

    Feed dashboards, alerts, reports, and AI assistants with structured public prediction-market records.

API example

Illustrative Polymarket markets request

Illustrative example using the documented Polymarket markets route. Check Docs for current parameters, response fields, and credit costs.

Request

Illustrative example
GET https://api.crawlora.net/api/v1/polymarket/markets?limit=25
x-api-key: YOUR_API_KEY

Illustrative response

Illustrative example
{
  "code": 200,
  "msg": "OK",
  "data": {
    "markets": [
      {
        "id": "0x1234",
        "question": "Example market question?",
        "outcomes": ["Yes", "No"],
        "outcome_prices": [0.62, 0.38],
        "volume": 1284500
      }
    ]
  }
}

What you can build

Products, dashboards, and workflows this data can power

These are practical workflow patterns for SaaS products, data teams, AI agents, agencies, growth teams, and internal intelligence tools.

Prediction-market dashboard

Refresh public event and market rows, outcome prices, and volume/liquidity fields for research views.

Forecast tracker

Collect Metaculus community forecasts and forecast history for tracking and comparison workflows.

Order-book monitor

Collect Polymarket and Kalshi order books, midpoints, and spreads for supported public markets.

Event and tag discovery

Combine search, events, tags, and series across the three platforms for discovery pipelines.

Cross-market research

Compare related public markets and questions across Polymarket, Kalshi, and Metaculus.

AI research assistant

Feed structured public prediction-market records into summaries, watchlists, and internal copilots.

Build or buy

Why not build it yourself?

Custom scrapers can work for prototypes. Production web data workflows need infrastructure, monitoring, stable output, and clear failure behavior.

DIY approachCrawlora approach
Maintain separate scrapers for Polymarket, Kalshi, and Metaculus page and API shapesUse documented endpoints across all three platforms
Normalize many layouts into your own prediction-market schemaReceive structured JSON from generated endpoint docs
Classify blocks, empty pages, and upstream changes yourselfUse documented errors and maintained endpoint behavior
Build request testing, usage metering, and credit costs from scratchUse Playground, API-key usage tracking, and credit-based pricing

Infrastructure

Explore the managed execution layer

Crawlora combines platform-specific APIs with managed proxy routing, browser-backed rendering, retries, rate limits, usage tracking, and scaling controls.

Web Scraping API

Open

Proxy Routing

Open

Browser Rendering

Open

Browser Cluster

Open

Anti-bot Resilience

Open

Challenge Handling

Open

Retry & Fallback

Open

Usage & Billing

Open

Scalable Scraping API

Open

Responsible use

Use structured public web data responsibly

Prediction-market workflows should be limited to responsible public research, monitoring, and dashboard use. Crawlora is not the official Polymarket, Kalshi, or Metaculus API, a broker, investment adviser, exchange, or real-time trading data provider. Data may be delayed, incomplete, or affected by upstream changes. Do not use Crawlora as the sole source for trading, investment, compliance, tax, accounting, or risk decisions. Read Crawlora terms.

Related use cases

More structured web data workflows

Cross-link practical workflows that often share the same data infrastructure and product buyers.

Finance Market Data

Open

Alternative Data

Open

AI Agent Web Data

Open

FAQ

Prediction Market Data FAQ

Answers for developers and product teams evaluating Crawlora for this workflow.

Which platforms does this use case cover?+

It focuses on the Polymarket, Kalshi, and Metaculus platform pages and their documented public endpoint catalogs.

What prediction-market data can I collect?+

The active catalog includes events, markets, prices, order books, midpoints, spreads, series, tags, sports, exchange status, and Metaculus questions and forecasts where supported.

Can I use this for real-time trading?+

No. Crawlora is not a real-time trading data provider and should not be used as the sole source for trading, investment, compliance, tax, accounting, or risk decisions.

Does Crawlora provide investment or forecasting advice?+

No. Crawlora provides structured public web data infrastructure. It does not provide investment advice, forecasting advice, brokerage or exchange services, or trading recommendations.

Can I test these endpoints before integrating?+

Yes. Open each platform page or endpoint-specific Playground pages to inspect parameters, cURL examples, sample JSON, docs links, and credit costs.

Start building with structured public web data

Browse Crawlora APIs, test a request in Playground, and move from scraping infrastructure work to production data workflows.

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