# Polymarket & Kalshi Odds Scraper (`ahmed-data-tools/polymarket-kalshi-odds-scraper`) Actor

Get live odds, implied probabilities, prices, volume and liquidity from Polymarket and Kalshi in one unified dataset. Filter by keyword, category and volume. No API key needed.

- **URL**: https://apify.com/ahmed-data-tools/polymarket-kalshi-odds-scraper.md
- **Developed by:** [ahmed abdelmenem](https://apify.com/ahmed-data-tools) (community)
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $2.00 / 1,000 market results

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## Prediction Markets Scraper: Polymarket + Kalshi Odds API

Get **live odds, implied probabilities, prices, volume and liquidity** from **Polymarket** and **Kalshi** in one clean, unified dataset. No API keys, no login, no coding.

Use it to track elections, crypto price markets, Fed decisions, sports, AI and tech events, and compare what both markets think about the same question.

### What you get

One row per market, with the **same fields for both platforms**:

| Field | Example |
|---|---|
| `platform` | `polymarket` / `kalshi` |
| `title` | Will the price of Bitcoin be above $90,000 on October 7? |
| `impliedProbabilityPct` | `93.7` |
| `yesPrice` / `noPrice` | `0.937` / `0.063` |
| `bestBid` / `bestAsk` / `lastPrice` | `0.93` / `0.94` / `0.937` |
| `priceChange1d` / `priceChange1w` | `0.04` |
| `volume24h` / `volumeTotal` / `volumeUnit` | `122896` / `2.1M` / `USD` |
| `liquidityUsd` / `openInterest` | `52160` |
| `category`, `eventTitle`, `status`, `startDate`, `endDate`, `description`, `url`, `scrapedAt` | |

### Why this scraper

- **Two platforms, one schema.** No more stitching two different APIs together.
- **Smart filters.** Keywords, category, minimum 24h volume and liquidity, so you only pay for markets you care about.
- **Skips dead and expired markets** by default.
- **Uses the official public APIs.** Fast, reliable, no browser, no blocking.
- **Pay only for results.** $2 per 1,000 markets, no monthly rental.

### How to use

1. Pick platforms (Polymarket, Kalshi or both).
2. Add keywords like `bitcoin`, `election`, `fed`, `nfl`, `openai`, or leave empty for everything.
3. Optionally set **Minimum 24h volume** to remove inactive markets.
4. Set **Max results** and click **Start**.
5. Download as JSON, CSV, Excel, or pull via the Apify API. Schedule it hourly to build your own odds history.

#### Example input

```json
{
  "platforms": ["polymarket", "kalshi"],
  "keywords": ["bitcoin", "ethereum"],
  "minVolume24h": 1000,
  "maxItems": 200
}
```

### Use cases

- **Traders & quants:** cross-platform price comparison and arbitrage screening.
- **Journalists & analysts:** what the markets think about elections and news.
- **Dashboards & bots:** feed Google Sheets, Slack alerts, or your own app via API.
- **Researchers:** build historical odds datasets by scheduling runs.

### Notes

- Kalshi volume is reported in **contracts** (each pays $1 if correct); Polymarket volume is in **USD**. See `volumeUnit`.
- Data comes from the platforms' official public APIs. This Actor is not affiliated with Polymarket or Kalshi. Not financial advice.

### Feedback

Missing a field or a platform (Manifold, PredictIt, Limitless)? Open an issue on the Actor page and it will be added.

# Actor input Schema

## Actor input object example

```json
{}
```

# Actor output Schema

## `results` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {};

// Run the Actor and wait for it to finish
const run = await client.actor("ahmed-data-tools/polymarket-kalshi-odds-scraper").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {}

# Run the Actor and wait for it to finish
run = client.actor("ahmed-data-tools/polymarket-kalshi-odds-scraper").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{}' |
apify call ahmed-data-tools/polymarket-kalshi-odds-scraper --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,ahmed-data-tools/polymarket-kalshi-odds-scraper"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/yAWC6GEnAXTF9TX3Y/builds/Okb7nM6EkZoLZxNwl/openapi.json