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BTC 15-min Up/Down Arbitrage (Polymarket x Kalshi)

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Find executable Bitcoin 15-minute up/down arbitrage between Polymarket and Kalshi. Matches their BTC 15-min markets by close time, pulls live order-book depth, applies both platforms' documented fees, and returns only mismatches still profitable at the supported size.

Pricing

from $0.01 / actor start

Rating

0.0

(0)

Developer

Dmitry Melikhov

Actor stats

Bookmarked

Total users

Monthly active users

an hour ago

Last modified

Categories

Automation

You can access the BTC 15-min Up/Down Arbitrage (Polymarket x Kalshi) programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in API & Integrations in Apify Console.

Python

JavaScript

CLI

OpenAPI

HTTP

MCP

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  "components": {
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      "inputSchema": {
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        "properties": {
          "orderSizeUsd": {
            "title": "Capital to simulate per leg (USD)",
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            "type": "integer",
            "description": "How much you'd spend on each side of a matched pair. Order books are walked to this budget on each platform; the reported size/profit is capped by whichever side runs out of depth first.",
            "default": 200
          },
          "minNetProfitUsd": {
            "title": "Minimum net profit (USD)",
            "type": "number",
            "description": "Only rows whose profit after both platforms' trading fees clears this amount are flagged isArbitrage=true (and charged). All matched windows are still reported regardless.",
            "default": 0.5
          },
          "timeToleranceMinutes": {
            "title": "Window-match tolerance (minutes)",
            "minimum": 0,
            "maximum": 10,
            "type": "integer",
            "description": "How close two platforms' window close times must be to count as the same real-world 15-minute window.",
            "default": 2
          },
          "maxResults": {
            "title": "Maximum opportunities",
            "minimum": 1,
            "type": "integer",
            "description": "Stop after this many isArbitrage=true rows (spread/status rows are always emitted).",
            "default": 20
          },
          "kalshiFeeRate": {
            "title": "Kalshi fee rate",
            "type": "number",
            "description": "Kalshi trading fee coefficient: fee = rate x contracts x price x (1 - price), rounded up to the cent. Update if Kalshi changes its schedule.",
            "default": 0.07
          },
          "polymarketFeeRate": {
            "title": "Polymarket fee rate",
            "type": "number",
            "description": "Polymarket crypto-category taker fee coefficient: fee = size x price x rate x (price x (1 - price))^exponent.",
            "default": 0.0025
          },
          "polymarketFeeExponent": {
            "title": "Polymarket fee exponent",
            "type": "number",
            "description": "Exponent in Polymarket's fee formula. Default 2 per the crypto-category schedule.",
            "default": 2
          },
          "kalshiImpliedSizeFactor": {
            "title": "Kalshi implied-size factor",
            "minimum": 0.05,
            "maximum": 1,
            "type": "number",
            "description": "Kalshi exposes bids only, so its ask depth is implied from the opposite side. This factor (< 1) discounts that implied size to stay conservative about executable depth. Marked in output as kalshiSizeSource='implied'.",
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Polymarket x Kalshi BTC 15-Min Arbitrage Scanner OpenAPI definition

OpenAPI is a standard for designing and describing RESTful APIs, allowing developers to define API structure, endpoints, and data formats in a machine-readable way. It simplifies API development, integration, and documentation.

OpenAPI is effective when used with AI agents and GPTs by standardizing how these systems interact with various APIs, for reliable integrations and efficient communication.

By defining machine-readable API specifications, OpenAPI allows AI models like GPTs to understand and use varied data sources, improving accuracy. This accelerates development, reduces errors, and provides context-aware responses, making OpenAPI a core component for AI applications.

You can download the OpenAPI definitions for BTC 15-min Up/Down Arbitrage (Polymarket x Kalshi) from the options below:

OpenAPI.json

If you’d like to learn more about how OpenAPI powers GPTs, read our blog post.

You can also check out our other API clients:

BTC 15-min Up/Down Arbitrage (Polymarket x Kalshi) API in Python

BTC 15-min Up/Down Arbitrage (Polymarket x Kalshi) API in JavaScript

BTC 15-min Up/Down Arbitrage (Polymarket x Kalshi) API through CLI

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