---
title: "Cross-venue prediction-market arbitrage board"
method: GET
path: "/api/v1/arbitrage"
---

# Cross-venue prediction-market arbitrage board

`GET /api/v1/arbitrage`

## Request

- Base URL: `https://www.startuphub.ai`
- URL: `https://www.startuphub.ai/api/v1/arbitrage`
- Auth: none declared

The same real-world events priced on Polymarket, Kalshi/Robinhood, and PredictIt side by side, with a live arbitrage flagged whenever the combined cost of locking a $1 payout drops under $1. Refreshed every 30 minutes. Free, no API key; a paid Bearer key unlocks each leg's direct trade URL. Informational only: verify each market's resolution rules, fees, and withdrawal terms before trading.

## Query parameters

- `arbs_only` '0' | '1'

## Response `200`

Matched-events board with per-leg pricing (JSON).

---

[API](https://skmtc.dev/startuphub/apis/startuphub-ai-api.md) · [All operations](https://skmtc.dev/startuphub/apis/startuphub-ai-api/llms.txt) · [OpenAPI document](https://skmtc.dev/startuphub/apis/startuphub-ai-api/revisions/efec594a9fb1?raw)