# Prediction Market Cross-Platform Arbitrage Finder

> Prediction Market Cross-Platform Arbitrage Finder is a paid API for AI agents from predict.memoryapi.org, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Identifies arbitrage opportunities across Polymarket, Kalshi, and Manifold prediction markets where the same event is priced differently.

## Facts

- Endpoint: GET https://predict.memoryapi.org/x402/predict/platform_arb
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/predict-memoryapi-org-74ebe2ee
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mPmiSGBTMUQP5x6Fwkzrs

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability predict-memoryapi-org-74ebe2ee
```

Example prompt: Can you scan Polymarket, Kalshi, and Manifold right now and find any arbitrage opportunities where the same event is priced differently enough to profit?

## When to prefer this

Use this endpoint when you want to simultaneously scan multiple prediction market platforms for pricing inefficiencies on the same event, rather than checking each platform separately. Ideal for trading bots or research agents looking to exploit cross-platform mispricings. Prefer over single-platform endpoints when the goal is arbitrage rather than browsing or researching a specific market.

## Known failure modes

- No arbitrage opportunities found at current time — markets may be efficiently priced
- Rate limiting or payment failure for the $0.001 USDC per call fee
- One or more upstream platforms (Polymarket, Kalshi, Manifold) temporarily unavailable
- Stale pricing data if market moved before response is returned

## How this service works

Find prediction market arbitrage across Polymarket, Kalshi, and Manifold.

## Output

A list of arbitrage opportunities across Polymarket, Kalshi, and Manifold, including the market event, the implied probability or price on each platform, the price discrepancy, and the estimated profit margin available from exploiting the spread.

## Example request

```json
{
 "q": "Bitcoin price prediction",
 "tag": "crypto",
 "limit": 10
}
```

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "required": [
    "method"
   ],
   "properties": {
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/predict-memoryapi-org-74ebe2ee/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from predict.memoryapi.org](https://www.zero.xyz/host/predict.memoryapi.org/llms.txt)