---
title: "Prediction Market Arbitrage Finder"
method: POST
path: "/v1/tools/find_prediction_arbitrage"
---

# Prediction Market Arbitrage Finder

`POST /v1/tools/find_prediction_arbitrage`

## Request

- Base URL: `https://ainumbers.co`
- URL: `https://ainumbers.co/v1/tools/find_prediction_arbitrage`
- Auth: none declared

Identifies cross-venue arbitrage opportunities in binary prediction markets. Computes gross spread, per-venue fees (Kalshi parabolic 7%, SX Bet 2%, CME $0.50/ct, Robinhood $0.10/ct), net edge, break-even stake, and max Kelly allocation. Flags positive-edge arb and near-miss near-arb signals. Zero PII. Client-side. Works offline.

**Tool URL:** https://ainumbers.co/chaingraph/art-212-prediction-market-arbitrage.html

## Request body

- object
  - `no_price_b` number
  - `payout` number
  - `stake_total` number
  - `venue_a` unknown, required
  - `venue_b` unknown, required
  - `yes_price_a` number

## Response `200`

Successful tool execution result

- object
  - `arb_exists` false | true, required
  - `capital_deployed` number, required
  - `consensus_gap` number, required
  - `disclaimer` string, required
  - `fee_a` number, required
  - `fee_b` number, required
  - `gross_profit` number, required
  - `gross_spread` number, required
  - `gross_spread_pct` number, required
  - `implied_prob_yes_a` number, required
  - `implied_prob_yes_b` number, required
  - `k_contracts` number, required
  - `min_spread_to_break_even` number, required
  - `net_edge_pct` number, required
  - `net_profit` number, required
  - `no_price_b` number, required
  - `payout` number, required
  - `stake_total` number, required
  - `total_fees` number, required
  - `venue_a` 'kalshi' | 'polymarket', required
  - `venue_b` 'cme_event' | 'kalshi', required
  - `yes_price_a` number, required

---

[API](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite.md) · [All operations](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/llms.txt) · [OpenAPI document](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/revisions/b462e4f5bb28?raw)