---
title: "Prediction Market Analyzer"
method: POST
path: "/v1/tools/analyze_prediction_market"
---

# Prediction Market Analyzer

`POST /v1/tools/analyze_prediction_market`

## Request

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

Analyzes a binary or scalar prediction market position. Computes PnL, Kalshi parabolic fees, implied probability, break-even probability, no-vig fair value, expected value, Kelly criterion sizing, American and decimal odds, Brier score, and log score. Supports Polymarket, Kalshi, CME Event Contracts, and Robinhood. Zero PII. Client-side. Works offline.

**Tool URL:** https://ainumbers.co/chaingraph/art-211-prediction-market-analyzer.html

## Request body

- object
  - `bankroll` number
  - `contract_max` number
  - `contract_min` number
  - `entry_price` number
  - `forecast_prob` number, required
  - `mode` unknown, required
  - `n_contracts` number
  - `no_ask` number, required
  - `outcome` boolean, required
  - `payout` number
  - `settlement_value` number
  - `side` unknown, required
  - `strike` number
  - `unit_value` number
  - `user_probability` number, required
  - `venue` unknown, required
  - `won` boolean, required

## Response `200`

Successful tool execution result

- object
  - `break_even_probability` number
  - `brier_score` number, nullable
  - `disclaimer` string, required
  - `entry_price` number
  - `expected_value` number, nullable
  - `fee_paid` number
  - `half_kelly_stake` number, nullable
  - `implied_probability` number
  - `kelly_fraction` number, nullable
  - `log_score` number, nullable
  - `mode` 'binary' | 'scalar', required
  - `n_contracts` number, required
  - `no_vig_fair_value` number
  - `odds_american` number
  - `odds_decimal` number
  - `odds_fractional` string
  - `payout` number
  - `pnl` number, required
  - `settlement_clamped` number
  - `settlement_delta` number
  - `settlement_in_range` boolean
  - `settlement_value` number
  - `side` 'long' | 'yes', required
  - `strike` number
  - `unit_value` number
  - `venue` 'cme_event' | 'kalshi' | 'polymarket', required
  - `won` number

---

[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)