# Kelly Criterion Sizing MCP for AI Agents MCP

> Kelly Criterion Sizing calculates optimal betting strategies by determining the mathematically ideal percentage of your bankroll to wager. It helps bettors and traders manage risk, converting raw American odds and win probabilities into precise capital allocation figures for maximum long-term return.

## Overview
- **Category:** finance
- **Price:** Free
- **Endpoint:** https://edge.vinkius.com/vk_preview_tFv1Z2KSagI0M6xJf7MqE0OtDAkLEt6fMz2miNe2/mcp
- **Tags:** kelly-criterion, bankroll-management, betting-calculator, capital-allocation, risk-management

## Description

Managing a betting portfolio requires more than just gut feeling; it demands strict mathematical discipline. This MCP provides specialized tools for calculating optimal bet sizes and managing your overall bankroll. You can first convert common market odds using the net profit ratio tool, translating them into precise risk percentages. From there, you have choices: use the pure Kelly function to find the maximum mathematically recommended wager, or opt for a more cautious approach with half-Kelly sizing. Before running any calculation, you can check your inputs using parameter validation to make sure everything is sound. Because capital preservation is key in this game, having these tools available through Vinkius lets your AI client perform complex risk calculations on demand.

## Tools

### calculate_half_kelly
Determines a safe, reduced wagering fraction for less aggressive risk management.

### calculate_pure_kelly
Calculates the maximum mathematically optimal percentage of your bankroll to wager on a bet.

### get_net_odds_ratio
Converts American betting odds into the net profit-to-stake ratio needed for accurate calculations.

### validate_betting_parameters
Checks all provided inputs—like win probability or odds—to confirm they are mathematically valid for Kelly calculation.

## Prompt Examples

**Prompt:** 
```
What's my optimal bet size for a 60% win chance at -120 odds?
```

**Response:** 
```
**Betting Analysis: Optimal Wager Sizing**

The recommended wager is **8.37%** of your total bankroll.

*   **Calculated Net Odds Ratio (b):** 0.923*
*   **Wagering Strategy:** Pure Kelly Criterion
*   **Risk Assessment:** High return, maximum theoretical growth rate.
**Note: This calculation assumes the provided win probability is accurate.

```

**Prompt:** 
```
I want a safer bet size for an underdog with 45% chance and +200 odds.
```

**Response:** 
```
**Conservative Bet Sizing Report**

Given your risk preference, we recommend using the Half Kelly strategy.

*   **Optimal Wager:** **7.15%** of your bankroll.
*   **Comparison (Pure Kelly):** 10.21% (Too aggressive for safe play)
*   **Net Profit Ratio:** 2.0

This approach balances strong potential returns with much better capital preservation.
```

**Prompt:** 
```
Convert +350 odds into a profit ratio for my model.
```

**Response:** 
```
**Odds Conversion Summary**

The American odds of +350 convert to the following net profit-to-stake ratio (b):

| Odds | Net Profit Ratio (b) |
| :---: | :---: |
| +350  | 3.5               |

This means for every $1 staked, you can expect a $3.50 profit.
```

## Capabilities

### Determine Optimal Wager Size
Calculates the maximum mathematically recommended percentage of your bankroll to wager based on win probability and odds.

### Calculate Conservative Bet Sizes
Provides a safer, reduced wagering fraction for those who prefer less aggressive risk management.

### Convert Market Odds to Ratio
Translates standard American betting odds into the net profit-to-stake ratio needed for accurate calculations.

### Validate Betting Inputs
Checks any set of betting parameters—odds, probabilities, etc.—to ensure they are mathematically sound before calculating a bet size.

## Use Cases

### Structuring a High-Stakes Bet
A professional bettor needs to know the best wager for a game with known odds. They use `get_net_odds_ratio` first, then run `calculate_pure_kelly` to find the highest optimal percentage of their bankroll to risk.

### Modeling Conservative Bets
A fund manager wants to model several potential bets but needs to keep risk low. They use `calculate_half_kelly` across multiple scenarios, providing a safer bet size recommendation for every outcome.

### Pre-Flight Check on Data Integrity
Before running any complex calculation, the user suspects their odds data might be flawed. They run `validate_betting_parameters` to confirm that the input probabilities and ratios are mathematically sound before committing to a bet.

## Benefits

- Determine your maximum possible wager size with the `calculate_pure_kelly` tool, giving you the highest mathematically optimal bet percentage.
- Reduce risk immediately by using `calculate_half_kelly`, which provides a safer, more conservative wagering fraction than the pure Kelly method.
- Standardize data inputs by running `get_net_odds_ratio`, converting raw American odds into usable profit ratios for any calculation.
- Avoid bad calculations before they happen. The `validate_betting_parameters` tool ensures all your input odds and probabilities are mathematically sound.
- Focus on capital allocation, not guesswork. You get precise percentages that guide every decision, letting you manage risk professionally.

## How It Works

The bottom line is that this MCP takes complex betting math and turns it into straightforward, actionable percentages for smart risk management.

1. Start by converting market odds into the required net profit ratio using the designated tool. This standardizes your input data.
2. Next, run the parameter validator to confirm all inputs (odds and probabilities) are mathematically sound for a reliable calculation.
3. Finally, select your desired strategy—either the pure Kelly method or the more conservative half-Kelly approach—to get your final recommended wager percentage.

## Frequently Asked Questions

**How does the Kelly Criterion Sizing MCP help me manage my betting bankroll?**
The Kelly Criterion Sizing MCP calculates the mathematically optimal wager size based on your win probability and odds. It tells you exactly what percentage of your total money to risk to maximize growth while controlling downside risk.

**Should I use pure Kelly or half-Kelly sizing for my bets?**
Pure Kelly gives the absolute maximum bet size, which is best for experienced bettors with high confidence. However, if you want a safer approach that reduces volatility, check the half-Kelly option.

**What kind of odds does this MCP support?**
The MCP supports standard American betting odds. It includes tools to convert those raw odds into net profit ratios, making them ready for accurate calculation in your model.

**Can I use Kelly Criterion Sizing if my input data feels a little shaky?**
Yes. Before calculating anything, the MCP lets you validate all parameters. This tool checks your odds and probabilities to confirm they are mathematically sound, preventing bad numbers from ruining your strategy.

**Is this useful for more than just sports betting?**
Absolutely. Because it deals with pure risk management and capital allocation based on probability ratios, it applies anywhere you're making a calculated bet—like quantitative finance or venture capital modeling.