MCP For Claude Marketplace
Drop Rate Calculator

Drop Rate Calculator MCP Connector for Claude

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Calculate item drop probabilities, pity mechanics, and expected resource usage for loot-based systems.

3 tools Official Updated Oct 1, 2026 Official Vinkius Partner
More Details Connect to Claude

The Drop Rate Calculator is a statistical tool designed to help players and developers forecast item acquisition probabilities in games with loot-based mechanics. Using the calculate_cumulative_probability tool, you can determine the likelihood of obtaining an item after a specific number of attempts. The estimate_confidence_thresholds tool calculates how many runs are needed to reach 10%, 5/0, or 90% certainty, while analyze_expected_resource_usage provides insights into your current 'luck' status and the expected remaining effort based on your progress.

lootdrop-ratepity-systemgachaprobability-calculator

3 tools expose this connector's capabilities to your AI agent.

analyze_expected_resource_usage

Calculate expected runs to success and efficiency ratio

estimate_confidence_thresholds

Find minimum attempts required for 10%, 50%, and 90% success probability

calculate_cumulative_probability

Calculate the probability of at least one success in N attempts

See how to talk to your AI agent using Drop Rate Calculator.

What is my chance of getting a 2% drop item in 50 pulls?

With a 2% drop rate and 50 attempts, your cumulative probability of obtaining at least one success is approximately 63.58%.

How many runs do I need for a 90% chance of getting an item with a 1% drop rate?

To reach a 90% confidence threshold with a 1% drop rate, you will need to perform at least 230 runs.

I have done 100 runs for a 0.5% item with a pity at 200. How much more should I expect to run?

Based on your current progress of 100 runs, the expected remaining number of runs to achieve success is approximately 86.5.

If you provide a `pityThreshold` in any tool, the calculation accounts for a guaranteed success at that specific trial number, effectively capping the maximum possible failure streak.

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