Drop Rate Calculator Connector for AI agents.
3 live capabilities
Balance game loot tables and calculate gacha success probabilities.
Waiting for input…
Why people use Drop Rate Calculator
Drop Rate Calculator for Gacha Mechanics and Loot Tables
With this Connector, you just tell your agent what the drop rate is and what you're trying to get. It handles the math instantly, giving you the exact number of runs needed for high certainty or your current efficiency ratio.
What Vinkius changes
You get precise loot math without touching a calculator.
Use it from Claude, ChatGPT, Cursor or another AI client you already have.
One account · 5,900+ Connectors
- Real-world use case 01
Balancing a new gacha banner
A designer asks their agent to find the number of pulls needed for a 90% success rate on a 1% drop item to ensure the banner isn't too punishing.
- Real-world use case 02
Planning a rare item hunt
A player provides their current progress on a 0.
- Real-world use case 03
Analyzing loot efficiency
A developer uses the capability to see if their current loot drop rates are resulting in an efficient use of player resources.
Complete set · 3capabilities
The complete Drop Rate Calculator capability set.
These are the exact actions your AI can choose when you ask it to work with Drop Rate Calculator.
01—03
3 capabilities in this set.
Part of 3 available through Drop Rate Calculator.
- 01 Capability
Analyze expected resource usage
Calculate your current efficiency ratio and the expected number of runs left to succeed.
- 02 Capability
Estimate confidence thresholds
Find the minimum number of attempts needed to reach 10%, 50%, or 90% success probability.
- 03 Capability
Calculate cumulative probability
Calculate the probability of getting at least one success within a specific number of attempts.
Set up in minutes
One URL. Then ask Drop Rate Calculator to work.
Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use Drop Rate Calculator from the conversation.
Choose your client
Live previewAdvanced clients IDE · CLI
Claude · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_6W4nRayDMr9knrNMsgfTjvfvvr5RHvYfr0Wsdr2X/mcp - Step 01
Open Connectors
In Claude Web or Claude Desktop, open Settings and choose Connectors.
- Step 02
Add the URL
Choose Add custom connector, name it Drop Rate Calculator, and paste the URL above.
- Step 03
Turn it on in chat
Select +, open Connectors, and enable Drop Rate Calculator for the conversation.
ChatGPT · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_6W4nRayDMr9knrNMsgfTjvfvvr5RHvYfr0Wsdr2X/mcp - Step 01
Open MCP settings
On desktop, open Settings and MCP servers. On web, open your workspace app or connector settings.
- Step 02
Add the URL
Choose Add server with Streamable HTTP, or create a custom MCP app, then paste the Drop Rate Calculator URL.
- Step 03
Save and start
Save the connection and enable Drop Rate Calculator in your conversation. Desktop may ask you to restart once.
Cursor · IDE configuration
Advanced setup
{
"mcpServers": {
"drop-rate-calculator": {
"url": "https://edge.vinkius.com/vk_preview_6W4nRayDMr9knrNMsgfTjvfvvr5RHvYfr0Wsdr2X/mcp"
}
}
}- Step 01
Open MCP Settings
Press Cmd+Shift+P (macOS) or Ctrl+Shift+P (Windows/Linux) → search "MCP Settings"
- Step 02
Add the server config
Paste the JSON configuration above into the mcp.json file that opens
- Step 03
Save the file
Cursor will automatically detect the new Connector
- Step 04
Start using Drop Rate Calculator
Open Agent mode in chat and ask: "Using Drop Rate Calculator, help me...". 3 tools available
VS Code Copilot · IDE configuration
Advanced setup
{
"mcpServers": {
"drop-rate-calculator": {
"url": "https://edge.vinkius.com/vk_preview_6W4nRayDMr9knrNMsgfTjvfvvr5RHvYfr0Wsdr2X/mcp"
}
}
}- Step 01
Create MCP config
Create a .vscode/mcp.json file in your project root
- Step 02
Add the server config
Paste the JSON configuration above
- Step 03
Enable Agent mode
Open GitHub Copilot Chat and switch to Agent mode using the dropdown
- Step 04
Start using Drop Rate Calculator
Ask Copilot: "Using Drop Rate Calculator, help me...". 3 tools available
Windsurf · IDE configuration
Advanced setup
{
"mcpServers": {
"drop-rate-calculator": {
"url": "https://edge.vinkius.com/vk_preview_6W4nRayDMr9knrNMsgfTjvfvvr5RHvYfr0Wsdr2X/mcp"
}
}
}- Step 01
Open MCP Settings
Go to Settings → MCP Configuration or press Cmd+Shift+P and search "MCP"
- Step 02
Add the server
Paste the JSON configuration above into mcp_config.json
- Step 03
Save and reload
Windsurf will detect the new server automatically
- Step 04
Start using Drop Rate Calculator
Open Cascade and ask: "Using Drop Rate Calculator, help me...". 3 tools available
Cline · IDE configuration
Advanced setup
{
"mcpServers": {
"drop-rate-calculator": {
"url": "https://edge.vinkius.com/vk_preview_6W4nRayDMr9knrNMsgfTjvfvvr5RHvYfr0Wsdr2X/mcp"
}
}
}- Step 01
Open Cline MCP Settings
Click the Connectors icon in the Cline sidebar panel
- Step 02
Add remote server
Click "Add Connector" and paste the configuration above
- Step 03
Enable the server
Toggle the server switch to ON
- Step 04
Start using Drop Rate Calculator
Ask Cline: "Using Drop Rate Calculator, help me...". 3 tools available
Claude Code · Terminal command
Advanced setup
claude mcp add drop-rate-calculator --transport http "https://edge.vinkius.com/vk_preview_6W4nRayDMr9knrNMsgfTjvfvvr5RHvYfr0Wsdr2X/mcp"- Step 01
Install Claude Code
Run npm install -g @anthropic-ai/claude-code if not already installed
- Step 02
Add the Connector
Run the command above in your terminal
- Step 03
Verify the connection
Run claude mcp to list connected servers, or type /mcp inside a session
- Step 04
Start using Drop Rate Calculator
Ask Claude: "Using Drop Rate Calculator, show me...". 3 tools are ready
Where the request belongs
Work Drop Rate Calculator can move forward.
Game designers who need to balance reward economies, gacha enthusiasts planning their pulls, and streamers who want to explain RNG to an audience.
Game Designer
Balancing loot tables on a Tuesday to ensure items aren't too easy or impossible to find.
Gacha Player
Calculating exactly how many more pulls are needed to hit a 90% certainty for a rare character.
Live Streamer
Explaining the math behind a 'bad luck' streak to a live audience in real time.
Build the capability set
Add more capabilities.
Each Connector adds new actions and data without changing how you work.
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Loot Table Balancer
Precision utility for calculating, normalizing, and auditing loot table probabilities and economic expected values.
Bring your own AI
Change the model, client or framework. Keep Drop Rate Calculator connected.
-
Claude -
ChatGPT -
Gemini -
Cursor -
VS Code -
Windsurf -
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Cline -
Zed -
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LibreChat -
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Chorus -
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LangChain -
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CrewAI -
Vercel AI SDK
Before you connect
Questions about Drop Rate Calculator.
The practical details behind the request, access and result.
How does the Drop Rate Calculator help with gacha games?
It helps you calculate the exact number of pulls needed to hit specific success probabilities, like 90% certainty, so you can plan your resources better.
Can I use Drop Rate Calculator to see my 'luck' status?
Yes, it can analyze your current progress against the expected success rate to show you if you're ahead or behind the curve.
How do I find out how many pulls I need for a specific item?
Just tell your agent the item's drop rate and your goal for certainty. It will tell you the minimum number of attempts required to hit that goal.
Does Drop Rate Calculator work for any loot system?
It works for any loot system based on fixed probabilities, including MMO drops, gacha banners, and standard RPG loot tables.
Can I use this to balance my own game's rewards?
Absolutely. It's a great capability for game designers to model reward thresholds and ensure that rare items aren't too easy to obtain.
How does the calculator handle pity systems?
If you provide a pityThreshold in any capability, the calculation accounts for a guaranteed success at that specific trial number, effectively capping the maximum possible failure streak.
What does the efficiency ratio mean?
In analyze_expected_resource_usage, an efficiency ratio greater than 1.0 indicates that your current number of unsuccessful runs has exceeded the statistical average, meaning you are currently 'unlucky'.
Can I use this for Gacha games?
Yes, the calculator is ideal for any system using Bernoulli trials, such as Gacha pulls, loot boxes, or boss drops with fixed or pity-based rates.
One connection away
Give your agent a direct line to Drop Rate Calculator.
Connect Drop Rate Calculator once. Keep it beside 5,900+ managed Connectors when the next task needs more.
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