- CLEAN DATA
- ACCURACY
- FINANCE
- HUMAN
Short answer
How can I get my AI to round numbers correctly?
You tell your agent exactly how many decimal places you need, and it uses the round_value tool to fix the precision. This ensures your financial reports or scientific datasets stay consistent. You'll get clean, predictable results.
Precision outcomes
Where your data lands.
What happens when your agent processes your numbers.
CLEAN DATA
Standardized decimals
The AI applies specific rounding rules to every number it processes. You get clean, predictable values instead of long strings of digits.
ACCURACY
Scientific precision
Set the exact number of significant figures or decimal places required for your specific calculation. This prevents cumulative errors in long data chains.
FINANCE
Currency formatting
The agent rounds totals and interest calculations to two decimal places. This keeps your financial spreadsheets looking professional and correct.
HUMAN
Manual review
The AI performs the math, but you decide if the rounding logic meets your specific industry standards. You remain the final authority on the data's validity.
The workflow
What your AI does when a number arrives.
The agent identifies numerical values that need adjustment and applies the math logic immediately.
Identify numbers
Your agent scans your text, spreadsheets, or data files to find floating-point numbers that need rounding.
round_valueApply rounding
The agent uses the specific rounding tool to adjust the value to your requested decimal count.
round_valueValidate output
The agent checks the new value against your original constraints to ensure it meets the precision requirement.
round_valueFormat result
The agent presents the final, rounded number back to you in the requested format.
round_value
Try it
Copy these to start.
Use these prompts to trigger the rounding logic in your chat.
Starting points
These are opening lines. Swap the bracketed text for your actual data sources like a CSV file or a specific calculation.
Math.js Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_9XR5wuizVoLpOQlm7Fd6xdylcsHMWbeUTe8YetYM/mcpClaude Desktop
Follow the steps below to connect in seconds.
- 1In Claude Desktop, open Settings → Connectors.
- 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
- 3Click Add and start a new chat — Math.js capabilities are ready to use.
{
"mcpServers": {
"math-evaluation-engine-mcp": {
"url": "https://edge.vinkius.com/vk_preview_9XR5wuizVoLpOQlm7Fd6xdylcsHMWbeUTe8YetYM/mcp"
}
}
}Round all the currency values in this spreadsheet to two decimal places.
Take the results from my last calculation and round them to four decimal places.
Format the scientific data in this text file using three decimal places of precision.
Look at the totals in my budget sheet and round them to the nearest whole number.
Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline
Start here
Connect Math Evaluation Engine once, then ask.
Just click the connection link to link this MCP to your client. Your credentials stay encrypted and secure on our side.
Connect Math Evaluation Engine to your AIFAQ
How the math rounding works
- 01
Can the AI perform complex calculus?
No. This specific tool is focused on rounding and precision for existing values.
- 02
Will it change my original source files?
No. The AI only provides the rounded values in the chat or as new data; it does not overwrite your original files.
- 03
Can I specify different rounding modes?
Yes, you can tell your agent how to handle specific rounding requirements for your data.
- 04
Does the AI handle currency symbols?
The tool handles the numerical rounding. You should tell the agent if you want the symbol included in the final text output.
- 05
Can the AI decide when to round on its own?
No. You must instruct the agent to use the rounding capability for the numbers you want adjusted.
More questions about Math Evaluation Engine? The Connector page answers them. See everything the Math Evaluation Engine Connector can do
Connect Math.js to Claude, Cursor, ChatGPT & more
