It helps avoid rounding errors that can occur when software represents money with ordinary binary numbers. This matters when calculation results must be exact.

precisioncalc-mcp — MCP server by inity13

precisioncalc-mcp

precisioncalc-mcp is an MCP server for Claude Code, Codex, Cursor, Gemini CLI, OpenCode from inity13/precisioncalc-mcp. Its token cost is not measured, scanned A, original, MIT.

A local tool for exact finance and business calculations using decimal arithmetic instead of floating-point numbers. It is provided as an npm package and can be run with npx, a command that downloads and runs a package.

In plain words

What is it for?: Use it for financial or business calculations where precise decimal results are required.
Why use it?: It helps avoid rounding errors that can occur when software represents money with ordinary binary numbers. This matters when calculation results must be exact.

Written for no agent in particular: it speaks MCP, so any client can run it.

Good fit Use it for financial or business calculations where precise decimal results are required.

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Install with agentmods

npx agentmods add mcp/inity13/precisioncalc-mcp/precisioncalc-mcp

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/inity13/precisioncalc-mcp

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/mcp/inity13/precisioncalc-mcp/precisioncalc-mcp/github.svg)](https://agentmods.dev/mcp/inity13/precisioncalc-mcp/precisioncalc-mcp)

Your own site

<a href="https://agentmods.dev/mcp/inity13/precisioncalc-mcp/precisioncalc-mcp"><img src="https://agentmods.dev/badge/mcp/inity13/precisioncalc-mcp/precisioncalc-mcp/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/mcp/inity13/precisioncalc-mcp/precisioncalc-mcp"><img src="https://agentmods.dev/badge/mcp/inity13/precisioncalc-mcp/precisioncalc-mcp.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

precisioncalc-mcp scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

server.json · 10 lines

What it actually says

{
  "precisioncalc-mcp": {
    "command": "npx",
    "args": [
      "-y",
      "precisioncalc-mcp"
    ],
    "env": {}
  }
}

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 10 lines scan A 068049333aaa

Subscribe to this mod's changes

precisioncalc-mcp is an MCP server published in the GitHub repository inity13/precisioncalc-mcp (0 stars, last pushed 18d ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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