How do I install Fns Calc?

Fns Calc is a local plugin. Install it using PyPI package: atomno-mcp-fns-calc and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

Is Fns Calc safe to use?

Fns Calc scored 5.2/10 (moderate risk) in MCP Marketplace's automated security scan. It has 4 high or critical findings to review. It's listed, but review the security report on this page before installing.

What credentials does Fns Calc need?

Fns Calc requires the following credentials or environment variables: MCP_FNS_CALC_TOKEN. You can find setup instructions on the server detail page.

What AI apps work with Fns Calc?

Fns Calc uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

Back to Browse

Fns Calc MCP Server

by Atomno Mcp

Developer ToolsModerate5.2MCP RegistryLocal

Free

Server data from the Official MCP Registry

Russian tax calculators (VAT, USN, NDFL) and FNS fiscal-status checks via MCP.

About

Russian tax calculators (VAT, USN, NDFL) and FNS fiscal-status checks via MCP.

Security Report

5.2

Moderate5.2Moderate Risk

A well-structured Russian tax calculator MCP server with proper authentication for premium features, clean code organization, and no critical security vulnerabilities. The server correctly separates offline calculators (no auth required) from hosted API calls (Pro token required), implements proper error handling, and uses environment variables for sensitive credentials. Minor concerns around broad exception handling and lack of request signing do not materially impact security posture. Supply chain analysis found 5 known vulnerabilities in dependencies (1 critical, 3 high severity). Package verification found 1 issue.

6 files analyzed · 11 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

env_vars

Check that this permission is expected for this type of plugin.

HTTP Network Access

Connects to external APIs or services over the internet.

What You'll Need

Set these up before or after installing:

API key (Pro tier) for live fiscal-status checks and fresh rates. Calculators work without it.Required

Environment variable: MCP_FNS_CALC_TOKEN

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-atomno-mcp-mcp-fns-calc": {
      "env": {
        "MCP_FNS_CALC_TOKEN": "your-mcp-fns-calc-token-here"
      },
      "args": [
        "atomno-mcp-fns-calc"
      ],
      "command": "uvx"
    }
  }
}

Reviews

No reviews yet

Be the first to review this server!

More Developer Tools MCP Servers

Git

Free

by Modelcontextprotocol · Developer Tools

Read, search, and manipulate Git repositories programmatically

Toleno

Free

by Toleno · Developer Tools

Toleno Network MCP Server — Manage your Toleno mining account with Claude AI using natural language.

mcp-creator-python

Free

by mcp-marketplace · Developer Tools

Create, build, and publish Python MCP servers to PyPI — conversationally.

Fns Calc MCP Server

About

Security Report

Findings (11)Action required

Permissions Required

What You'll Need

How to Install

Reviews

No reviews yet

More Developer Tools MCP Servers

Git

Toleno

mcp-creator-python

MarkItDown

MCP Marketplace

FinAgent