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Calculator

Exact arithmetic: one calculator tool over an AST allowlist, with integers exact at any size.

Connector by slettmayer · GitHub account verified by the MCP Registry

IndexedMITLocal (stdio)
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Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/slettmayer-calc-mcp-server

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Exact arithmetic: one calculator tool over an AST allowlist, with integers exact at any size.

Reviews

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Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Oct 26, 2026.

Tools
1 read · 0 write · 0 deleteRead-only
Secrets
None asked for
Install scripts
None found
Runs as
Python package

Tools by what they do 1

Read from the source code; the running server may list different tools.

Read 1 · Look things up without changing anything.

  • calculate

Network hosts it talks to 1

  • github.com · found in code

Tools (1)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • calculate

    Evaluate an arithmetic expression and return the result. Args: expression: The expression to evaluate, for example "2 + 3 * (4 - 1)", "sqrt(16) + sin(pi/2)" or "123456789 * 987654321". `^` is accepted as a power operator; `×` and `·` as multiply, `÷` as divide, and `−` (U+2212) as minus.

Signals

Stars
0
Forks
0
Open issues
0
Weekly downloads
97
Last commit
Oct 19, 2026 (9 days ago)
Last release
Sep 17, 2026 (1 month ago)
Last package publish
Sep 17, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Registry name
io.github.slettmayer/calc-mcp-server
Version
0.1.9
Auth
No auth
Packages
pypi calc-mcp-server
License
MIT
Repository
github.com/slettmayer/calc-mcp-server
Website
github.com/slettmayer/calc-mcp-server
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
Official MCP Registrygithub-graphql

More from slettmayer

Cite this page

Calculator MCP server. Agent Mart. https://agentmart.dev/connectors/slettmayer-calc-mcp-server (last updated 2026-10-24)