SERVER

Calculator

Rank #10,632

io.github.slettmayer/calc-mcp-server

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

First listed
Jul 30, 2026
Last publish date
Sep 17, 2026
PURPOSE

What you can do with Calculator

Calculator is a Model Context Protocol (MCP) server published by slettmayer. It ranks #10,632 of 144,396 active servers on MCP Toplist. Calculator is listed across 2 registries — Official MCP and Glama, with 8 tracked versions. It was first listed on Jul 30, 2026 and most recently updated on Sep 17, 2026.

Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.

CAPABILITIES AND LIMITATIONS

What Calculator can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.

REQUIREMENTS

What you need before using Calculator

DeclaredNo credentialsNo credentials declared

The registry listing declares no required environment variables or authentication. This is declared metadata, not a verified install — the repository README is the authority.

Declared by Glama, last synced Oct 16, 2026. Not independently verified by MCP Toplist.

No runtime, credential or payment requirements are recorded for this server beyond the declaration above.

INSTALLATION AND FIRST TASK

Connect Calculator and confirm it works

Python package (PyPI)
claude mcp add calc-mcp-server -- uvx calc-mcp-server
First successful task

After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.

ALTERNATIVES

When to choose another server

Other servers by slettmayer
View all slettmayer servers →

No task-specific alternatives are catalogued for Calculatoryet; the list above is its publisher's other servers.

MAINTENANCE AND EVIDENCE

What changed, and when this was checked

First listed
Jul 30, 2026
Latest version published
Sep 17, 2026
Version history
8 versions tracked (below)
Requirements evidence
Declared by Glama, last synced Oct 16, 2026. Not independently verified by MCP Toplist.
Profile checked
Not yet — purpose, capabilities and requirements above come from registry data only
Ranking data as of
Oct 16, 2026
Registry sightings

Do you maintain Calculator? to correct or enrich this profile.

VERSIONS

Available versions (8)

0.1.2 · Jul 30, 20260.1.3 · Aug 8, 20260.1.4 · Aug 14, 20260.1.5 · Aug 22, 20260.1.6 · Aug 22, 20260.1.7 · Aug 28, 20260.1.8 · Sep 9, 20260.1.9 · Sep 17, 2026Jul 30, 2026Sep 17, 2026
VersionPublished
0.1.9Sep 17, 2026
0.1.8Sep 9, 2026
0.1.7Aug 28, 2026
0.1.6Aug 22, 2026
0.1.5Aug 22, 2026
0.1.4Aug 14, 2026
0.1.3Aug 8, 2026
0.1.2Jul 30, 2026
STANDING
#10,632of 144,396 active serversTop 10%

Ranks ahead of 133,764 of 144,396 servers on MCP Toplist.

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

MCP Toplist: Top 10% of 144,396
Markdown
[![MCP Toplist](https://mcptoplist.com/badge/io.github.slettmayer%2Fcalc-mcp-server.svg)](https://mcptoplist.com/server/io.github.slettmayer%2Fcalc-mcp-server)
HTML
<a href="https://mcptoplist.com/server/io.github.slettmayer%2Fcalc-mcp-server"><img src="https://mcptoplist.com/badge/io.github.slettmayer%2Fcalc-mcp-server.svg" alt="MCP Toplist: Top 10% of 144,396" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

FAQ

Frequently asked questions

Who maintains Calculator?
Calculator is maintained by slettmayer, which publishes 4 MCP servers (36 total versions) tracked on MCP Toplist.
Is Calculator listed on the Official MCP Registry?
Yes — Calculator is listed on the Official MCP Registry, alongside Glama.
How many versions does Calculator have?
MCP Toplist tracks 8 versions of Calculator, most recently published on Sep 17, 2026.
Where can I find the source code for Calculator?
The source code for Calculator is hosted at github.com/slettmayer/calc-mcp-server.
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