Skip to content
Arithym logo

Arithym

Gives AI agents exact arithmetic, symbolic radicals and verified physical constants through one MCP tool.

From $5/moMaintained

SecurityFor developersFree tier
arithym.xyz ↗GitHub
Open arithym.xyzAlternativesSet it up for my teamIs Arithym yours? Claim the card →
At a glanceswept Oct 26, 2026

not read yet

Use

For
developers and teams building AI agents that need exact math, unit conversions, or verified constants
Price
From $5/mopricing page, read Oct 26, 2026
Activity
Maintainedrelease 7 months ago
Company
Geometric Data Systems, Inc. · Domain since 2026privacy policy · domain registered
Runs as
API
Used for
  • return exact radical results for special-angle trigonometry
  • convert units using exact rational conversion factors
  • look up physical constants and element atomic weights
read off arithym.xyz on Oct 26, 2026
Worth knowingcomputed from what we read · each with its source
  • Has an MCP server (1 in the registry)public registry →
Pricingpricing page, read Oct 26, 2026

From $5/mo

pricing page

Your datawhat they publish, each line with its page · read Oct 26, 2026

These are Arithym's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read Oct 26, 2026
  • MCP serverxyz.arithym/arithymverified in the MCP registry
  • Stateanswers, requires sign-inchecked 2026-10-26
  • Address to connectarithym.xyz/mcp

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Securityby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

Compare Arithym with

Pick up to two.

All 10 alternatives to Arithym →

All Security tools →

Not it? Say what you need

beta

Three tools from the Atlas for the job you describe, each with what fits and what does not.

From people who use itnot part of the reading

No notes yet. What do you use Arithym for?

Sign in to leave a note
Questions this page answers
  • What is Arithym?

    Gives AI agents exact arithmetic, symbolic radicals and verified physical constants through one MCP tool. It is listed in the Atlas under Security and made by Geometric Data Systems, Inc.

  • Who is Arithym for?

    developers and teams building AI agents that need exact math, unit conversions, or verified constants

  • How much does Arithym cost?

    Paid plans start at $5/mo, per Arithym's pricing page on 2026-10-26.

  • Do people use Arithym?

    Little sign of use.

  • Is Arithym still maintained?

    Maintained: release 7 months ago.

  • Who owns Arithym?

    Arithym is run by Geometric Data Systems, Inc., per its privacy policy (2026-10-26).

  • Is Arithym safe?

    We do not audit vendors. What Arithym publishes, read 2026-10-26: GDPR, CCPA stated on its privacy policy.

  • Does Arithym give refunds?

    In its own words (terms of service, 2026-10-26): “All fees are non-refundable except as required by applicable law.”

  • What are alternatives to Arithym?

    In Security, by use: Wircle, ProAudit, AgentData, HatchLoop, Haas, Human For AI.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk