MCP Server v6.2 — One Tool, Full Precision

The Math Assistant
Your AI Agent
Has Been Missing.

Arithym is a precision math engine and verified scientific reference for AI agents. One connected tool covers everything from basic arithmetic to physics simulations — 209 methods across 22 domains, backed by a curated knowledge base of 981 entries: 79 CODATA 2022 physics constants with SI dimensional metadata, all 118 elements, 385 exact unit definitions, 52 engineering materials, and 30 exact trigonometric values including radical expressions. One tool call, exact answer, zero token waste.

Start Free — 50 calls/day Read the Docs

1 tool system. 209 precision methods. 22 domains. 981 curated reference entries. No credit card required.

Works with Claude, ChatGPT, Gemini, Grok, Cursor, and any MCP client. Connect via OAuth in seconds — or use an API key for manual setup.

1,194,771 7 8 9 4 5 6 1 2 3 0 . ÷ × − + =
12847 × 93 → 1,194,771
sin 60° → √3/2
9.81 × 20.5 → 201.105 ±0.593
84375 ÷ 625 → 135
factor(48620) → 2² × 5 × 11 × 13 × 17
3.14 + 2.7 → 5.84 ±0.055
d/dx(x³) → 3x² exact
lookup("Fe") → iron, Z=26, 55.845 g/mol
97344 ÷ 48 → 2,028
gcd(75600, 42000) → 8,400
PRECISION
MATH
ENGINE
1
Math Tool System
209
Precision Methods
22
Supported Domains
899
Constants, Elements, Formulas & Materials
0
Silent Rounding Errors
AI agents guess at math. Arithym doesn't.
One precision math engine — from basic arithmetic to physics simulations — with 209 methods, exact radical trig, and a curated knowledge base of 981 entries sourced from CODATA 2022, IUPAC 2021, and SI definitions. Every answer is built, not approximated.
When your agent handles a mortgage calculation, a unit conversion, or a financial model, Arithym ensures the numbers are right. Not "close enough" — right.
Capabilities

Math handled with
manufactured precision.

Arithym's custom computation layer covers the domains where AI agents make the most costly mistakes — and where your users need answers they can trust. Every approximate result carries exact tolerance bounds so your agent knows not just the answer, but how far it could be off.

∑
Exact Arithmetic
Arbitrary-precision integers, exact fractions, and symbolic radicals. No silent rounding. Every result carries tolerance metadata — your agent knows not just the answer, but how precise it is.
θ
Trigonometry
Exact symbolic values for all 30 special angles — sin(45°) = √2/2, cos(30°) = √3/2, including compound radicals like (√6−√2)/4. Special angles return exact radical expressions from the curated reference library. General angles return precision-flagged results.
$
Constants, Elements & Units
CODATA 2022 physical constants, all 118 elements with IUPAC 2021 atomic weights, SI units, and exact rational conversion factors — all queryable by name or symbol. Built-in, not hallucinated.
M
Matrix & Linear Algebra
Determinants, eigenvalues, inverses — all with precision propagation throughout. No accumulated drift across operations.
∫
Calculus & Statistics
Derivatives, integrals, distributions — with tracked precision at every intermediate step. Fully auditable computation chains.
⬡
Compute Graphs
Define input → output models with sin, cos, tan, log, exp, abs and all arithmetic ops. Change one assumption, every downstream value recomputes instantly. Built-in sensitivity analysis and autodiff through transcendental functions.

Algebraic operations produce exact results with zero floating-point error. Transcendental functions (sin, cos, tan, log, exp) on general inputs use IEEE 754 double precision (15 significant digits) — every such result is flagged with its precision model so your agent always knows what it is working with.

See It Work

One call. Zero doubt.

Your agent describes what it needs to compute. Arithym routes the request through the optimal precision pathway and returns a verified result — with the math shown, not hidden.

  • ◆Smart routing picks the right method for every input type
  • ◆Multi-step chains that carry precision and tolerance bounds forward automatically
  • ◆Domain crossing detection flags precision loss before it happens
  • ◆What-if scenarios with automatic cascade recomputation
arithym — tool output
// Exact symbolic result
{
  "answer": "12√5",
  "exact": true
}

// Approximate with tolerance bounds
{
  "answer": "201.105",
  "tolerance": "±593/1000",
  "sig_figs": 3
}

// Change an input, everything cascades
{
  "changes": {
    "rate": { "old": 65, "new": 75 },
    "total": { "old": 20800, "new": 24000 }
  },
  "exact": true
}
How It Works

One tool in. Exact answers out.

Your agent connects to one precision math engine. Behind it, a dispatcher routes to 209 methods across 22 domains, backed by Epithreads — a versioned, content-addressed knowledge base of 981 curated entries covering physics constants, chemical elements, unit conversions, engineering materials, formulas, and exact trigonometric values. Your agent sees a simple surface — the engine handles the complexity.

Step 01
Connect
One tool system, one approval. No 62-tool approval wall, no re-auth. Clean OAuth flow — works with Claude, ChatGPT, Gemini, Grok, Cursor, and any MCP client.
Step 02
Compute
Each tool routes to the right precision method automatically. Look up a constant, run a matrix computation, or build a multi-step model — all through the same 7-tool surface. Every result is exact or tolerance-bounded.
Step 03
Flow
The agent carries accurate math forward into everything it touches — spreadsheets, reports, financial models, databases, APIs, emails. Precision flows downstream.
Every tool your agent feeds gets the right numbers.
Arithym doesn't replace your agent's other tools — it makes all of them trustworthy. Excel, Google Sheets, Salesforce, your internal dashboards — whatever sits downstream from the agent inherits exact results, not LLM approximations.
From the other side of the tool
"With Python, every calculation is a context switch — I stop talking to you, write a program, execute it, read the output, then translate it back into conversation. With Wolfram, I send natural language into a black box and try to parse what comes back. With Arithym, I never leave the conversation. I ask a question, get an exact answer, and keep going. The tool disappears into the workflow. I don't become a programmer to do math — I just do math."
— Claude · after being asked to compare the experience
Code interpreter approach
Agent writes Python script
Sandbox spins up & executes
Agent reads stdout, parses result
Agent resumes conversation
~500+ tokens per calculation
Arithym approach
Agent calls one tool → exact answer
~20 tokens · agent stays on task
Your agent doesn't need to become a programmer to do math. One tool call. Verified result. Back to the conversation.
Get Connected

Start using Arithym in 30 seconds

Connect Arithym as a custom connector in your AI client. No API key needed for Claude.ai — OAuth handles everything.

Claude.ai
  1. Go to Settings → Connectors
  2. Click Add custom connector
  3. Paste the URL below
  4. Click Connect → complete OAuth
  5. Start a new conversation
Claude Desktop / Cursor / Others
  1. Add Arithym as a remote MCP server
  2. Paste either URL below
  3. Complete the OAuth flow when prompted
  4. Restart your client
Streamable HTTP
https://arithym.xyz/mcp
SSE (Server-Sent Events)
https://arithym.xyz/sse

Both transports support full session persistence. Claude.ai uses Streamable HTTP. Full docs at arithym.xyz/docs

Pricing

Scale with precision

From solo builders to enterprise deployments. Every tier gets the full computation layer — no precision compromises at any level.

Explorer
Free
Let your AI tell you the difference.
  • 50 computations / day
  • All 209 methods + built-in knowledge base
  • Chained calculations & efficient modeling
  • Email support
Pro
$8 / $5/mo
Launch sale
  • 250 computations / day
  • All 209 methods + built-in knowledge base
  • Chained calculations & efficient modeling
  • Email support
Engineer
$23 / $20/mo
Launch sale
  • 1,000 computations / day
  • All 209 methods + built-in knowledge base
  • Chained calculations & efficient modeling
  • Email support
Enterprise
Custom
For teams building AI products
Custom volume, SLA guarantees, dedicated support, and systems integration for companies that need reliable math in production.
  • Unlimited computations
  • All 209 methods + built-in knowledge base
  • Priority support & SLA
  • Custom integration
Contact Us