unsolve is the web playground and remote MCP server for mathr, a pure-Rust math engine. It ships a TypeScript port of mathr's symbolic core so you can solve math in the browser or hand the same capability to an AI agent over MCP.

What can unsolve solve?

Derivatives (sum, product, quotient, chain and power rules), integrals (polynomials, exponentials, trig, reciprocals, roots and linear substitutions), equations up to arbitrary degree, Taylor series, simplification and exact evaluation with LaTeX input.

How do I add unsolve to my MCP client?

Point your MCP client at https://unsolve.org/api/mcp. It works with Cursor, Claude Desktop, Claude Code, Windsurf and any other MCP-compatible client. No API key or authentication required.

What is the difference between unsolve and the mathr CLI?

unsolve covers mathr's symbolic core: parse, evaluate, simplify, differentiate, integrate, solve and taylor. The Rust CLI goes further — numerical quadrature, FFT, linear algebra, ODEs, statistics, plotting and a Jupyter-like notebook. Install it with: cargo install mathr.

unsolve — Math, solved. Step by step.

unsolve is a free, deterministic math solver: a web playground and a remote MCP server for mathr, a pure-Rust mathematics library and CLI. The same TypeScript engine that powers this site also serves AI agents over the Model Context Protocol — no API key, no LLM, no network calls once the page loads.

Solve math in your browser

Open the playground at unsolve.org/#playground and type a problem using the mathr command language, or just enter an expression. LaTeX input is accepted ($\frac{1}{2}$, \sqrt{x}, \sin(\pi/4)).

diff <expr> — symbolic derivative with step-by-step rules; diff ... at p evaluates it at a point
integrate <expr> — antiderivative + C; integrate ... from a to b for numeric definite integrals
solve <equation> — exact linear and quadratic roots (complex included), rational roots for higher degrees, numeric root finding
limit <expr> at p — limits via L'Hôpital's rule, including at ±∞
taylor <expr> — Taylor series expansion up to 12 terms
expand <expr> — polynomial expansion; apart <expr> — partial fractions
poly-roots <coeffs> — all real and complex roots (Durand–Kerner)
det / inv / transpose / linsolve — exact matrix operations on [a, b; c, d] literals, incl. linear systems
gcd, lcm, factor, is-prime, fib, binom — number theory with exact big integers
stats ... — descriptive statistics; <expr> — exact evaluation (1/2 + 3/4 = 5/4)

Free math MCP server for AI agents

Point any MCP client (Cursor, Claude Desktop, Claude Code, Windsurf) at https://unsolve.org/api/mcp — Streamable HTTP, stateless, no authentication. Twelve tools are available: evaluate, differentiate, integrate, solve, limit, apart, poly-roots, matrix, number-theory, stats, simplify, and taylor. Every result returns structured JSON with plain-text output, LaTeX, and step-by-step working, ready to drop into agent context. Rate limit: 60 requests per minute per IP.

Frequently asked questions

What is unsolve?

The web playground and remote MCP server for mathr, shipping a TypeScript port of mathr's symbolic core.

Does unsolve use an LLM?

No. Results are computed by a deterministic symbolic engine — same input, same output, every time.

How accurate are the results?

Rational inputs use exact fraction arithmetic; derivatives and antiderivatives are symbolic; numeric roots converge to about 1e-12.

What can it solve?

Derivatives, integrals, equations up to arbitrary degree, Taylor series, simplification, and exact evaluation with LaTeX input.

How do I add it to my MCP client?

Add https://unsolve.org/api/mcp to your client's MCP config. Works with Cursor, Claude Desktop, Claude Code, and Windsurf.

What's the difference between unsolve and the mathr CLI?

unsolve covers mathr's symbolic core. The Rust CLI adds numerical quadrature, FFT, linear algebra (LU/QR/SVD/eigen), ODE solvers, statistics, number theory, plotting, and a Jupyter-like notebook — install with cargo install mathr.