Deterministic Math Expression Evaluator MCP Server for CursorGive Cursor instant access to 1 tools to Evaluate Math

When LLMs try to solve complex algebraic strings (e.g., (15 + 4) * 2 / sqrt(9)), they often guess the mathematical order of operations, leading to hallucinations. While one solution is to pass the string into Javascript's eval() function, this creates a massive security vulnerability for injection attacks. The Expression Evaluator MCP resolves this by implementing a pure, secure Recursive Descent Parser (AST) to evaluate mathematical strings deterministically.

Cursor's Agent mode turns Deterministic Math Expression Evaluator into an in-editor superpower. Ask Cursor to generate code using live data from Deterministic Math Expression Evaluator and it fetches, processes, and writes. all in a single agentic loop. 1 tools appear alongside file editing and terminal access, creating a unified development environment grounded in real-time information.

The Superpowers

• Order of Operations (PEMDAS): Impeccably resolves parentheses, exponents, multiplication, and addition in the exact mathematical order.
• Zero-Vulnerability Execution: Employs a custom Lexer and AST (Abstract Syntax Tree) instead of eval(). Malicious code injections are physically impossible to execute.
• Built-in Math Functions: Supports trig and algebraic functions right out of the box: sqrt, abs, sin, cos, tan, log, exp, round, ceil, floor.
• Zero-Dependency Architecture: Pure JS runtime execution guarantees absolute speed without external bloated parsing packages.

The Deterministic Math Expression Evaluator MCP Server exposes 1 tools through the Vinkius. Connect it to Cursor in under two minutes — credentials fully managed, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.