v0.3.0

Type-faithful calculator MCP server — third release. Install with uvx mcp-abacus.

Calculus & equation solving

• diff(expr, var, at) — numerical derivative of an expression at a point
• integral(expr, var, a, b) — definite integral over [a, b]
• Classic solver benchmark problems added to the end-to-end suite

New language functions

• atan2(y, x) — quadrant-aware arctangent
• Hyperbolic and inverse-hyperbolic functions: sinh, cosh, tanh, asinh, acosh, atanh
• gcd(...) and lcm(...) — variadic greatest-common-divisor / least-common-multiple
• log(x, base) — log overloaded to a two-argument general logarithm
• factorial(n) — unary, capped at 1000
• degrees(x) / radians(x) — angle conversions

Robustness

• Tolerate LLM-mangled JSON arguments, returning actionable errors that tell the model how to fix the request

Full changelog: v0.2.0...v0.3.0