numeratica

Thin stdio MCP bridge to the Numeratica financial-planning API — add retirement, tax, and planning tools to any MCP client with npx.

76 deterministic US retirement and tax calculators — Monte Carlo projections, federal and 50-state income tax, Social Security, RMDs, IRMAA, Roth conversions, and equity comp (ISO/AMT, RSU, ESPP). Every year-keyed figure traces to its IRS or SSA source and every result carries a reproducible result_id, so the model calls the engine instead of doing the arithmetic itself.