MCP Tool for Financial Date Calculations
Sea_Life493 · reddit · 2026-07-17
The author open-sourced an MCP server named shikamaru designed for financial date calculations, aiming to stop agents from guessing in scenarios demanding absolute precision. The project covers:
- Day-count conventions
- Accrued interest
- Business day adjustments with holiday calendars
- Payment schedule generation
The creator notes that the implementation has been validated against 3,600+ QuantLib reference test cases and operates under the MIT License. It can be run via npx or installed as a Claude Code plugin. The motivation stems from the fact that while agents often seem to handle date calculations, fixed-income and similar scenarios require provably correct results.
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