Flatland

Gives Claude a typed financial modeling backend via MCP and REST. You can compile P&Ls from natural language or structured driver inputs, run scenario analysis with sensitivity propagation across a DAG, and export bit-identical Excel files that pass institutional audit rubrics. The engine handles named ranges, multi-sheet models, and deterministic recomputation, so your agent can build or modify financial models without wrestling with JSON that pretends to be a spreadsheet. Pricing starts at 50 compiles per month free, then $0.10 per answer. Useful when you need Claude to generate investor-ready financial models, run what-if analysis on business metrics, or produce audit-grade artifacts that CFOs can actually open and trust.