← AI agents
A workbook that survives the whole conversation
The MCP server holds a real workbook, so an agent can build a model over several turns, change one assumption, and recalculate — instead of restating the entire problem in every prompt.
workbook.truecalc.appOpen in full
- Base margin
- 31.8
- Margin if price rises 10%
- 38
- Margin if volume falls 5%
- 31.3
B7
C7
D7
Verified at build timeThese figures are produced by running the grid above through the engine during the build. If the engine ever disagrees with them, this page does not ship.
Raising price beats losing volume here — 38% against 31.3% — because part of the cost base is fixed. That is the kind of conclusion a model should reach by computing, not by pattern-matching.
Take it further
Shipped today. One command — npx -y @truecalc/mcp — gives any MCP client twelve tools over stdio. Nothing leaves your machine.