Quick start

Install CostPad and get to your first blended margin number in three steps.

Three steps from install to your first margin number.

MCP You CostPad appweb / desktop AI assistantClaude / Cursor CostPad MCP server Your modelcosts · tiers · mix Calc engine Blended margin · fees · growth
  1. Install CostPad. Grab the desktop app (macOS) or run the headless MCP server with npx @costpad/mcp. It runs fully offline — your model never leaves your machine. See the installation guide for every option.
  2. Add your costs and tiers. Enter your fixed, per-user, and per-unit costs, then define your pricing tiers. CostPad ships with sensible defaults you can edit in place.
  3. Read your blended margin. Set how many users sit in each tier. The blended economics panel shows your real margin — not a best-case single-tier number.

Next: learn what CostPad is, or jump to the core concepts behind the numbers.

CostPad Documentation

Model COGS, margins, and unit economics for your micro-SaaS. Install, connect the local MCP server, and learn the concepts behind every panel — no account required to start.

Guides

What CostPad is, how to install it, how it works, and the concepts behind the simulator.