KitScout

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Spillmark

MCP serverVerified domain · spillmark.comRemote● LiveFree to try

Read-only Amazon profit, fee, ACoS, and geo-holdout MCP tools for Claude, ChatGPT, and agents.

Install

Remote server: your requests and data go to spillmark.com. Claude Code: claude mcp add --transport http spillmark https://spillmark.com/mcp · Claude app: Settings → Connectors → Add custom connector.

What it can do

The tools this server listed when we connected to it, in its own words.

  • list_calculators — Spillmark's free Amazon and Meta ads calculators (holdout test size, brand-size MDE, geo holdout states, ad waste, Meta ROAS reality check,
  • run_calculator — Runs one calculator from list_calculators on your numbers and returns the headline result, the supporting figures, a one-sentence reading, a
  • how_lift_is_calculated — Spillmark's method in brief: how a geo holdout test measures the sales Meta ads cause on Amazon, with links to the full method and a sample

KitScout test notes

Not tested by KitScout yet. When our harness runs it, pros, cons and the tasks we tried appear here, with the date and evidence.

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