Spillmark

by FastDrop

MCP MCP VERIFIED Verified 1 hour ago Registry import free

Free Amazon and Meta ads calculators. No brand data and no key.

Free Amazon and Meta ads calculators. No brand data and no key. Official MCP Registry: com.spillmark/spillmark@1.0.0. Remote endpoint: https://spillmark.com/mcp

Problem it solves

Discoverable MCP server listed in the official MCP Registry.

How it's different

Remote MCP endpoint ingested from the official registry and probed by FastDrop.

Ingested from the official MCP Registry

FastDrop pulled this entry from the official MCP Registry as com.spillmark/spillmark and probed the endpoint. The maker did not submit it, so the outbound link is not endorsed and the description is not theirs.

If this is your server, claim the listing to edit it and take ownership. The registry index lists everything else still awaiting a probe.

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Tools this endpoint exposes

Read directly from the endpoint on 25 Oct 2026. Not supplied by the maker.

list_calculators
Spillmark's free Amazon and Meta ads calculators (holdout test size, incremental ROAS, break-even ROAS, ACoS, TACoS, Amazon fees and profit, LTV and CAC), with each one's inputs and example values. Us
run_calculator
Runs one calculator from list_calculators on your numbers and returns the headline result, the supporting figures, a one-sentence reading, and a link that opens the calculator with the same inputs. Mi
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 report on made-up numbers.