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Spillmark

Reads Amazon, Shopify and Meta data to run ad holdout tests and show profit by channel.

From $19/mo

Spillmark: data, price, alternatives
At a glancechecked Oct 25, 2026

not read yet

Use

For
Amazon brand owners running Meta ads who want to measure their real sales impact.
Price
From $19/mopricing page, read Oct 29, 2026
Company
Cantein, LLC · Domain since 2026 (registered this year)privacy policy · domain registered
Used for
  • compare channel profit after Amazon fees and ad spend
  • run a geo holdout test to measure Meta's real sales lift
  • decide whether Meta spend is worth keeping on Amazon
read off spillmark.com on Oct 29, 2026
Worth knowingcomputed from what we read · each with its source
Pricingpricing page, read Oct 29, 2026
Your datawhat they publish, each line with its page · read Oct 29, 2026

These are Spillmark's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read Oct 29, 2026
  • MCP servercom.spillmark/spillmarkverified in the MCP registry
  • Stateanswers, 3 toolschecked 2026-10-29
  • Address to connectspillmark.com/mcp

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Commerceby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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Questions this page answers
  • What is Spillmark?

    Reads Amazon, Shopify and Meta data to run ad holdout tests and show profit by channel. It is listed in the Atlas under Commerce and made by Cantein, LLC.

  • Who is Spillmark for?

    Amazon brand owners running Meta ads who want to measure their real sales impact.

  • How much does Spillmark cost?

    Paid plans start at $19/mo, per Spillmark's pricing page on 2026-10-29.

  • Is Spillmark free?

    No. Its pricing page showed no free plan on 2026-10-29.

  • Who owns Spillmark?

    Spillmark is run by Cantein, LLC, per its privacy policy (2026-10-29).

  • What are alternatives to Spillmark?

    In Commerce, by use: Polar Analytics, Klar, Blend AI, WisePPC, MerchantFlow.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk