# Spillmark (spillmark.com)

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

- Atlas card: https://inite.ai/en/atlas/spillmark.com
- Site: https://spillmark.com
- For: Amazon brand owners running Meta ads who want to measure their real sales impact.
- Categories: commerce
- Use not measured/100 · alive 100/100

## 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

## Price

- from 19 USD/month, no free plan (read 2026-10-29 on https://spillmark.com/#pricing)

## For developers

- MCP server: com.spillmark/spillmark (namespace; open on 2026-10-29, 3 tools)
- Read 2026-10-29

## MCP server, measured daily

Server: https://spillmark.com/mcp, checked every day since 2026-10-29 (6 checks).

- Answered: measuring, 6 daily checks so far
- Median first answer: 522 ms
- Sign-in: none
- Context its tool definitions take: about 456 tokens (3 tools)
- Tool definitions: A, 100/100
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-29

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Source: INITE Atlas, https://inite.ai/en/atlas/spillmark.com. JSON: https://inite.ai/api/atlas/spillmark.com. MCP: https://inite.ai/api/mcp (atlas_lookup).