Does this Amazon Ads MCP change bids?

No. Spillmark's server is read-only. Ads API write tools are on the roadmap. You still make every change.

Do public calculators need an Amazon Ads API key?

No. The public calculators run on the numbers you give them. A brand key is only for your own Spillmark results.

Can Claude or ChatGPT connect today?

Yes. Add Spillmark as a custom connector in Claude or ChatGPT today. Listed directory apps are not available yet.

Amazon Ads MCP

By Harry Burman · Last updated: November 6, 2026

Amazon Ads MCP is a server an AI client calls when you want Amazon advertising math without pasting spreadsheets into a chat. Spillmark's Amazon Ads MCP server at spillmark.com/mcp is read-only today: public profit, fee, ACoS, TACoS, and holdout calculators need no key, and a brand key reads your profit and incrementality results. Live Amazon Ads API campaign, bid, and budget writes are on the roadmap.

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What is an Amazon Ads MCP server?

An Amazon Ads MCP server is a Model Context Protocol endpoint. Your assistant sends a tool call, and the server returns a result. Spillmark's server answers calculator questions for anyone, and brand questions for a key holder. It does not log into Amazon and change a campaign.

If you are not sure the server fits your client, use the Amazon Ads MCP Checker. Setup steps for the custom connector live on Amazon Seller MCP.

What works on Spillmark today?

Today you can connect Claude or ChatGPT to https://spillmark.com/mcp and run the public calculators: profit, fees, ACoS, TACoS, and holdout sizing. No API key is required for those. With a brand key from Settings, the same server reads profit after fees and the locked incrementality record.

Size a test before you connect a brand with the holdout test calculator. Spillmark plans the geo holdout from your orders and waits for your approval before anything pauses.

What is still on the roadmap?

Live Sponsored Ads bid and budget writes are on the roadmap. So are seller-set limits, background actions, and rollback. Until Amazon Ads API write tools ship, an assistant can read and recommend. It cannot push a change into the ads console through Spillmark.

Sellers who need those writes this week should use a product that already ships them. The Agent Central alternative and DataDoe alternative pages say where those products are stronger today.

Who should connect this server now?

Connect now for profit, fee, and holdout math, or a read-only look at a brand. Wait if you need bids, budgets, or listings changed this week.

What does it cost?

The dashboard is free. Standard is $49 a month for one Amazon account, with holdouts you approve. Enterprise is $199 a month for five accounts. You get a 7-day trial for $0.

FAQ

Does this Amazon Ads MCP change bids?: No. Spillmark's server is read-only. Ads API write tools are on the roadmap. You still make every change.
Do public calculators need an Amazon Ads API key?: No. The public calculators run on the numbers you give them. A brand key is only for your own Spillmark results.
Can Claude or ChatGPT connect today?: Yes. Add Spillmark as a custom connector in Claude or ChatGPT today. Listed directory apps are not available yet.