Agent Central Alternative
By Harry Burman · Last updated: November 6, 2026
Agent Central alternative: pick Agent Central when you need Amazon Ads and Seller Central writes today. Spillmark's Ads API writes are on the roadmap. Agent Central ships those writes across 23 marketplaces, with a preview before each change.
How do the verified features compare?
Rows are only homepage facts from November 6, 2026. Profit dashboards and geo holdouts are not rows: the page does not document them.
| Feature | Spillmark | Agent Central |
|---|---|---|
| Hosted MCP server an AI client can connect to | Yes | Yes |
| AI can change Amazon Ads (bids, budgets, campaign states, keywords) today | No | Yes |
| Reads Seller Central sales, orders, listings, inventory or finance data | Yes | Yes |
Checked November 6, 2026. https://agentcentral.to. Spillmark: https://spillmark.com. https://agentcentral.to/pricing returns 404; pricing is on the homepage.
Priced by orders, not seats, on annual billing. Homepage tiers: Starter $32.50/mo ($390 billed yearly), 0 to 1,000 orders; Growth $57.50/mo ($690 billed yearly), 1,001 to 5,000 orders; Scale $82.50/mo ($990 billed yearly), 5,001 to 10,000 orders; Business $132.50/mo ($1,590 billed yearly), 10,001 to 20,000 orders; Enterprise Custom (Custom agreement), 20,001+ orders. agentcentral.to/pricing returned 404, and a monthly billing price is not stated.
Where is Agent Central stronger today?
Agent Central is ahead today on live Ads and Seller Central writes, 23 marketplaces, a REST API and CLI, and changes that are previewed, confirmed, and logged.
Who should pick Agent Central?
Pick Agent Central for live Seller Central and Ads writes, with preview, confirm, logs, read-only keys, a REST API, a CLI, and 23 marketplaces.
Where is Spillmark different today?
Spillmark shows profit after Amazon fees, product cost, and ad spend across Amazon, Meta, and Shopify in a web dashboard. It plans locked geo-holdout tests so you can see which ads cause orders. Public calculators on the MCP server need no key. 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.
Read the setup on Amazon Seller MCP, the server page Amazon Ads MCP, and the Amazon Ads MCP Checker. Size a test with the holdout test calculator. For the other write-back product, see the DataDoe alternative.
FAQ
- Does Agent Central write to Amazon today?
- Yes. Its homepage says an agent can update bids, campaign states, keywords, prices, inventory, listings, and MCF orders. Every change is previewed first.
- Does Spillmark write to Amazon Ads today?
- No. Ads API write tools are on the roadmap. Add Spillmark as a custom connector in Claude or ChatGPT today for read-only tools.
- Does Agent Central publish a free plan?
- Not in a way we can score yes or no. agentcentral.to/pricing returned 404 on November 6, 2026. The homepage says no credit card is required and does not state a trial length or a permanent $0 plan.