The MCP for marketplace sellers

Every marketplace. One context layer for your agents.

Plug Amazon, Walmart, TikTok Shop, eBay and Shopify into Claude, Cursor, or any MCP-aware agent. Inventory, orders, ads, and reviews — queried in plain English, normalized across every channel.

Trusted by sellers and agencies operating across

amazon Walmart TikTok Shop shopify ebay
Sales last 7d · $48,210
Buy Box won · 94%
Low stock · 3 SKUs
5+
Marketplaces, one schema
80+
Tool primitives ready out of the box
<200ms
Median tool latency to your agent
2 min
From OAuth to first agent reply
Capabilities

Ask the questions you'd ask a great ops manager. Get the answer in seconds.

Every tool returns clean, normalized data — so your agent can reason across channels instead of stitching CSVs.

Inventory & catalog

Live unit counts, location splits, listing health, and parent/child relationships across every channel.

How much inventory do I have of TQR-204?

Sales & analytics

Revenue, units, refunds, and margin by channel, SKU, or date range. Compared the way you'd compare them.

How many sales did I do last month?

Orders & fulfillment

Pending shipments, late orders, delivery exceptions, and FBA/WFS shipment status — all in one place.

Which orders are at risk of late delivery?

Ads & spend

Sponsored Products, TikTok Ads, and Walmart Connect — ACoS, ROAS, and pacing, normalized.

Which campaigns are wasting budget this week?

Reviews & customer voice

Pull reviews, surface common complaints, detect rating drift, and respond at the channel that supports it.

What's driving the 1-star reviews on B0CXP9...?

Pricing & Buy Box

Track Buy Box ownership, competitor pricing, and run repricing actions across channels that allow it.

Where am I losing the Buy Box this week?
Marketplaces

Five channels live today. More every month.

One MCP server, one auth flow, one schema. Switch on a channel without rewriting a single prompt.

Amazon
SP-API · Ads API · Brand
Live
Walmart
Marketplace · WFS · Connect
Live
TikTok Shop
Seller Center · Ads
Live
Shopify
Admin API · Storefront
Live
eBay
Trading API · Sell
Live
Faire
Wholesale
Q3
Etsy
Open API v3
Q3
Mercado Libre
LATAM
Q4
How it works

A single MCP server in front of every seller API.

Drop the server URL into your agent. We handle OAuth, rate limits, retries, schema drift, and pagination.

Your agent
Claude Desktop
Cursor
Custom (TS / Python)

marketplace-mcp

mcp.sellers.dev/sse

Marketplaces
Amazon SP-API
Walmart Marketplace
TikTok Shop API
Coming soon · Private beta

We're onboarding the first 50 sellers and agencies.

Marketplace MCP is in closed beta while we finalize platform certifications across Amazon SP-API, Walmart Marketplace, and TikTok Shop. Join the waitlist to lock in early access and a founding-customer discount.

  • Skip the lineWaitlist sellers get onboarded in the order they signed up — first cohort goes live this quarter.
  • Founding-customer pricingLocked-in discount for life on every channel you connect during beta.
  • Shape the roadmapDirect line to the founders. The marketplaces and tools you need most ship first.
Early access

Get on the waitlist

We'll reach out within 48 hours to schedule a demo and walk through your channels.

By submitting you agree to be contacted about Marketplace MCP. No spam — unsubscribe anytime.

You're on the list. We'll be in touch within 48 hours.
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Use cases

Built for the people running the store.

Whether you sell direct, manage 200 brands, or build agents for your portfolio companies — there's a workflow waiting.

Brands

Stop logging into 5 dashboards

Your weekly review, written by an agent that already pulled the numbers from each channel and flagged what changed.

"Give me a Monday brief: top movers, low stock, ad waste."
Agencies

One agent, every client

Multi-tenant out of the box. Scope a Claude or Cursor agent to a single client account in one line.

"Compare last quarter vs. this quarter for client Acme on Walmart."
Builders

Skip the SP-API tax

You came to ship a product, not maintain 14 marketplace SDKs. Use the MCP, ship the product.

"Build me an inventory chatbot in an afternoon, not a quarter."

Your seller data, in your agent. Soon.

We're onboarding the first cohort now. Get on the list and lock in founding-customer pricing on every channel.