Ask for the Amazon work in plain language and get it back done: pull a Sponsored Products report, find why a listing went suppressed, check yesterday's orders, size an Amazon Marketing Cloud (AMC) audience. Answers come from your live Amazon Ads, Seller Central, and Vendor Central data rather than the model's training set, and every action stays scoped to the credentials you grant.
Each Amazon account type connects through its own Kuudo MCP server, added to ChatGPT as its own custom MCP server, and each has a step-by-step guide: Amazon Ads, Seller Central and Vendor Central. The setup below works for any of them in a few minutes, through ChatGPT's Plugins flow with OAuth sign-in.
Your MCP server hostname is private to your deployment. It comes from your cloud provider, belongs to your environment, and is not shared across customers. Replace {your-private-mcp-host} with the private host shown in your dashboard.
Which Amazon accounts can ChatGPT connect to?
Kuudo runs one MCP server per Amazon account type, and each one connects to ChatGPT the same way. Each guide covers that account's authorization, the read-only check that proves the connection, how to pick the profile, marketplace or vendor code, and its own troubleshooting:
- Amazon Ads, through the Amazon Ads MCP: campaigns, bids, budgets, reporting, Amazon DSP (demand-side platform) and Amazon Marketing Cloud. See How to connect Amazon Ads to ChatGPT.
- Seller Central, through the Amazon Selling Partner MCP: listings, inventory, orders, pricing, fulfillment and reports. See How to connect Amazon Seller Central to ChatGPT.
- Vendor Central, through the Amazon Vendor Central MCP: purchase orders, shipments, invoices and Retail Analytics. See How to connect Amazon Vendor Central to ChatGPT.
Repeat the steps below for each server your workspace uses, one custom MCP server each. Amazon's own Seller Assistant plugin names Amazon Quick and Claude, not ChatGPT; see how Kuudo compares.
Prerequisites
- A connected workspace with access to your private MCP server.
- Your MCP server URL from the dashboard. ChatGPT signs in to Kuudo with OAuth, so there is no API key to paste.
- A ChatGPT plan that can add custom MCP servers, used in ChatGPT on the web. OpenAI lists full support, reads and writes, on Business and Enterprise/Edu, and read and fetch only on Pro; its help center does not list Plus. Workspace permissions apply, so an admin may need to allow custom MCP servers. See OpenAI's guide to connecting custom MCP servers.
Add a custom MCP server in ChatGPT
Use this path for ChatGPT on the web. ChatGPT lists custom MCP servers under Plugins; earlier versions of ChatGPT called the same thing an app or a connector.
Copy prompt
Paste this into ChatGPT if you want it to walk you through setup:
Walk me through adding my private MCP server to ChatGPT on the web, step by step.
Use ChatGPT's Plugins flow: select +, then Add custom MCP server, and choose OAuth for authentication.
If my plan or workspace permissions do not allow custom MCP servers, tell me where to check before continuing.
Never ask me to paste an API key into this chat. Authentication happens when I sign in to Kuudo after ChatGPT prompts me.
Keep each step short, tell me what to click, and wait for me after each step.
The MCP server URL will look like:
https://{your-private-mcp-host}/mcp1. Copy your MCP server URL
In your dashboard, copy the endpoint of the server you want to connect:
https://{your-private-mcp-host}/mcpChatGPT signs in to Kuudo with OAuth, so there is no API key to copy or paste.
2. Add the custom MCP server
- In ChatGPT on the web, open Plugins.
- Select +, then Add custom MCP server.
- Name it after the server, such as
amazon-adsoramazon-seller-central. - Paste your MCP server URL and choose OAuth for authentication.
- Save, then sign in to Kuudo when ChatGPT prompts you.
OpenAI's steps for adding a custom MCP server describe the current form.
3. Enable it in a chat
Start a new ChatGPT conversation and add the server from the composer, or mention it by name. ChatGPT asks you to confirm each write action by default: read the tool input it will send before you confirm.
4. Verify the connection
Ask ChatGPT to list the available tools without calling write actions:
What tools are available from my private MCP server?If the server is active, ChatGPT should enumerate the tools exposed by your private MCP server.
Troubleshooting
Add custom MCP server is missing
OpenAI lists custom MCP servers for Pro, Business and Enterprise/Edu on ChatGPT on the web; its help center does not list Plus. On a workspace plan, an admin may also need to allow custom MCP servers.
The MCP server does not meet ChatGPT requirements
ChatGPT may reject an MCP server that does not implement the MCP shape it requires. Confirm that the URL is your server's /mcp endpoint and that the deployment is healthy.
Sign-in fails or returns 401
Reconnect the server from its details page in ChatGPT's settings and sign in to Kuudo again, with an account in the workspace that runs the server. The URL must end with /mcp.
Tools not appearing
Start a new chat after adding the server. Add it from the composer or mention it by name, then ask for the available tools again.
Slow responses
Check your network path to the private host and confirm the cloud deployment is healthy. The hostname is specific to your environment, so connectivity issues are usually tied to your cloud provider, DNS, firewall, or deployment status.
Start using tools
Try read-only prompts first:
- "What tools are available from my private MCP server?"
- "Show me the account or workspace context this server can access."
- "List the read-only tools before calling any write actions."
- "Summarize the last 7 days of available advertising, inventory, or operational data."
For write-capable workflows, ask ChatGPT to explain the proposed action and wait for approval before it calls any mutating tool.
Add reusable workflows
After ChatGPT can reach your MCP server, install ChatGPT skills for repeatable workflows and task-specific instructions. See the ChatGPT Skills quick start.