0n3
MCP servers · eBay · MCP server

Connect Codex CLI to eBay

One line gives Codex CLI your eBay account as tools: 25 endpoints, inventory, orders, account, called with your own connection. No key in the prompt, a receipt for every call, revoke Codex CLI's access alone any time.

Get the line for Codex CLIConnect eBay first

Three steps

  1. Create a free 0n3 account and connect eBay. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into Codex CLI. OpenAI's terminal agent reads 0n3 over Streamable HTTP with a token from your environment.
  3. Ask Codex CLI: whoami. Then: "Inventory items in eBay".
Put the token in your environment
export ON3_TOKEN="<your 0n token>"

Add it to your shell profile so Codex finds it next time.

The line above carries a placeholder; 0n3.app/install mints a real key named for Codex CLI and fills it in.

What Codex CLI can then do in eBay

Inventory · Inventory items keyed by SKU (the listing's product side)11
Inventory itemsGET /sell/inventory/v1/inventory_item
Inventory itemGET /sell/inventory/v1/inventory_item/{sku}
Put inventory itemPUT /sell/inventory/v1/inventory_item/{sku}
Delete an inventory itemDELETE /sell/inventory/v1/inventory_item/{sku}
OffersGET /sell/inventory/v1/offer
OfferGET /sell/inventory/v1/offer/{offerId}
Create an offerPOST /sell/inventory/v1/offer
Update an offerPUT /sell/inventory/v1/offer/{offerId}
Publish an offerPOST /sell/inventory/v1/offer/{offerId}/publish
Withdraw offerPOST /sell/inventory/v1/offer/{offerId}/withdraw
Merchant locationsGET /sell/inventory/v1/location
Orders · Orders and shipping fulfillment3
OrdersGET /sell/fulfillment/v1/order
OrderGET /sell/fulfillment/v1/order/{orderId}
Ship orderPOST /sell/fulfillment/v1/order/{orderId}/shipping_fulfillment
Account · Business policies and the ship-from location an offer needs3
Fulfillment policiesGET /sell/account/v1/fulfillment_policy
Payment policiesGET /sell/account/v1/payment_policy
Return policiesGET /sell/account/v1/return_policy
Browse · Live listings for comps — keyword or a photo3
Browse searchGET /buy/browse/v1/item_summary/search
Browse search imagePOST /buy/browse/v1/item_summary/search_by_image
Browse itemGET /buy/browse/v1/item/{itemId}
Marketing · Promoted Listings campaigns2
CampaignsGET /sell/marketing/v1/ad_campaign
Create a campaignPOST /sell/marketing/v1/ad_campaign
Finances · What eBay paid out and took2
TransactionsGET /sell/finances/v1/transaction
PayoutsGET /sell/finances/v1/payout

All 25 eBay endpoints →

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