--- title: "Walmart Marketplace API ยท Hypamoon" description: "The Walmart Marketplace API is open, signs in with OAuth client credentials and sends webhooks. What your AI chat can build with it on Hypamoon, with sources." url: https://hypamoon.com/connect-to/walmart-marketplace --- 1. [Connect to](https://hypamoon.com/connect-to) 2. Walmart Marketplace Product data and marketplaces # Connect Walmart Marketplace to Hypamoon Yes, with one catch. Walmart Marketplace has an open API that you can use yourself, but it signs in with OAuth only, and that takes more work in a Hypamoon adapter today. Open ## The check Three questions about the API of Walmart Marketplace, answered from its own docs. **Public API docs**\ **Yes.** [Read the docs](https://developer.walmart.com/us-marketplace/docs/get-started-as-a-seller) **A key you create yourself**\ **Yes.** An approved seller opens API Key Management from the API Integration page in Seller Center and copies the client ID and secret. [developer.walmart.com](https://developer.walmart.com/us-marketplace/docs/get-started-as-a-seller) **Versions or a changelog**\ **Yes.** Versioned paths such as /v3/ and a dated changelog. [developer.walmart.com](https://developer.walmart.com/us-marketplace/changelog) **How it signs in**\ Client ID and secret from your own seller account, exchanged at /v3/token for an access token sent in the WM\_SEC.ACCESS\_TOKEN header. **Webhooks**\ **Yes.** It can tell your app when something changes. [developer.walmart.com](https://developer.walmart.com/us-marketplace/docs/notifications-overview) **Hosting**\ Cloud **Condition**\ You need an approved Walmart Marketplace seller account. ## Your own Walmart desk, next to your own shop and warehouse. - Orders, items, stock, prices and shipments, straight from the Walmart Marketplace API. - AI that keeps stock and prices on Walmart in line with your own system, with you approving every change. - One screen for your team with Walmart orders next to your other channels. ### Ask your chat Answers straight from your Walmart Marketplace data, in Claude or another chat with the full Hypamoon connection. - Which Walmart orders must ship today? - Which items were unpublished this week, and why? ### When something happens Walmart Marketplace sends a webhook to your app, and the app asks AI what happens next. 1. When A new order is created on Walmart. AI decides AI checks your own stock and decides if the order can ship today. Then Once the parcel leaves, the shipment and tracking number go back to Walmart. Ask for an approval step, and you check it first ### A screen for your team or customers An app on your own address, with sign-in, on top of the same Walmart Marketplace data. - For your team A screen for your team with Walmart orders next to your own webshop orders, sorted by ship date. Walmart Marketplace stays the core: your chat builds the rest on its API, as an adapter plus an app and agents in your Hypamoon project. Reading starts after you click Allow in the portal. Every change an agent or a chat makes in Walmart Marketplace waits for your approval, one call at a time. [How adapters work](https://hypamoon.com/docs/adapters) ### Good to know - Walmart Marketplace signs in with OAuth or signed requests only, with tokens that expire. The Hypamoon vault holds a fixed key today, so an adapter for Walmart Marketplace takes more work: ask your chat to check this first. - You need an approved Walmart Marketplace seller account before you can make keys. ## Try it in your chat Fill in what to read and write, and send it. Say this in your chat > Build the Hypamoon recipe build-an-adapter for Walmart Marketplace. API docs: https://developer.walmart.com/us-marketplace/docs/get-started-as-a-seller. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20Walmart%20Marketplace.%20API%20docs%3A%20https%3A%2F%2Fdeveloper.walmart.com%2Fus-marketplace%2Fdocs%2Fget-started-as-a-seller.%20Read%3A%20%5Bwhat%5D.%20Write%3A%20%5Bwhat%2C%20or%20nothing%5D.) In Claude, or another chat with the full Hypamoon connection; adapters are not in ChatGPT yet. You paste the key in the portal, never in the chat. [The full recipe](https://hypamoon.com/r/build-an-adapter) ## Sources Checked on 7 November 2026. - [developer.walmart.com/us-marketplace/docs/get-started-as-a-seller](https://developer.walmart.com/us-marketplace/docs/get-started-as-a-seller) - [developer.walmart.com/us-marketplace/changelog](https://developer.walmart.com/us-marketplace/changelog) - [developer.walmart.com/us-marketplace/docs/notifications-overview](https://developer.walmart.com/us-marketplace/docs/notifications-overview) Walmart Marketplace is a name of its owner, used here only to describe the software. This page is not an official integration and Hypamoon has no partnership with Walmart Marketplace. Found something that changed? Tell us at [support](https://hypamoon.com/support#contact). ## More in product data and marketplaces - [**Akeneo** Open](https://hypamoon.com/connect-to/akeneo) - [**Amazon Selling Partner API** Possible](https://hypamoon.com/connect-to/amazon-selling-partner-api) - [**Channable** Open](https://hypamoon.com/connect-to/channable) - [**ChannelEngine** Open](https://hypamoon.com/connect-to/channelengine) - [**eBay** Possible](https://hypamoon.com/connect-to/ebay) - [**Etsy** Possible](https://hypamoon.com/connect-to/etsy) - [**Plytix** Open](https://hypamoon.com/connect-to/plytix) - [**Lengow** Open](https://hypamoon.com/connect-to/lengow) - [**BaseLinker** Open](https://hypamoon.com/connect-to/baselinker) - [**Mirakl (seller API)** Open](https://hypamoon.com/connect-to/mirakl) - [**Kaufland Global Marketplace** Open](https://hypamoon.com/connect-to/kaufland) - [**OTTO Market** Possible](https://hypamoon.com/connect-to/otto-market) - [**Allegro** Open](https://hypamoon.com/connect-to/allegro) - [**Google Merchant Center (Merchant API)** Open](https://hypamoon.com/connect-to/google-merchant-center) - [**Salsify** Unknown](https://hypamoon.com/connect-to/salsify) - [**Cloudinary** Open](https://hypamoon.com/connect-to/cloudinary) - [**Productsup** Possible](https://hypamoon.com/connect-to/productsup) - [**Feedonomics** Possible](https://hypamoon.com/connect-to/feedonomics) - [**Zalando (zDirect)** Open](https://hypamoon.com/connect-to/zalando) - [**Cdiscount (Octopia Seller API)** Open](https://hypamoon.com/connect-to/cdiscount) - [**EffectConnect** Open](https://hypamoon.com/connect-to/effect-connect) - [**Tradebyte (TB.One)** Unknown](https://hypamoon.com/connect-to/tradebyte) [All 1094 tools](https://hypamoon.com/connect-to) ## Tool not listed? Ask the chat to check its API. The same three checks work for any software. Your chat reads the vendor's own docs and tells you what it found. Say this in your chat > Check if \[software\] has an open API that a Hypamoon adapter can use: public API docs, a key or token I can create myself without asking the vendor, and versions or a changelog. Link the pages you used. [Open in Claude](https://claude.ai/new?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) [Open in ChatGPT](https://chatgpt.com/?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) Fill in the name of your software. Checking needs no connection to Hypamoon. ## Ready to connect Walmart Marketplace? Connect your chat once, then ask it to build the adapter. [Start free](https://app.hypamoon.com/?mode=signup&utm_source=connect-to&utm_campaign=walmart-marketplace) Works in Claude, ChatGPT and Copilot. [Add to Claude](https://hypamoon.com/connect?via=connect-to~walmart-marketplace#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~walmart-marketplace#chatgpt) [Add to Copilot](https://hypamoon.com/docs/microsoft-copilot)