MCP Walmart Ads MCP Server

MCP server for [Walmart Connect Ads APIs](https://developer.walmart.com/advertising-partners) — Sponsored Search and Display.

Local serverstdioPython

What is the MCP Walmart Ads MCP server?

MCP Walmart Ads MCP server is a locally run integration for AI assistants that speak the Model Context Protocol. MCP server for Walmart Connect Ads APIs — Sponsored Search and Display.

What you get

  • Spec-driven discovery — — list/describe endpoints from bundled OpenAPI specs, refreshable at runtime
  • Any endpoint — — call by operation id or raw method+path (raw path reaches unpublished endpoints); no code changes when APIs evolve
  • Supports both Sponsored Search and Display API families
  • Multi-region, multi-environment (production + staging) via config file
  • Per-request RSA-SHA256 signing with automatic header construction
  • Large responses truncated with full data available via MCP resource URI

What the assistant can call

Once MCP Walmart Ads is connected, these are the calls the assistant has available:

  • list_endpoints — List operations from the bundled OpenAPI spec for an ad_type, with optional filters
  • describe_endpoint — Return one operation plus the components.schemas reachable from it (its $ref closure), so request bodies and responses can be built without the full
  • call_endpoint — Execute any Walmart Connect Ads API endpoint. Identify it by operation_id, or by raw method + path. Raw method+path also reaches
  • refresh_specs — Re-fetch the bundled OpenAPI specs from ReadMe's public api-registry into a user cache (~/.cache/mcp-walmart-ads/specs/) that takes precedence over
  • download_display_snapshot — Download a display snapshot file (report or entity). Display snapshot URLs require authenticated requests, so this tool handles the signing
  • Cursor — The Cursor tool exposed by this server
  • Codex — The Codex tool exposed by this server
  • OpenCode — The OpenCode tool exposed by this server

Setting it up

Installation goes through your MCP client rather than a global install: point it at @modelcontextprotocol/inspector on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.

Configuration and credentials

  • Python 3.13+ - Walmart Connect Partner Network credentials (consumer ID, RSA key pair, bearer token)

Choosing this one

This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. MCP Walmart Ads's toolset — list_endpoints, describe_endpoint, call_endpoint and 5 more — is a fair guide to whether it matches your workflow. It is maintained by alyiox; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against MCP Walmart Ads's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Before you rely on it

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • MCP clients confirm each tool call by default. Leave that on until you have watched what the mcp walmart ads mcp server does with a few real requests.

Available tools

ToolWhat it does
list_endpointsList operations from the bundled OpenAPI spec for an ad_type, with optional filters.
describe_endpointReturn one operation plus the components.schemas reachable from it (its $ref closure), so request bodies and responses can be built without the full spec.
call_endpointExecute any Walmart Connect Ads API endpoint. Identify it by operation_id, or by raw method + path. Raw method+path also reaches alpha/beta/unpublished endpoints that are not in the bundled specs. The server handles RSA-
refresh_specsRe-fetch the bundled OpenAPI specs from ReadMe's public api-registry into a user cache (~/.cache/mcp-walmart-ads/specs/) that takes precedence over the bundled copy.
download_display_snapshotDownload a display snapshot file (report or entity). Display snapshot URLs require authenticated requests, so this tool handles the signing automatically. Use the full download URL from the details field after polling a
CursorThe Cursor tool exposed by this server.
CodexThe Codex tool exposed by this server.
OpenCodeThe OpenCode tool exposed by this server.

How to install the MCP Walmart Ads MCP server

{
  "mcpServers": {
    "walmart-ads": {
      "command": "uvx",
      "args": ["mcp-walmart-ads"]
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

  • Python 3.13+ - Walmart Connect Partner Network credentials (consumer ID, RSA key pair, bearer token)

Example prompts to try

  • Use MCP Walmart Ads to list endpoints.
  • Use MCP Walmart Ads to describe endpoint.
  • Use MCP Walmart Ads to call endpoint.

Frequently asked questions

It connects MCP Walmart Ads to MCP-compatible AI assistants such as Claude and Cursor, exposing 8 tools (list_endpoints, describe_endpoint, call_endpoint, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with MCP Walmart Ads directly.