Mercado Livre MCP Server: A Model Context Protocol (MCP) server for interacting with the Mercado Livre. Provides tools for fetching product data, such as prices and availability, with a layered architecture and data validation using Zod
Config is the same across clients — only the file and path differ.
{
"mcpServers": {
"mcp-mercado-livre": {
"args": [
"-y",
"npm"
],
"command": "npx"
}
}
}Are you the author?
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This project is part of the Model Context Protocol (MCP) ecosystem and provides tools for integrating with external sources and managing specific domain models. It is designed to demonstrate how to build an MCP server that scrapes products from Mercado Livre, with strong data validation to ensure reliability.
Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.
npx -y 'npm' 2>&1 | head -1 && echo "✓ Server started successfully"
After testing, let us know if it worked:
Five weighted categories — click any category to see the underlying evidence.
Packing does not respect root-level ignore files in workspaces
### Impact `npm pack` ignores root-level `.gitignore` & `.npmignore` file exclusion directives when run in a workspace or with a workspace flag (ie. `--workspaces`, `--workspace=<name>`). Anyone who has run `npm pack` or `npm publish` with workspaces, as of [v7.9.0](https://github.com/npm/cli/releases/tag/v7.9.0) & [v7.13.0](https://github.com/npm/cli/releases/tag/v7.13.0) respectively, may be affected and have published files into the npm registry they did not intend to include. ### Patch - Up
Incorrect Permission Assignment for Critical Resource in NPM
An issue was discovered in an npm 5.7.0 2018-02-21 pre-release (marked as "next: 5.7.0" and therefore automatically installed by an "npm upgrade -g npm" command, and also announced in the vendor's blog without mention of pre-release status). It might allow local users to bypass intended filesystem access restrictions because ownerships of /etc and /usr directories are being changed unexpectedly, related to a "correctMkdir" issue.
Local Privilege Escalation in npm
Affected versions of `npm` use predictable temporary file names during archive unpacking. If an attacker can create a symbolic link at the location of one of these temporary file names, the attacker can arbitrarily write to any file that the user which owns the `npm` process has permission to write to, potentially resulting in local privilege escalation. ## Recommendation Update to version 1.3.3 or later.
npm CLI exposing sensitive information through logs
Versions of the npm CLI prior to 6.14.6 are vulnerable to an information exposure vulnerability through log files. The CLI supports URLs like `<protocol>://[<user>[:<password>]@]<hostname>[:<port>][:][/]<path>`. The password value is not redacted and is printed to stdout and also to any generated log files.
npm Vulnerable to Global node_modules Binary Overwrite
Versions of the npm CLI prior to 6.13.4 are vulnerable to a Global node_modules Binary Overwrite. It fails to prevent existing globally-installed binaries to be overwritten by other package installations. For example, if a package was installed globally and created a `serve` binary, any subsequent installs of packages that also create a `serve` binary would overwrite the first binary. This will not overwrite system binaries but only binaries put into the global node_modules directory. This b
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This project is part of the Model Context Protocol (MCP) ecosystem and provides tools for integrating with external sources and managing specific domain models. It is designed to demonstrate how to build an MCP server that scrapes products from Mercado Livre, with strong data validation to ensure reliability.
| An integration that enables MCP tools to scrape product data, such as prices and availability, directly from Mercado Livre. |
|
fetch (infrastructure layer).The project follows a layered architecture inspired by Domain-Driven Design (DDD) patterns:
Domain (src/domain):
Defines interfaces and types that represent data structures (e.g., Mercado Livre).
Infrastructure (src/infrastructure):
Implements external services, such as MercadoLivreApiService, responsible for making HTTP calls to the Mercado Livre API.
Application (src/application):
Contains business logic in MercadoLivreService, which processes and formats data from the infrastructure.
Interface (src/interface):
Includes controllers (MercadoLivreToolsController) that register tools in the MCP server, define validation schemas, and return results.
Entry Point (src/main.ts):
Initializes the McpServer, configures the transport (StdioServerTransport), instantiates services and controllers, and starts listening on stdio.
The folder structure is as follows:
src/
├── domain/
│ └── models/ # Domain interfaces
├── infrastructure/
│ └── services/ # External API implementations (Mercado Livre)
├── application/
│ └── services/ # Business logic and data formatting
├── interface/
│ └── controllers/ # MCP tool registration and validation
└── main.ts # Server entry point
build/ # Compiled JavaScript code
.vscode/ # Contains the mcp.json file, MCP Server config
git clone git@github.com:newerton/mcp-mercado-livre.git
cd mcp-mercado-livre
npm install
npm run build
Ctrl+Shift+P and select "MCP: List Servers"Ctrl+Shift+P and select "MCP: List Servers"Pull requests are welcome! Feel free to open issues and discuss improvements.
This project is licensed under the MIT license - see the LICENSE file for details.