massa MCP

An official MCP server by creating.dev that allows AI assistants to generate valid Brazilian test data (massa de teste) such as CPF, CNPJ, credit cards, and bank accounts. It supports generating CSV, JSON, SQL, or Excel outputs, validating documents, and importing DDL schemas, ensuring digits are mathematically calculated rather than invented.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-19Operated by criando.dev

MCP endpoint (Streamable HTTP)

https://massa.criando.dev/mcp

Vendor documentation

What you can do with it

Generate 10 clients with name, CPF, email, and bank account in CSV
Validate if a specific CNPJ or credit card number is valid
Convert a CREATE TABLE statement into INSERT scripts with test data
Generate 5 Mastercard numbers with validity and CVV for checkout testing

Tools advertised by the last live check:

gerar
gerar_documento
importar_ddl
listar_tipos
validar_documento

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http massa-mcp https://massa.criando.dev/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add massa-mcp --url https://massa.criando.dev/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable massa-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "massa-mcp": {
      "url": "https://massa.criando.dev/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "massa-mcp": {
      "type": "streamableHttp",
      "url": "https://massa.criando.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start massa-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "massa-mcp": {
      "type": "http",
      "url": "https://massa.criando.dev/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http massa-mcp https://massa.criando.dev/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "massa-mcp": {
      "url": "https://massa.criando.dev/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "massa-mcp": {
      "serverUrl": "https://massa.criando.dev/mcp"
    }
  }
}

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