Asiento Uno MCP MCP server

Remote MCP server providing access to Spanish commercial registry data (BORME), public subsidies (BDNS), and public contracts (PLACSP). It enables agents to perform due diligence, verify company administrators, check for insolvency proceedings, and retrieve official document links for Spanish entities.

Endpoint and access

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

No sign-inEndpoint checked 2026-10-05Operated by Asiento Uno

MCP endpoint (Streamable HTTP)

https://mcp.asientouno.com/mcp

Vendor documentation

What you can do with it

Verify company identity and current administrators
Check for insolvency or dissolution status
Retrieve public subsidies awarded to a company
List public contracts won by a specific entity

Tools advertised by the last live check:

asientouno_buscar_empresa
asientouno_informe_completo
asientouno_actos_borme
asientouno_cargos_persona
asientouno_riesgo_empresa
asientouno_subvenciones_empresa
asientouno_contratos_empresa
asientouno_cuentas_anuales

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 asiento-uno-mcp https://mcp.asientouno.com/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 asiento-uno-mcp --url https://mcp.asientouno.com/mcp

Cursor

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

Cursor configuration

{
  "mcpServers": {
    "asiento-uno-mcp": {
      "url": "https://mcp.asientouno.com/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": {
    "asiento-uno-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.asientouno.com/mcp",
      "disabled": false
    }
  }
}

VS Code

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

VS Code configuration

{
  "servers": {
    "asiento-uno-mcp": {
      "type": "http",
      "url": "https://mcp.asientouno.com/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 asiento-uno-mcp https://mcp.asientouno.com/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": {
    "asiento-uno-mcp": {
      "url": "https://mcp.asientouno.com/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": {
    "asiento-uno-mcp": {
      "serverUrl": "https://mcp.asientouno.com/mcp"
    }
  }
}

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