Billy MCP Server

by thourumio.github.Thourum/billy-mcpv0.3.2

Billy (billy.dk) accounting: invoices, journal entries, trial balance, with write protection.

1Node.jsstdioofficial registry

context tax

queued

security

queued

cold start

queued

freshness

Slowing3mo ago

Install Billy MCP server

claude mcp add billy -e BILLY_ACCESS_TOKEN='<billy-access-token>' -- npx -y billy-mcp

{
  "mcpServers": {
    "billy": {
      "command": "npx",
      "args": [
        "-y",
        "billy-mcp"
      ],
      "env": {
        "BILLY_ACCESS_TOKEN": "<billy-access-token>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "billy": {
      "command": "npx",
      "args": [
        "-y",
        "billy-mcp"
      ],
      "env": {
        "BILLY_ACCESS_TOKEN": "<billy-access-token>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "billy": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "billy-mcp"
      ],
      "env": {
        "BILLY_ACCESS_TOKEN": "<billy-access-token>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "billy": {
      "command": "npx",
      "args": [
        "-y",
        "billy-mcp"
      ],
      "env": {
        "BILLY_ACCESS_TOKEN": "<billy-access-token>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
BILLY_ACCESS_TOKEN	yes	yes	Billy API access token (create at mit.billy.dk -> Settings -> Access tokens)
BILLY_WRITE_MODE	—	—	Write protection: read-only, confirm (default, requires elicitation-capable host), or full
BILLY_ORGANIZATION_ID	—	—	Billy organization ID (auto-resolved when the token maps to a single company)
BILLY_LOCALE	—	—	Response language: en_US, da_DK, fr_FR, nl_NL, or de_DE

Freshness

Slowing — last maintenance signal 3mo ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-07-10 · 3mo ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-07-10 · 3mo ago · official registry · v0.3.2

FAQ

›How do I install the Billy MCP server in Claude Code?

Run: claude mcp add billy -e BILLY_ACCESS_TOKEN='<billy-access-token>' -- npx -y billy-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Billy require an API key?

Yes. It expects BILLY_ACCESS_TOKEN, of which 1 is a secret.

›Can I use Billy as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Billy in the official MCP registry?

Yes, as io.github.Thourum/billy-mcp.