Finance · Local MCP server

NULA.BG

Bulgarian accounting platform nula.bg: invoices, bills, OCR, customers, inventory and banking.

What the MCP Registry states

The entry as published to the official MCP Registry (read 2026-10-04), latest version.

Registry name
io.github.encorp-io/nulabg-mcp
Version
0.1.0
Status
Active
Category
finance
Transport
stdio (local process)
Package
npm, MCP Bundle (.mcpb)
Published
2026-09-26
Updated
2026-09-26
Publisher
encorp-io (GitHub)
Repository
github.com/encorp-io/nulabg-mcp
Source
Registry API entry

Packages

RegistryPackageVersionTransportEnvironment variables
npmnulabg-mcp0.1.0stdioNULA_API_KEY (required, secret), NULA_READ_ONLY, NULA_PROFILES (secret)
MCP Bundle (.mcpb)https://github.com/encorp-io/nulabg-mcp/releases/download/v0.1.0/nulabg-mcp-0.1.0.mcpbSHA-256 checksum stated0.1.0stdioNone declared

How to connect NULA.BG

NULA.BG runs locally from a Node.js package published to the npm registry: nulabg-mcp version 0.1.0. It speaks MCP over stdio, so the client starts it as a program and talks to it through standard input and output. It needs Node.js; clients usually start it with npx — the usual command is npx -y nulabg-mcp@0.1.0. It reads these environment variables: NULA_API_KEY (required, secret), NULA_READ_ONLY and NULA_PROFILES (secret); set them in the client's configuration for this server.

NULA.BG runs locally from an MCP Bundle: a single downloadable archive holding a local server and a manifest that describes it: https://github.com/encorp-io/nulabg-mcp/releases/download/v0.1.0/nulabg-mcp-0.1.0.mcpb version 0.1.0. It speaks MCP over stdio, so the client starts it as a program and talks to it through standard input and output. It needs a client that installs MCP Bundles; the file is opened in, or added to, that client.

In the mcpServers JSON format that many desktop and editor MCP clients read, the entry looks like this (placeholders in angle brackets):

{
  "mcpServers": {
    "nulabg-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "nulabg-mcp@0.1.0"
      ],
      "env": {
        "NULA_API_KEY": "<secret>",
        "NULA_READ_ONLY": "<value>",
        "NULA_PROFILES": "<secret>"
      }
    }
  }
}

Derived from the registry entry, not tested here. What the server does, and on what terms, is set by its publisher; check its repository or website before giving it access to your accounts or files. How to add an MCP server to an assistant · Before you connect

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