Traktamente (Swedish Travel Expenses)

An MCP server that provides access to Swedish traktamente (per diem) rates from Skatteverket's official API.

Features

• 🔍 Query per diem rates by country, year, or country code
• 🌍 Search across all available countries
• 📊 Access official data from Skatteverket
• ⚡ Fast and lightweight implementation using Bun
• 🔒 Type-safe with Zod schema validation

Installation

pnpm install traktamente-mcp

Or with Bun:

bun add traktamente-mcp

Usage

With Claude Desktop

Add this configuration to your Claude Desktop config file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "traktamente": {
      "command": "npx",
      "args": ["traktamente-mcp"]
    }
  }
}

Restart Claude Desktop, and you'll have access to three new tools:

• get_traktamente - Query per diem rates with filters (country, year, country code)
• get_all_countries - List all available countries
• search_traktamente - Search for countries using regex patterns

With Streamable HTTP (Remote Server)

The server is available as a hosted service at https://traktamente.app/mcp, which you can connect to without installing anything locally.

Claude Code

The easiest way to add the server to Claude Code is using the CLI:

claude mcp add --transport http traktamente https://traktamente.app/mcp

Alternatively, you can manually add it to your Claude Code settings (~/.config/claude/config.json or via UI settings):

{
  "mcpServers": {
    "traktamente": {
      "transport": "http",
      "url": "https://traktamente.app/mcp"
    }
  }
}

Standalone Usage

# Start the server
bun start

# Development mode with hot reload
bun dev

# Test with MCP Inspector (interactive web UI)
bun run inspector

With Docker

The server can run in a Docker container, useful for isolated environments or deployment:

# Build the Docker image
docker build -t traktamente-mcp .

# Run with stdio transport (interactive)
docker run -i traktamente-mcp

# Or use Docker Compose
docker-compose up

Docker with Claude Desktop

To use the Docker container with Claude Desktop, configure it like this:

macOS/Linux: ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "traktamente": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "traktamente-mcp"]
    }
  }
}

Note: You need to build the Docker image first using docker build -t traktamente-mcp . in the project directory.

Available Tools

get_traktamente

Query traktamente rates with optional filters:

• land (string, optional): Country name or regex pattern
• år (string, optional): Year
• landskod (string, optional): Country code (e.g., "US", "GB")
• limit (number, optional): Maximum number of results (default: 100)
• offset (number, optional): Pagination offset (default: 0)

get_all_countries

List all countries with available per diem data. No parameters required.

search_traktamente

Search for countries using a regex pattern:

• search (string, required): Search term or regex pattern
• limit (number, optional): Maximum number of results (default: 50)

Development

Prerequisites

• Bun runtime (v1.0.0 or later)

Setup

# Clone the repository
git clone https://github.com/johnie/traktamente-mcp.git
cd traktamente-mcp

# Install dependencies
bun install

# Start development server
bun dev

Testing with MCP Inspector

The MCP Inspector provides an interactive web UI for testing the server:

bun run inspector

This will open a browser where you can test all available tools and see real-time responses.

Data Source

This server fetches data from Skatteverket's official API:

• API URL: https://skatteverket.entryscape.net/rowstore/dataset/70ccea31-b64c-4bf5-84c7-673f04f32505
• Data: Per diem rates for international travel
• Language: Swedish (country names and field names)

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'feat: add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

Development Guidelines

• Use Bun for all commands (not Node.js or npm)
• Follow the existing code style (enforced by Biome)
• Add tests for new features
• Update documentation as needed

License

MIT © Johnie Hjelm

Support

• Issues: GitHub Issues
• Discussions: GitHub Discussions

Acknowledgments

• Data provided by Skatteverket
• Built with Model Context Protocol SDK
• Powered by Bun