How do I use mcp-skatteetaten?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@mcp-skatteetaten get income for person 12345678901 in January 2024" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

mcp-skatteetaten

by bambinobino

Overview Schema Related Servers Score Discussions

TypeScript

Remote

mcp-skatteetaten

A comprehensive Model Context Protocol (MCP) server for Skatteetaten — the Norwegian Tax Administration.

Exposes 35+ tools covering all major Skatteetaten APIs so that LLM agents and AI assistants can query tax data, submit reports, look up population register information, validate VAT returns, and more — all authenticated via Maskinporten.

Covered APIs

API	Description
Inntekt	Employer-reported income (monthly/yearly)
Beregnet Skatt	Calculated tax: trinnskatt, trygdeavgift, fellesskatt
Summert Skattegrunnlag	Aggregated tax basis (income, assets, deductions)
Skattemelding	Tax return retrieval and validation
Restanse	Outstanding tax debts and arrears
Formuesobjekt Fast Eiendom	Property ownership and classification
Formuesgrunnlag Eiendomsskatt	Property value basis for property tax
Folkeregisteret	Population register: lookup, search, event feed
A-Melding	Wage/personnel reporting (replaces Altinn A02)
A-Melding Tilbakemelding	Feedback for submitted A-meldinger
MVA-Melding	VAT return validation
Skattekorttilarbeidsgiver	Tax deduction cards for employers
Krav og Betalinger	Claims and payment history (Fremtidens innkreving)
Tredjepartsopplysninger	Third-party data reporting (banks, brokers, etc.)

Related MCP server: Tripletex MCP Server

Prerequisites

A Norwegian organisation with an organisation number
Access to Maskinporten with a registered client and private key
Rights packages (rettighetspakker) granted by Skatteetaten for the APIs you need
Node.js 20+

Getting Access

Register your Maskinporten client at Samarbeidsportalen
Request the relevant scopes from Skatteetaten at skatteetaten.no/deling
For test environments, use Tenor test data to get synthetic identifiers

Installation

npm install
npm run build

Configuration

Copy .env.example to .env and fill in your credentials:

cp .env.example .env

Variable	Required	Description
`MASKINPORTEN_CLIENT_ID`	Yes	Your Maskinporten client ID
`MASKINPORTEN_PRIVATE_KEY_PATH`	Yes*	Path to your RSA private key PEM file
`MASKINPORTEN_PRIVATE_KEY_JWK`	Yes*	Or provide the JWK as a JSON string
`SKATTEETATEN_ENV`	No	`test` (default) or `production`
`MASKINPORTEN_ISSUER`	No	Override Maskinporten issuer URL
`MASKINPORTEN_TOKEN_ENDPOINT`	No	Override token endpoint URL
`FOLKEREGISTERET_AUTH_PACKAGE`	No	`offentlig-med-hjemmel` (default), `offentlig-uten-hjemmel`, or `privat`

*Either MASKINPORTEN_PRIVATE_KEY_PATH or MASKINPORTEN_PRIVATE_KEY_JWK is required.

Usage

With Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "skatteetaten": {
      "command": "node",
      "args": ["/path/to/mcp-skatteetaten/dist/index.js"],
      "env": {
        "MASKINPORTEN_CLIENT_ID": "your-client-id",
        "MASKINPORTEN_PRIVATE_KEY_PATH": "/path/to/private-key.pem",
        "SKATTEETATEN_ENV": "test"
      }
    }
  }
}

With Claude Code

claude mcp add skatteetaten -- node /path/to/mcp-skatteetaten/dist/index.js

Or run directly:

MASKINPORTEN_CLIENT_ID=... MASKINPORTEN_PRIVATE_KEY_PATH=... npm start

Available Tools

Income (`inntekt`)

Tool	Description
`get_inntekt`	Income for a person in a specific month
`get_inntekt_for_year`	All income across 12 months for a year

Tax (`skatt`)

Tool	Description
`get_beregnet_skatt`	Calculated tax breakdown
`get_summert_skattegrunnlag`	Aggregated tax basis
`get_skattemelding`	Retrieve tax return document
`validate_skattemelding`	Validate a tax return XML
`get_restanse`	Outstanding tax debts

Property (`eiendom`)

Tool	Description
`get_formuesobjekt_fast_eiendom`	Property assets for a person
`get_formuesgrunnlag_eiendomsskatt`	Property value for tax purposes

Population Register (`folkeregisteret`)

Tool	Description
`get_person_folkeregisteret`	Full person record lookup
`search_personer_folkeregisteret`	Search by criteria
`get_folkeregisteret_hendelser`	Change event feed
`get_folkeregisteret_current_sekvens`	Current event feed position

Wage Reporting (`amelding`)

Tool	Description
`submit_amelding`	Submit monthly A-melding
`get_amelding_status`	Check submission status
`get_amelding_tilbakemelding`	Get feedback on submitted report
`list_amelding_for_maaned`	List submissions for a month

VAT (`mva`)

Tool	Description
`validate_mva_melding_xml`	Validate VAT return XML
`validate_mva_melding_json`	Validate VAT return JSON
`get_mva_koder`	List valid VAT codes

Tax Deduction Cards (`skattekort`)

Tool	Description
`get_skattekort`	Get deduction card for an employee
`order_skattekort`	Bulk order deduction cards
`get_skattekort_ordre_status`	Check order status
`get_skattekort_resultat`	Retrieve completed order results

Claims & Payments (`krav-og-betalinger`)

Tool	Description
`get_krav`	Outstanding claims
`get_betalinger`	Payment history

Third-Party Reporting (`tredjepartsopplysninger`)

Tool	Description
`submit_tredjepartsopplysninger`	Submit third-party data
`get_tredjepartsopplysninger_status`	Check submission status
`get_tredjepartsopplysninger_oppgavetyper`	List valid report types

Authentication

All APIs use Maskinporten for server-to-server OAuth2 authentication with enterprise certificates.

The client automatically:

Creates signed JWT grants using your RSA private key
Exchanges them for Maskinporten access tokens
Caches tokens until 30 seconds before expiry
Fetches per-scope tokens (different scopes for different APIs)

Test environment: https://test.maskinporten.no/ Production: https://maskinporten.no/

API Documentation

Development

# Run in development mode
npm run dev

# Type check
npm run typecheck

# Build
npm run build

License

MIT

This server cannot be installed

license - not found

quality - not tested

maintenance

How are these scores calculated?

Maintenance

–Maintainers

–Response time

–Release cycle

–Releases (12mo)

Commit activity

Resources

GitHub Repository

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mcp-skatteetaten

Covered APIs

Prerequisites

Getting Access

Installation

Configuration

Usage

With Claude Desktop

With Claude Code

Available Tools

Income (inntekt)

Tax (skatt)

Property (eiendom)

Population Register (folkeregisteret)

Wage Reporting (amelding)

VAT (mva)

Tax Deduction Cards (skattekort)

Claims & Payments (krav-og-betalinger)

Third-Party Reporting (tredjepartsopplysninger)

Authentication

API Documentation

Development

License

Maintenance

Resources

Looking for Admin?

Latest Blog Posts

MCP directory API

Income (`inntekt`)

Tax (`skatt`)

Property (`eiendom`)

Population Register (`folkeregisteret`)

Wage Reporting (`amelding`)

VAT (`mva`)

Tax Deduction Cards (`skattekort`)

Claims & Payments (`krav-og-betalinger`)

Third-Party Reporting (`tredjepartsopplysninger`)