io.github.lukasschwarz/elster-mcp-server

io.github.lukasschwarz/elster-mcp-server·v0.1.0·Browser Automation

Drive the German tax portal ELSTER via Puppeteer: submit UStVA, prepare EUER/ESt, sync inbox.

Trust verdict · v1 advisory · method

NOT YET SCREENEDno verdict on file

Verdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: the eval, four-state verdict, honest limits.

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Environment variables

ELSTER_CONFIG_PATH

Path to a config.json that holds all settings below. Recommended.

ELSTER_PFX_PATH

Absolute path to your ELSTER certificate (.pfx).

ELSTER_PASSWORD

secret

Password for the .pfx certificate.

ELSTER_TAX_NUMBER

Your Steuernummer in the format issued by your Finanzamt.

ELSTER_STATE_CODE

Two-digit ELSTER federal-state code of your Finanzamt.

ELSTER_NAME

Last name / company name.

ELSTER_FIRST_NAME

First name.

ELSTER_STREET

Street.

ELSTER_HOUSE_NUMBER

House number.

ELSTER_ZIP

ZIP code.

ELSTER_CITY

City.

ELSTER_COUNTRY

ISO country code, default DE.

ELSTER_HEADLESS

Run Chromium headless (true/false). Default true.

ELSTER_EST_SKIP_EUR

If 1, skip the EUER pre-hook in ESt sessions.

MCP quality score · maturity, not trust · methodology

freshness

completeness

installability

documentation

stability

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Install

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "elster-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "elster-mcp-server"
      ],
      "env": {
        "ELSTER_CONFIG_PATH": "<elster_config_path>",
        "ELSTER_PFX_PATH": "<elster_pfx_path>",
        "ELSTER_PASSWORD": "<your-elster_password>",
        "ELSTER_TAX_NUMBER": "<elster_tax_number>",
        "ELSTER_STATE_CODE": "<elster_state_code>",
        "ELSTER_NAME": "<elster_name>",
        "ELSTER_FIRST_NAME": "<elster_first_name>",
        "ELSTER_STREET": "<elster_street>",
        "ELSTER_HOUSE_NUMBER": "<elster_house_number>",
        "ELSTER_ZIP": "<elster_zip>",
        "ELSTER_CITY": "<elster_city>",
        "ELSTER_COUNTRY": "<elster_country>",
        "ELSTER_HEADLESS": "<elster_headless>",
        "ELSTER_EST_SKIP_EUR": "<elster_est_skip_eur>"
      }
    }
  }
}

Cursor (.cursor/mcp.json)

{
  "mcpServers": {
    "elster-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "elster-mcp-server"
      ],
      "env": {
        "ELSTER_CONFIG_PATH": "<elster_config_path>",
        "ELSTER_PFX_PATH": "<elster_pfx_path>",
        "ELSTER_PASSWORD": "<your-elster_password>",
        "ELSTER_TAX_NUMBER": "<elster_tax_number>",
        "ELSTER_STATE_CODE": "<elster_state_code>",
        "ELSTER_NAME": "<elster_name>",
        "ELSTER_FIRST_NAME": "<elster_first_name>",
        "ELSTER_STREET": "<elster_street>",
        "ELSTER_HOUSE_NUMBER": "<elster_house_number>",
        "ELSTER_ZIP": "<elster_zip>",
        "ELSTER_CITY": "<elster_city>",
        "ELSTER_COUNTRY": "<elster_country>",
        "ELSTER_HEADLESS": "<elster_headless>",
        "ELSTER_EST_SKIP_EUR": "<elster_est_skip_eur>"
      }
    }
  }
}

Cline (cline_mcp_settings.json)

npx -y elster-mcp-server

Verdict API

curl -s mcpindex.ai/api/v1/trust/server/io-github-lukasschwarz-elster-mcp-server

Free-tier verdict as JSON: decision + dimensions + severity. Call it from your agent before it invokes a tool it just discovered.

Details

version: v0.1.0
category: Browser Automation
quality: 80 / 100
operator: lukasschwarz

Provenance

Verdict history is anchored to Bitcoin via OpenTimestamps. The free tier returns the current verdict only; the anchored record is served on the authenticated tier.

Links

Repository →