Productivity

freelax.cz

Provides Czech self-employed (OSVČ) tax and insurance calculations, including yearly tax, monthly set-aside, regime comparison, flat tax settlement, and penalty estimation.

1 endpoint14 known toolsFirst detected August 2, 2026Last detected September 2, 2026

ENDPOINT 1

https://freelax.cz/api/mcp

No auth detected

MCP server metadata

Name: freelax-tax-engine
Version: 1.0.0

Capabilities

tools.listChanged

Known tools 14

compute_year

Computes a full Czech OSVČ tax year from personal facts: income tax with credits (children, spouse, deductions), social and health insurance, monthly set-aside, safe-to-spend, flat-tax band and regime-eligibility evaluation.

Inferred read-only

calc_set_aside

How much of a monthly OSVČ income to set aside for Czech income tax, social and health insurance, and what remains safe to spend.

Inferred read-only

compare_regimes

Compares the standard OSVČ regime against paušální daň (flat tax) for a yearly income, including tax credits that would be lost with the flat tax (children, spouse), and recommends the cheaper regime.

Inferred read-only

calc_flat_tax_settlement

Given the paušální daň band you paid and the actual annual income, computes whether you owe a doplatek (top-up), get a vratka (refund), or must exit the flat-tax regime (income above 2,000,000 CZK).

Potential side effects

estimate_penalty

Estimates the Czech penalty/interest for a late payment or filing: repo rate + 8 p.

Potential side effects

convert_eur_czk

Converts an EUR amount to CZK using the Czech National Bank daily exchange rate (the rate used for Czech tax purposes).

Inferred read-only

get_filing_deadlines

Deadline for the Czech personal income tax return (DPFO) for a given tax year, per filing route: paper, self-filed electronic, or via tax advisor.

Inferred read-only

get_prehled_deadlines

Filing deadlines for the annual OSVČ Přehled o příjmech a výdajích for both social insurance (ČSSZ) and the health insurer, per tax-return filing route, plus the payment due date (8 calendar days after the filing deadline).

Potential side effects

czech_working_days

Czech public holidays for a year (including movable Easter feasts) and, for a specific date, whether it is a working day and the next working day a statutory deadline would shift to.

Inferred read-only

check_flat_tax_eligibility

Screens whether an OSVČ may enter or stay in the paušální daň (flat tax) regime: public health insurance participation (decisive for foreigners), VAT-payer status, income ceiling 2,000,000 CZK, side income and secondary activity.

Inferred read-only

get_flat_tax_band

Which paušální daň band (pásmo 1/2/3) an annual income falls into given the expense flat-rate, the current monthly payment for that band, and the next income threshold to watch.

Potential side effects

check_thresholds

Checks an annual income against the four statutory thresholds: VAT registration 2,000,000 CZK, immediate VAT registration 2,536,500 CZK, the 23% higher tax bracket, and the paušální daň eligibility ceiling.

Inferred read-only

check_io_trigger

Checks whether buying services from abroad (Google Ads, Meta, ChatGPT, hosting…) or selling services to EU businesses has made an OSVČ an identifikovaná osoba under § 6h/§ 6i ZDPH, with the 15-day registration deadline (§ 97) and fact-freshness handling.

Inferred read-only

get_rule_source

For a Czech OSVČ tax topic, returns the governing rule with current values, primary-source citations (zákon, ČSSZ, VZP, Finanční správa) with verification dates, and related Freelax articles.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.freelax-tax-engine]
url = "https://freelax.cz/api/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "freelax-tax-engine": {
      "type": "http",
      "url": "https://freelax.cz/api/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: freelax-tax-engine
Remote MCP URL: https://freelax.cz/api/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "freelax-tax-engine": {
      "url": "https://freelax.cz/api/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "freelax-tax-engine": {
      "type": "http",
      "url": "https://freelax.cz/api/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "freelax-tax-engine",
  "transport": "streamable-http",
  "url": "https://freelax.cz/api/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Trust Data Available

BuiltWith Trust API v2 evidence for freelax.cz was fetched 2026-08-10T23:51:30.385Z.

Trust status Neutral

freelax.cz is assessed as Neutral: No suspicious signals found, but no strong positive signal either

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.