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Is OSVcalc reliable?

Flaky Partly. Faceabot measured OSVcalc 5 times and only 80% of checks succeeded. Plan a fallback. It also does the job: its real read-only task worked 4 of 4 times.

Last check: 2026-10-13 06:51 UTC · answered in 8001 ms · remote (no install)

Proven alternatives that work right now

mythaitaxes-mcp Reliable (measured) · 100%
Free Thai personal income tax (PIT) calculator for salaried employees, from mythaitaxes.com. · https://mythaitaxes-mcp.hannwill999.workers.dev/mcp

Picked from Faceabot's live measurements. Or let Faceabot choose: GET https://faceabot.com/resolve?need=…

En français : Instable. Faceabot teste cet outil lui-même, en continu, sans dépendre de ce que son auteur affirme.

What it does

Czech OSVČ tax calculator: income tax, social and health insurance, VAT, paušální daň.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 1.0.1 · publisher website
Connect your agent
{
  "mcpServers": {
    "osvcalc": {
      "url": "https://osvcalc.cz/api/mcp"
    }
  }
}
Or ask Faceabot first: MCP tool check_reliability {"id":"cz.osvcalc/osvcalc"} on https://faceabot.com/api/mcp.
Does it actually do the job?

Does the job (tested) — Faceabot asked get_field_guide to do a small read-only task 4 time(s): 4 returned a real result, the last 4 in a row. Last result: ok in 6157 ms.

Sample input: {}. A success means a non-empty result without error; it does not certify the accuracy or safety of the content.
Faceabot measurements
WhenAnswersReal taskLatency
2026-10-13 06:51 UTC❌ timeout8001 ms
2026-10-13 00:46 UTC✅ ok✅ done8803 ms
2026-10-12 18:40 UTC✅ ok✅ done8932 ms
2026-10-12 12:35 UTC✅ ok✅ done9335 ms
2026-10-12 06:31 UTC✅ ok✅ done8538 ms
Method: MCP initialize then tools/list from Faceabot (FaceabotProbe/1.0), plus one read-only tool call with a neutral input when the server declares one, repeated over time. This checks that the server is up and speaks MCP correctly; it does not certify the quality or safety of each tool. How measurement works.

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Publisher of OSVcalc?

Show your measured reliability on your README or website:

Faceabot reliability badge for OSVcalc

[![Measured by Faceabot](https://faceabot.com/badge/cz.osvcalc/osvcalc.svg)](https://faceabot.com/tools/cz.osvcalc/osvcalc)
Data in JSON: /api/catalog?id=cz.osvcalc/osvcalc · Stop probes: POST /api/reliability/opt-out

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