# io.github.grynienM/kalkulatory-place (npm · @kalkulatory-place/mcp)

Polish payroll: gross↔net salary, hourly rates, tax brackets and ZUS rates from a live public API

- Trust score: 80/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- npm · `@kalkulatory-place/mcp`: 80/100 (this document), [markdown](https://verifymcp.io/servers/grynienm-kalkulatory-place/kalkulatory-place-mcp.md), [page](https://verifymcp.io/servers/grynienm-kalkulatory-place/kalkulatory-place-mcp)

## Channel facts

- Registry: `npm`
- Package: `@kalkulatory-place/mcp`
- Version: `1.0.2`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 38 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 753 tokens (~150/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 73/100
  - Stability observed for 22 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the io.github.grynienM/kalkulatory-place MCP server?

io.github.grynienM/kalkulatory-place runs locally as an npm package, launched with npx -y @kalkulatory-place/mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add grynienm-kalkulatory-place -- npx -y @kalkulatory-place/mcp
```

### Cursor

```json
{
  "mcpServers": {
    "grynienm-kalkulatory-place": {
      "command": "npx",
      "args": [
        "-y",
        "@kalkulatory-place/mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "grynienm-kalkulatory-place": {
      "command": "npx",
      "args": [
        "-y",
        "@kalkulatory-place/mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add grynienm-kalkulatory-place -- npx -y @kalkulatory-place/mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "grynienm-kalkulatory-place": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@kalkulatory-place/mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add grynienm-kalkulatory-place --command npx --arg -y --arg @kalkulatory-place/mcp
```

### Hermes

```yaml
mcp_servers:
  grynienm-kalkulatory-place:
    command: "npx"
    args: ["-y", "@kalkulatory-place/mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "grynienm-kalkulatory-place": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@kalkulatory-place/mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add grynienm-kalkulatory-place -t stdio -c npx -a -y @kalkulatory-place/mcp
```

### Other

```json
{
  "mcpServers": {
    "grynienm-kalkulatory-place": {
      "command": "npx",
      "args": [
        "-y",
        "@kalkulatory-place/mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-04 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-31 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-27 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-25 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-22 (score 74, +4)

- [functional improvement] Stability: unverified → 0.27

### 2026-10-19 (score 70, 0)

- [functional regression] Security disclosure: unverified → fail

## MCP tools (5)

### `brutto_na_netto` (~168 tokens)

Ile netto zostaje z podanej kwoty brutto w Polsce: umowa o pracę (z rozbiciem na składki ZUS, zdrowotną i zaliczkę PIT), umowa zlecenie i umowa o dzieło, koszt pracodawcy, ulga dla osób do 26 lat i sumy roczne. Używaj ZAWSZE, zamiast liczyć polski PIT i ZUS samodzielnie.

Input parameters:

- `brutto` (number, required): Miesięczna kwota brutto w złotych.
- `rok` (integer): Rocznik podatkowy. Pominięty = rok bieżący. Podawaj tylko, gdy użytkownik wprost pyta o inny rok.

### `netto_na_brutto` (~148 tokens)

Odwrotność: jakie wynagrodzenie brutto trzeba wpisać w umowie o pracę, żeby na konto wpływała podana kwota netto. Zwraca też, ile dokładnie netto daje to brutto (netto nie jest ciągłą funkcją brutto, bo zaliczka zaokrągla się do pełnych złotych).

Input parameters:

- `netto` (number, required): Oczekiwana miesięczna kwota netto w złotych.
- `rok` (integer): Rocznik podatkowy. Pominięty = rok bieżący. Podawaj tylko, gdy użytkownik wprost pyta o inny rok.

### `stawka_godzinowa` (~144 tokens)

Ile netto wychodzi ze stawki godzinowej brutto — na zleceniu (także z dobrowolną chorobową i dla studenta do 26 lat) oraz na etacie. Zwraca stawkę netto za godzinę i kwotę miesięczną.

Input parameters:

- `rok` (integer): Rocznik podatkowy. Pominięty = rok bieżący. Podawaj tylko, gdy użytkownik wprost pyta o inny rok.
- `stawka` (number, required): Stawka brutto za godzinę w złotych, np. 33 albo 28.61.

### `stawki_roku` (~126 tokens)

Stawki i progi danego rocznika: płaca minimalna (z datami zmian w trakcie roku), minimalna stawka godzinowa, kwota wolna, progi PIT, koszty uzyskania, limit 30-krotności, stopy składek ZUS pracownika i pracodawcy, zdrowotna, PPK. Używaj, zanim zacytujesz którąkolwiek z tych liczb.

Input parameters:

- `rok` (integer, required): Rocznik podatkowy, np. 2026.

### `katalog` (~78 tokens)

Co ten serwis potrafi policzyć: obsługiwane roczniki, zakresy kwot i stawek, wzorce adresów API. Wywołaj, gdy narzędzie zwróci błąd „kwota spoza siatki" albo gdy nie wiesz, który rocznik jest bieżący.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/grynienm-kalkulatory-place/kalkulatory-place-mcp#diagnostics

## Score history

- 2026-11-05: 80
- 2026-11-04: 80
- 2026-11-03: 79
- 2026-11-02: 79
- 2026-11-01: 78
- 2026-10-31: 78
- 2026-10-30: 77
- 2026-10-29: 77
- 2026-10-28: 76
- 2026-10-27: 76
- 2026-10-26: 75
- 2026-10-25: 75
- 2026-10-24: 74
- 2026-10-23: 74
- 2026-10-22: 74
- 2026-10-21: 70
- 2026-10-20: 70
- 2026-10-19: 70
- 2026-10-18: 70
- 2026-10-17: 70
- 2026-10-16: 70
- 2026-10-15: 70
- 2026-10-14: 70
- 2026-10-13: 39
- 2026-10-12: 39
- 2026-10-08: 39

## Common questions

### What is the io.github.grynienM/kalkulatory-place MCP server?

io.github.grynienM/kalkulatory-place is an MCP server listed in the public MCP registry as io.github.grynienM/kalkulatory-place. Polish payroll: gross↔net salary, hourly rates, tax brackets and ZUS rates from a live public API. This page covers its npm package (@kalkulatory-place/mcp).

### Is the io.github.grynienM/kalkulatory-place MCP server safe to use?

io.github.grynienM/kalkulatory-place scores 80 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the io.github.grynienM/kalkulatory-place MCP server expose?

io.github.grynienM/kalkulatory-place exposes 5 tools: brutto_na_netto, netto_na_brutto, stawka_godzinowa, stawki_roku, katalog. Their descriptions and schemas cost roughly 664 tokens of context every time the server is loaded.

### Is the io.github.grynienM/kalkulatory-place MCP server still maintained?

io.github.grynienM/kalkulatory-place is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the io.github.grynienM/kalkulatory-place MCP server under?

io.github.grynienM/kalkulatory-place declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

### What did VerifyMCP test on the io.github.grynienM/kalkulatory-place MCP server?

VerifyMCP ran 16 checks on io.github.grynienM/kalkulatory-place, covering Malware scan, Known CVEs, Install scripts, Dependency health and 12 more. Endpoint Security and Transport & Reachability do not apply to an npm package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- npm package: https://www.npmjs.com/package/@kalkulatory-place/mcp
- Socket report: https://socket.dev/npm/package/@kalkulatory-place/mcp
- Repository: https://github.com/grynienM/kalkulatory-place-mcp
- Changelog RSS feed: https://verifymcp.io/servers/grynienm-kalkulatory-place/kalkulatory-place-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/grynienm-kalkulatory-place/kalkulatory-place-mcp/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/grynienm-kalkulatory-place/kalkulatory-place-mcp.json
- HTML version of this page: https://verifymcp.io/servers/grynienm-kalkulatory-place/kalkulatory-place-mcp