# otwarteAPI.pl (remote · otwarteapi.pl)

Official public & government APIs, dozens of countries: registers, statistics, open data. Keyless.

- Trust score: 75/100 (medium)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- remote · `otwarteapi.pl`: 75/100 (this document), [markdown](https://verifymcp.io/servers/bartosz-kuc-otwarteapi/otwarteapi.md), [page](https://verifymcp.io/servers/bartosz-kuc-otwarteapi/otwarteapi)

## Channel facts

- Endpoint: `https://otwarteapi.pl/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.1`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, 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 2026-09-20.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 1 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 69/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 395 tokens (~395/item across 1 items; 1 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 93/100
  - Stability observed for 28 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 1 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 2 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the otwarteAPI.pl MCP server?

otwarteAPI.pl is a hosted endpoint at https://otwarteapi.pl/mcp, so there is nothing to install locally. 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 --transport http bartosz-kuc-otwarteapi 'https://otwarteapi.pl/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "bartosz-kuc-otwarteapi": {
      "url": "https://otwarteapi.pl/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "bartosz-kuc-otwarteapi": {
      "type": "http",
      "url": "https://otwarteapi.pl/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.bartosz-kuc-otwarteapi]
url = "https://otwarteapi.pl/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "bartosz-kuc-otwarteapi": {
      "type": "remote",
      "url": "https://otwarteapi.pl/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add bartosz-kuc-otwarteapi --url 'https://otwarteapi.pl/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  bartosz-kuc-otwarteapi:
    url: "https://otwarteapi.pl/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "bartosz-kuc-otwarteapi": {
      "Transport": "http",
      "Url": "https://otwarteapi.pl/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add bartosz-kuc-otwarteapi -t streamable-http -u 'https://otwarteapi.pl/mcp'
```

### Other

```json
{
  "mcpServers": {
    "bartosz-kuc-otwarteapi": {
      "type": "http",
      "url": "https://otwarteapi.pl/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## 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.

### 2026-09-20 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-18 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-16 (score 73, +1)

- [functional] Server version: 1.0.0 → 1.0.1

### 2026-09-14 (score 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-12 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-10 (score 70, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [security] Tool “szukaj_api” rewrote its description, which is the text the model reads
- [cosmetic] “szukaj_api” reworded the description of “limit”

### 2026-09-09 (score 70, +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.

### 2026-09-07 (score 69, +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.

## MCP tools (1)

### `szukaj_api` (~254 tokens)

Przeszukuje otwarteAPI.pl — katalog 92 oficjalnych, publicznych API rządowych z Polski, UE i kilkudziesięciu krajów (rejestry firm, VAT, statystyka, otwarte dane). Zwraca pasujące wpisy z linkiem do oficjalnej dokumentacji, jurysdykcją, typem autoryzacji i formatem. Puste zapytanie zwraca cały katalog (opcjonalnie zawężony filtrami).

Input parameters:

- `limit` (integer): Maksymalna liczba wyników (1–92, domyślnie 8).
- `temat` (string): Tag do zawężenia, np. „firmy”, „dane-statystyczne”, „bez-klucza”. Opcjonalne.
- `zapytanie` (string): Zapytanie w naturalnym języku (PL lub EN), np. „sprawdź VAT firmy w Estonii” albo „company register Germany”. Opcjonalne.
- `zasieg` (string): Kod jurysdykcji do zawężenia, np. PL, EU, DE, GB, US. Opcjonalne.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/bartosz-kuc-otwarteapi/otwarteapi#diagnostics

## Score history

- 2026-09-20: 75
- 2026-09-19: 74
- 2026-09-18: 74
- 2026-09-17: 73
- 2026-09-16: 73
- 2026-09-15: 72
- 2026-09-14: 72
- 2026-09-13: 71
- 2026-09-12: 71
- 2026-09-11: 70
- 2026-09-10: 70
- 2026-09-09: 70
- 2026-09-08: 69
- 2026-09-07: 69
- 2026-09-06: 68
- 2026-09-05: 68
- 2026-09-04: 67
- 2026-09-03: 67
- 2026-09-02: 66
- 2026-09-01: 66
- 2026-08-31: 65
- 2026-08-30: 65
- 2026-08-29: 64
- 2026-08-28: 64
- 2026-08-27: 63
- 2026-08-26: 63
- 2026-08-25: 61
- 2026-08-24: 60
- 2026-08-23: 60

## Common questions

### What is the otwarteAPI.pl MCP server?

otwarteAPI.pl is an MCP server listed in the public MCP registry as io.github.bartosz-kuc/otwarteapi. Official public & government APIs, dozens of countries: registers, statistics, open data. Keyless. This page covers its hosted endpoint (https://otwarteapi.pl/mcp).

### Is the otwarteAPI.pl MCP server safe to use?

otwarteAPI.pl scores 75 out of 100 on VerifyMCP. 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 otwarteAPI.pl MCP server expose?

otwarteAPI.pl exposes 1 tool: szukaj_api. Their descriptions and schemas cost roughly 254 tokens of context every time the server is loaded.

### Does the otwarteAPI.pl MCP server require authentication?

No. We connected to otwarteAPI.pl without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the otwarteAPI.pl MCP server still maintained?

otwarteAPI.pl is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://otwarteapi.pl/mcp
- Repository: https://github.com/bartosz-kuc/otwarteapi-catalog
- Changelog RSS feed: https://verifymcp.io/servers/bartosz-kuc-otwarteapi/otwarteapi.xml
- Changelog JSON feed: https://verifymcp.io/servers/bartosz-kuc-otwarteapi/otwarteapi.json
- HTML version of this page: https://verifymcp.io/servers/bartosz-kuc-otwarteapi/otwarteapi